Property:Phenology

Text

previous 5002050100250500next 500
Showing 500 pages using this property.
A
Aristolochia erecta +
Flowering late spring–summer.  +
Aristolochia macrophylla +
Flowering late spring–summer.  +
Aristolochia maxima +
Flowering all year.  +
Aristolochia pentandra +
Flowering winter–early spring.  +
Aristolochia reticulata +
Flowering late spring–summer.  +
Aristolochia serpentaria +
Flowering late spring–summer.  +
Aristolochia tomentosa +
Flowering late spring–summer.  +
Aristolochia watsonii +
Flowering spring–summer.  +
Aristolochia wrightii +
Flowering all year.  +
Arivela viscosa +
Flowering summer.  +
Armeria maritima subsp. californica +
Flowering mid spring-mid summer.  +
Armeria maritima subsp. interior +
Flowering summer.  +
Armeria maritima subsp. maritima +
Flowering late spring–early summer.  +
Armeria maritima subsp. sibirica +
Flowering summer.  +
Armoracia rusticana +
Flowering Mar–Jul.  +
Arnica acaulis +
Flowering Apr–Jun.  +
Arnica angustifolia subsp. angustifolia +
Flowering May–Sep.  +
Arnica angustifolia subsp. tomentosa +
Flowering Jul–Aug.  +
Arnica cernua +
Flowering Apr–Jun.  +
Arnica chamissonis +
Flowering Apr–Sep.  +
Arnica cordifolia +
Flowering May–Jul.  +
Arnica dealbata +
Flowering Jun–Aug.  +
Arnica discoidea +
Flowering May–Jul.  +
Arnica fulgens +
Flowering May–Jul.  +
Arnica gracilis +
Flowering Jul–Aug.  +
Arnica griscomii subsp. frigida +
Flowering Jul–Aug.  +
Arnica griscomii subsp. griscomii +
Flowering Jun–Jul.  +
Arnica lanceolata subsp. lanceolata +
Flowering Jun–Sep.  +
Arnica lanceolata subsp. prima +
Flowering May–Sep.  +
Arnica latifolia +
Flowering Jul–Aug.  +
Arnica lessingii +
Flowering Jun–Sep.  +
Arnica lonchophylla +
Flowering June–Aug.  +
Arnica longifolia +
Flowering Jun–Oct.  +
Arnica louiseana +
Flowering Jul–Aug.  +
Arnica mollis +
Flowering Jun–Sep.  +
Arnica nevadensis +
Flowering Jul–Aug.  +
Arnica ovata +
Flowering Jul–Sep.  +
Arnica parryi +
Flowering May–Sep.  +
Arnica rydbergii +
Flowering Jul–Aug.  +
Arnica sororia +
Flowering May–Jul.  +
Arnica spathulata +
Flowering Apr–Jul.  +
Arnica unalaschcensis +
Flowering Jun–Aug.  +
Arnica venosa +
Flowering May–Jun.  +
Arnica viscosa +
Flowering Aug–Sep.  +
Arnoglossum album +
Flowering May–mid July.  +
Arnoglossum atriplicifolium +
Flowering Jul–Nov.  +
Arnoglossum diversifolium +
Flowering mid May–early Jul (Aug–Sep, peninsular Florida).  +
Arnoglossum floridanum +
Flowering May–Jul.  +
Arnoglossum ovatum +
Flowering (May–)Aug–Oct(–Dec).  +
Arnoglossum plantagineum +
Flowering May (south)–Aug (north).  +
Arnoglossum reniforme +
Flowering mid May–early Sep.  +
Arnoglossum sulcatum +
Flowering Sep–Nov.  +
Arnoseris minima +
Flowering Jun–Sep.  +
Aronia arbutifolia +
Flowering Feb–May  +, fruiting Sep–Nov.  +
Aronia melanocarpa +
Flowering Mar–Jun  +, fruiting Sep–Nov.  +
Artemisia abrotanum +
Flowering late summer–fall.  +
Artemisia absinthium +
Flowering mid summer–fall.  +
Artemisia alaskana +
Flowering early–late summer.  +
Artemisia aleutica +
Flowering mid–late summer.  +
Artemisia annua +
Flowering late summer–fall.  +
Artemisia arbuscula subsp. arbuscula +
Flowering mid–late summer.  +
Artemisia arbuscula subsp. longiloba +
Flowering early–late spring.  +
Artemisia arbuscula subsp. thermopola +
Flowering mid–late summer.  +
Artemisia biennis +
Flowering mid summer–late fall.  +
Artemisia bigelovii +
Flowering early summer–late fall.  +
Artemisia borealis subsp. borealis +
Flowering mid–late summer.  +
Artemisia borealis subsp. richardsoniana +
Flowering mid–late summer.  +
Artemisia californica +
Flowering early–late summer.  +
Artemisia campestris subsp. canadensis +
Flowering early–late summer.  +
Artemisia campestris subsp. caudata +
Flowering early–late summer.  +
Artemisia campestris subsp. pacifica +
Flowering mid–late summer.  +
Artemisia cana subsp. bolanderi +
Flowering mid–late summer.  +
Artemisia cana subsp. cana +
Flowering mid–late summer.  +
Artemisia cana subsp. viscidula +
Flowering mid–late summer.  +
Artemisia carruthii +
Flowering mid summer–early fall.  +
Artemisia douglasiana +
Flowering mid spring–late fall.  +
Artemisia dracunculus +
Flowering mid summer–late fall.  +
Artemisia filifolia +
Flowering late summer–early winter.  +
Artemisia franserioides +
Flowering late summer–early fall.  +
Artemisia frigida +
Flowering summer–fall.  +
Artemisia furcata +
Flowering late summer.  +
Artemisia globularia subsp. globularia +
Flowering late summer.  +
Artemisia globularia subsp. lutea +
Flowering late spring–mid summer.  +
Artemisia glomerata +
Flowering mid summer.  +
Artemisia laciniata subsp. laciniata +
Flowering mid–late summer.  +
Artemisia laciniata subsp. parryi +
Flowering late summer–fall.  +
Artemisia longifolia +
Flowering mid summer–early fall.  +
Artemisia ludoviciana subsp. albula +
Flowering early summer–fall.  +
Artemisia ludoviciana subsp. candicans +
Flowering mid–late summer.  +
Artemisia ludoviciana subsp. incompta +
Flowering mid summer–late fall.  +
Artemisia ludoviciana subsp. ludoviciana +
Flowering mid summer–late fall.  +
Artemisia ludoviciana subsp. mexicana +
Flowering late summer–late fall.  +
Artemisia ludoviciana subsp. redolens +
Flowering mid–late summer.  +
Artemisia michauxiana +
Flowering mid summer–early fall.  +
Artemisia nesiotica +
Flowering mid–late summer.  +
Artemisia norvegica subsp. saxatilis +
Flowering mid–late summer.  +
Artemisia nova +
Flowering mid summer–late fall.  +
Artemisia packardiae +
Flowering late summer.  +
Artemisia palmeri +
Flowering early–mid summer.  +
Artemisia papposa +
Flowering early spring–mid summer.  +
Artemisia pattersonii +
Flowering mid–late summer.  +
Artemisia pedatifida +
Flowering early spring–mid summer.  +
Artemisia pontica +
Flowering late summer–fall.  +
Artemisia porteri +
Flowering mid–late summer.  +
Artemisia pycnocephala +
Flowering late spring–mid summer.  +
Artemisia pygmaea +
Flowering mid summer–fall.  +
Artemisia rigida +
Flowering mid summer–early fall.  +
Artemisia rothrockii +
Flowering mid summer–all.  +
Artemisia rupestris +
Flowering late summer–fall.  +
Artemisia scopulorum +
Flowering mid–late summer.  +
Artemisia senjavinensis +
Flowering mid–late summer.  +
Artemisia serrata +
Flowering mid summer–early fall.  +
Artemisia spiciformis +
Flowering mid summer–fall.  +
Artemisia stelleriana +
Flowering early spring–fall.  +
Artemisia suksdorfii +
Flowering mid summer–fall.  +
Artemisia tilesii +
Flowering mid summer–early fall.  +
Artemisia tridentata subsp. parishii +
Flowering mid summer–late fall.  +
Artemisia tridentata subsp. tridentata +
Flowering mid summer–late fall.  +
Artemisia tridentata subsp. vaseyana +
Flowering mid summer–late fall.  +
Artemisia tridentata subsp. wyomingensis +
Flowering mid summer–late fall.  +
Artemisia tripartita subsp. rupicola +
Flowering early–late summer.  +
Artemisia tripartita subsp. tripartita +
Flowering mid summer–late fall.  +
Artemisia vulgaris +
Flowering mid summer–late fall.  +
Arthrocnemum subterminale +
Flowering late spring–late summer.  +
Aruncus dioicus var. acuminatus +
Flowering early summer.  +
Aruncus dioicus var. dioicus +
Flowering early summer.  +
Aruncus dioicus var. pubescens +
Flowering early summer.  +
Aruncus dioicus var. vulgaris +
Flowering summer.  +
Asanthus squamulosus +
Flowering Apr–May.  +
Asarum canadense +
Flowering spring–early summer (Mar–Jul).  +
Asarum caudatum +
Flowering spring–summer (Apr–Jul).  +
Asarum hartwegii +
Flowering spring–summer (Apr–Jul).  +
Asarum lemmonii +
Flowering spring–summer (May–Jul).  +
Asarum marmoratum +
Flowering late winter–spring (Mar–Jun).  +
Asarum wagneri +
Flowering spring–summer (May–Jul).  +
Aschisma kansanum +
Capsules mature Apr.  +
Asemeia grandiflora +
Flowering spring–summer (year-round).  +
Asimina incana +
Flowering spring–early summer.  +
Asimina longifolia var. longifolia +
Flowering spring–early summer, all year if disturbed.  +
Asimina longifolia var. spatulata +
Flowering spring–early summer(-fall).  +
Asimina obovata +
Flowering late winter–early summer.  +
Asimina parviflora +
Flowering early spring.  +
Asimina pygmaea +
Flowering spring–early summer.  +
Asimina reticulata +
Flowering winter–spring.  +
Asimina tetramera +
Flowering spring–summer, all year if disturbed.  +
Asimina triloba +
Flowering early spring.  +
Asparagus aethiopicus +
Flowering spring–summer.  +
Asparagus asparagoides +
Flowering spring–summer.  +
Asparagus officinalis +
Flowering summer.  +
Asparagus setaceus +
Flowering spring–summer.  +
Asphodelus fistulosus +
Flowering late winter–spring.  +
Aspicarpa hirtella +
Flowering and fruiting (May–)Jul–Sep(–Oct).  +
Aspicarpa hyssopifolia +
Flowering and fruiting Apr–Nov.  +
Aster alpinus subsp. vierhapperi +
Flowering early summer.  +
Aster tataricus +
Flowering fall.  +
Astilbe biternata +
Flowering Jun.  +
Astraea lobata +
Flowering Jun–Nov.  +
Astranthium ciliatum +
Flowering Mar–May.  +
Astranthium integrifolium +
Flowering Apr–Jun(–Jul).  +
Astranthium robustum +
Flowering Mar–Jun.  +
Astrolepis cochisensis subsp. arizonica +
Sporulating summer–fall.  +
Astrolepis cochisensis subsp. chihuahuensis +
Sporulating summer–fall.  +
Astrolepis cochisensis subsp. cochisensis +
Sporulating summer–fall.  +
Astrolepis integerrima +
Sporulating summer–fall.  +
Astrolepis sinuata subsp. mexicana +
Sporulating summer–fall.  +
Astrolepis sinuata subsp. sinuata +
Sporulating summer–fall.  +
Astrolepis windhamii +
Sporulating summer–fall.  +
Astrophytum asterias +
Flowering Mar–May and sporadically after summer rainfall.  +
Atamisquea emarginata +
Flowering early summer.  +
Athysanus pusillus +
Flowering Feb–Jun.  +
Athysanus unilateralis +
Flowering Feb–May.  +
Atrichoseris platyphylla +
Flowering Feb–May.  +
Atrichum altecristatum +
Capsules mature spring–fall (Mar–Oct).  +
Atrichum angustatum +
Capsules mature spring–summer (Apr–Jul).  +
Atrichum crispulum +
Capsules mature summer (Jun–Aug).  +
Atrichum crispum +
Capsules mature spring–summer (Apr–June).  +
Atrichum flavisetum +
Capsule maturity date not determined.  +
Atrichum selwynii +
Capsules mature spring–late summer (Mar–Sept).  +
Atrichum tenellum +
Capsules mature late summer (Aug–Sep).  +
Atrichum undulatum +
Capsules mature spring–summer (Apr- Jul).  +
Atriplex amnicola +
Flowering summer–fall.  +
Atriplex argentea var. argentea +
Flowering summer–fall.  +
Atriplex argentea var. hillmanii +
Flowering summer–fall.  +
Atriplex argentea var. longitrichoma +
Flowering summer–fall.  +
Atriplex argentea var. mohavensis +
Flowering summer–fall.  +
Atriplex argentea var. rydbergii +
Flowering summer–fall.  +
Atriplex californica +
Flowering Apr–Nov.  +
Atriplex canescens var. canescens +
Flowering spring–fall.  +
Atriplex canescens var. gigantea +
Flowering summer–fall.  +
Atriplex canescens var. laciniata +
Flowering spring–fall.  +
Atriplex canescens var. macilenta +
Flowering spring–fall.  +
Atriplex confertifolia +
Flowering spring–fall.  +
Atriplex cordulata var. cordulata +
Flowering spring–fall.  +
Atriplex cordulata var. erecticaulis +
Flowering summer–early fall.  +
Atriplex coronata var. coronata +
Flowering spring–fall.  +
Atriplex coronata var. notatior +
Flowering spring–fall.  +
Atriplex coronata var. vallicola +
Flowering spring–fall.  +
Atriplex corrugata +
Flowering spring–fall.  +
Atriplex coulteri +
Flowering spring–fall.  +
Atriplex covillei +
Flowering summer–fall.  +
Atriplex dioica +
Flowering summer–fall.  +
Atriplex elegans var. elegans +
Flowering spring–fall.  +
Atriplex elegans var. fasciculata +
Flowering spring–fall.  +
Atriplex fruticulosa +
Flowering summer–fall.  +
Atriplex gardneri var. aptera +
Flowering summer–fall.  +
Atriplex gardneri var. bonnevillensis +
Flowering summer–fall.  +
Atriplex gardneri var. cuneata +
Flowering spring–fall.  +
Atriplex gardneri var. falcata +
Flowering summer–fall.  +
Atriplex gardneri var. gardneri +
Flowering spring–fall.  +
Atriplex gardneri var. utahensis +
Flowering summer–fall.  +
Atriplex gardneri var. welshii +
Flowering spring–fall.  +
Atriplex garrettii var. garrettii +
Flowering spring–fall.  +
Atriplex garrettii var. navajoensis +
Flowering summer–fall.  +
Atriplex glabriuscula var. acadiensis +
Flowering late summer–fall.  +
Atriplex glabriuscula var. franktonii +
Flowering late summer–fall.  +
Atriplex glabriuscula var. glabriuscula +
Flowering late summer.  +
Atriplex gmelinii var. alaskensis +
Flowering summer.  +
Atriplex gmelinii var. gmelinii +
Flowering summer.  +
Atriplex graciliflora +
Flowering summer.  +
Atriplex heterosperma +
Flowering summer–fall.  +
Atriplex holocarpa +
Flowering summer.  +
Atriplex hortensis +
Flowering summer–fall.  +
Atriplex hymenelytra +
Flowering spring.  +
Atriplex joaquiniana +
Flowering summer.  +
Atriplex klebergorum +
Flowering summer.  +
Atriplex laciniata +
Flowering summer–fall.  +
Atriplex lentiformis +
Flowering spring–fall.  +
Atriplex leucophylla +
Flowering spring–fall.  +
Atriplex linearis +
Flowering spring–fall.  +
Atriplex littoralis +
Flowering summer.  +
Atriplex matamorensis +
Flowering summer and fall.  +
Atriplex mucronata +
Flowering summer–fall.  +
Atriplex nudicaulis +
Flowering late summer–fall.  +
Atriplex nummularia +
Flowering summer–fall.  +
Atriplex oblongifolia +
Flowering summer.  +
Atriplex obovata +
Flowering summer–fall.  +
Atriplex pacifica +
Flowering early spring–fall.  +
Atriplex parishii var. depressa +
Flowering late summer–fall.  +
Atriplex parishii var. minuscula +
Flowering late summer–fall.  +
Atriplex parishii var. parishii +
Flowering late summer–fall.  +
Atriplex parishii var. persistens +
Flowering spring–fall.  +
Atriplex parishii var. subtilis +
Flowering late spring–fall.  +
Atriplex parryi +
Flowering spring–fall.  +
Atriplex patula +
Flowering summer–fall.  +
Atriplex pentandra +
Flowering summer–fall.  +
Atriplex phyllostegia +
Flowering Apr–Aug.  +
Atriplex pleiantha +
Flowering late summer–fall.  +
Atriplex polycarpa +
Flowering spring–fall.  +
Atriplex powellii var. minuticarpa +
Flowering spring–fall.  +
Atriplex powellii var. powellii +
Flowering summer–fall.  +
Atriplex prostrata +
Flowering in summer–fall.  +
Atriplex pusilla +
Flowering Jun–Oct.  +
Atriplex rosea +
Flowering mid summer–fall.  +
Atriplex saccaria var. asterocarpa +
Flowering Apr–Sep.  +
Atriplex saccaria var. cornuta +
Flowering late summer–fall.  +
Atriplex semibaccata +
Flowering spring–early winter.  +
Atriplex serenana var. davidsonii +
Flowering spring–fall.  +
Atriplex serenana var. serenana +
Flowering spring–fall.  +
Atriplex spinifera +
Flowering summer–fall.  +
Atriplex suberecta +
Flowering summer–fall.  +
Atriplex suckleyi +
Flowering late summer–fall.  +
Atriplex tatarica +
Flowering late summer–fall.  +
Atriplex torreyi var. griffithsii +
Flowering spring–winter.  +
Atriplex torreyi var. torreyi +
Flowering spring–fall.  +
Atriplex truncata +
Flowering summer–fall.  +
Atriplex tularensis +
Flowering summer–fall.  +
Atriplex watsonii +
Flowering spring–fall.  +
Atriplex wolfii var. tenuissima +
Flowering summer–fall.  +
Atriplex wolfii var. wolfii +
Flowering summer–fall.  +
Atriplex wrightii +
Flowering summer–fall.  +
Aubrieta deltoidea +
Flowering Apr–Jun.  +
Aucuba japonica +
Flowering Mar–Apr.  +
Aureolaria flava +
Flowering Jul–Oct.  +
Aureolaria grandiflora +
Flowering Jul–Oct.  +
Aureolaria levigata +
Flowering Jul–Oct.  +
Aureolaria patula +
Flowering Aug–Oct.  +
Aureolaria pectinata +
Flowering Jun–Sep.  +
Aureolaria pedicularia +
Flowering Jun–Sep.  +
Aureolaria virginica +
Flowering Jun–Sep.  +
Aurinia petraea +
Flowering May–Jul.  +
Aurinia saxatilis +
Flowering May–Jul.  +
Axyris amaranthoides +
Flowering summer–fall.  +
Ayenia compacta +
Flowering and fruiting spring–early fall.  +
Ayenia euphrasiifolia +
Flowering and fruiting year-round.  +
Ayenia filiformis +
Flowering and fruiting spring–early fall.  +
Ayenia jaliscana +
Flowering and fruiting late summer–early winter.  +
Ayenia limitaris +
Flowering summer  +, fruiting summer–fall.  +
Ayenia microphylla +
Flowering and fruiting spring–early fall.  +
Ayenia pilosa +
Flowering and fruiting year-round.  +
B
Baccharis angustifolia +
Flowering Sep–Nov.  +
Baccharis bigelovii +
Flowering Aug–Nov.  +
Baccharis brachyphylla +
Flowering Jul–Aug.  +
Baccharis dioica +
Flowering Aug–Nov.  +
Baccharis glomeruliflora +
Flowering Oct–Nov.  +
Baccharis glutinosa +
Flowering Jul–Oct (all year).  +
Baccharis halimifolia +
Flowering Aug–Nov.  +
Baccharis havardii +
Flowering Jul–Sep.  +
Baccharis malibuensis +
Flowering Aug–Sep.  +
Baccharis neglecta +
Flowering Aug–Nov.  +
Baccharis pilularis subsp. consanguinea +
Flowering Jul–Dec.  +
Baccharis pilularis subsp. pilularis +
Flowering Jul–Dec.  +
Baccharis plummerae subsp. glabrata +
Flowering Jun–Nov.  +
Baccharis plummerae subsp. plummerae +
Flowering (May–)Aug–Nov.  +
Baccharis pteronioides +
Flowering Apr–Jun.  +
Baccharis salicifolia +
Flowering (Jan–)Mar–Oct.  +
Baccharis salicina +
Flowering May–Nov.  +
Baccharis sarothroides +
Flowering Aug–Nov.  +
Baccharis sergiloides +
Flowering Jul–Oct.  +
Baccharis texana +
Flowering Aug–Nov.  +
Baccharis thesioides +
Flowering Aug–Nov.  +
Baccharis vanessae +
Flowering Oct.  +
Baccharis wrightii +
Flowering Apr–Jul.  +
Bacopa caroliniana +
Flowering Jun–Nov.  +
Bacopa egensis +
Flowering Aug–Oct.  +
Bacopa eisenii +
Flowering May–Oct.  +
Bacopa innominata +
Flowering Jun–Sep.  +
Bacopa monnieri +
Flowering Apr–Sep.  +
Bacopa repens +
Flowering Jul–Sep.  +
Bacopa rotundifolia +
Flowering May–Nov.  +
Bahia absinthifolia +
Flowering Mar–Nov.  +
Bahia bigelovii +
Flowering Jun–Oct.  +
Bahia biternata +
Flowering (May–)Sep–Oct.  +
Bahia pedata +
Flowering (May–)Jul–Aug(–Nov).  +
Bahiopsis laciniata +
Flowering Jan–Jun(–Sep).  +
Bahiopsis parishii +
Flowering (Jan–Oct).  +
Bahiopsis reticulata +
Flowering Mar–Jun.  +
Baileya multiradiata +
Flowering Mar–Nov (depending on rains).  +
Baileya pauciradiata +
Flowering Mar–May.  +
Baileya pleniradiata +
Flowering Mar–Nov (depending on rains).  +
Balduina angustifolia +
Flowering summer–fall (year round south).  +
Balduina atropurpurea +
Flowering summer–fall.  +
Balduina uniflora +
Flowering summer–fall.  +
Balsamorhiza careyana +
Flowering (Mar–)May–Jun(–Jul).  +
Balsamorhiza deltoidea +
Flowering (Mar–)Apr–Jun(–Jul).  +
Balsamorhiza hispidula +
Flowering Apr–May.  +
Balsamorhiza hookeri +
Flowering Apr–May(–Jul).  +
Balsamorhiza incana +
Flowering May–Jun(–Jul).  +
Balsamorhiza lanata +
Flowering Apr–May(–Jun).  +
Balsamorhiza macrolepis +
Flowering Apr–Jun.  +
Balsamorhiza macrophylla +
Flowering May–Jul.  +
Balsamorhiza rosea +
Flowering Apr–May.  +
Balsamorhiza sagittata +
Flowering (Apr–)May–Jun(–Jul).  +
Balsamorhiza sericea +
Flowering Apr–May.  +
Balsamorhiza serrata +
Flowering Apr–Jun.  +
Barbarea orthoceras +
Flowering Mar–Jul.  +
Barbarea stricta +
Flowering Apr–Jul.  +
Barbarea verna +
Flowering Mar–Jul.  +
Barbarea vulgaris +
Flowering Apr–Jul.  +
Barbella pendula +
Capsules mature Mar.  +
Barbula convoluta var. convoluta +
Capsules mature spring–summer (Mar–Aug, Jun).  +
Barbula convoluta var. eustegia +
Capsules mature late spring, summer–fall (May, Jun, Jul, Oct).  +
Barbula unguiculata +
Capsules mature in winter and early spring, occasionally summer or fall.  +
Barkleyanthus salicifolius +
Flowering year-round, mostly spring.  +
Bartlettia scaposa +
Flowering summer–fall, following rains.  +
Bartramia brevifolia +
Capsules mature Nov.  +
Bartramia halleriana +
Spores 15-24 µm, mature Jun–Sep.  +
Bartramia ithyphylla +
Capsules mature Jul–Nov.  +
Bartramia pomiformis +
Capsules mature Feb–Nov.  +
Bartramia stricta +
Capsules mature Jan–Aug.  +
Bartramia subulata +
Capsules mature Aug–Nov.  +
Bartsia alpina +
Flowering Jun–Aug.  +
Basiphyllaea corallicola +
Flowering Sep–Nov.  +
Bassia hirsuta +
Flowering late summer–fall.  +
Bassia hyssopifolia +
Flowering late summer–fall.  +
Bastardia viscosa +
Flowering year-round.  +
Batesimalva violacea +
Flowering fall.  +
Batis maritima +
Flowering (Jan-)Apr–Sep [year-round in the tropics].  +
Bebbia juncea var. aspera +
Flowering mostly year round.  +
Begonia cucullata +
Flowering spring.  +
Begonia hirtella +
Flowering spring.  +
Bejaria racemosa +
Flowering spring.  +
Belamcanda chinensis +
Flowering Jun–Aug.  +
Bellardia latifolia +
Flowering Apr–May.  +
Bellardia trixago +
Flowering Mar–Jun.  +
Bellardia viscosa +
Flowering Apr–Sep.  +
Bellis perennis +
Flowering spring–summer.  +
Beloglottis costaricensis +
Flowering Mar–Apr.  +
Benitoa occidentalis +
Flowering Jun–Nov.  +
Bensoniella oregona +
Flowering May–Aug.  +
Berberis amplectens +
Flowering spring (Apr–May).  +
Berberis aquifolium +
Flowering winter–spring (Mar–Jun).  +
Berberis bealei +
Flowering fall–winter (Dec–Mar).  +
Berberis canadensis +
Flowering spring (Apr–May).  +
Berberis darwinii +
Flowering winter (Feb).  +
Berberis dictyota +
Flowering winter–spring (Mar–Apr).  +
Berberis fendleri +
Flowering spring–summer (May–Aug).  +
Berberis fremontii +
Flowering spring (Apr–Jun).  +
Berberis haematocarpa +
Flowering winter–spring (Feb–Jun).  +
Berberis harrisoniana +
Flowering winter (Jan–Mar).  +
Berberis higginsiae +
Flowering spring (Apr–Jun).  +
Berberis nervosa +
Flowering winter–spring (Mar–Jun).  +
Berberis nevinii +
Flowering winter–spring (Feb–May).  +
Berberis pinnata subsp. insularis +
Flowering winter (Mar).  +
Berberis pinnata subsp. pinnata +
Flowering winter–spring (Feb–May).  +
Berberis piperiana +
Flowering winter–spring (Mar–Jun).  +
Berberis pumila +
Flowering winter–spring (Mar–May).  +
Berberis repens +
Flowering spring (Apr–Jun).  +
Berberis swaseyi +
Flowering winter–spring (Feb–Apr).  +
Berberis thunbergii +
Flowering late winter–spring (Mar–May).  +
Berberis trifoliolata +
Flowering winter–spring (Feb–Apr).  +
Berberis vulgaris +
Flowering spring (May–Jun).  +
Berberis wilcoxii +
Flowering spring (Apr–May).  +
Berchemia scandens +
Flowering Mar–May.  +
Bergerocactus emoryi +
Flowering Apr–Jul.  +
Bergia texana +
Flowering summer(–early fall).  +
Berlandiera lyrata +
Flowering nearly year round.  +
Berlandiera monocephala +
Flowering May–Oct.  +
Berlandiera pumila +
Flowering Apr–Aug.  +
Berlandiera subacaulis +
Flowering year round.  +
Berlandiera texana +
Flowering Mar–Nov.  +
Berlandiera ×betonicifolia +
Flowering Apr–Sep.  +
Berlandiera ×humilis +
Flowering Mar–Jun(–Dec).  +
Berlandiera ×macrophylla +
Flowering late spring–fall.  +
Bernardia incana +
Flowering spring–summer  +, fruiting summer–fall.  +
Bernardia myricifolia +
Flowering spring–summer  +, fruiting summer–fall.  +
Bernardia obovata +
Flowering spring  +, fruiting summer–fall.  +
Berteroa incana +
Flowering May–Sep.  +
Beta vulgaris subsp. maritima +
Flowering spring–early fall.  +
Beta vulgaris subsp. vulgaris +
Flowering spring–summer.  +
Betula alleghaniensis +
Flowering late spring.  +
Betula cordifolia +
Flowering late spring.  +
Betula glandulosa +
Flowering late spring.  +
Betula kenaica +
Flowering late spring.  +
Betula lenta +
Flowering late spring.  +
Betula michauxii +
Flowering late spring.  +
Betula minor +
Flowering late spring.  +
Betula murrayana +
Flowering late spring.  +
Betula nana subsp. exilis +
Flowering late spring.  +
Betula nana subsp. nana +
Flowering late spring.  +
Betula neoalaskana +
Flowering late spring.  +
Betula nigra +
Flowering late spring.  +
Betula occidentalis +
Flowering late spring.  +
Betula papyrifera +
Flowering late spring.  +
Betula pendula +
Flowering late spring.  +
Betula populifolia +
Flowering late spring.  +
Betula pubescens subsp. pubescens +
Flowering late spring.  +
Betula pubescens subsp. tortuosa +
Flowering late spring.  +
Betula pumila +
Flowering late spring.  +
Betula uber +
Flowering late spring.  +
Bidens amplissima +
Flowering Aug–Oct.  +
Bidens aristosa +
Flowering Aug–Oct(–Nov).  +
Bidens aurea +
Flowering mostly Aug–Sep.  +
Bidens beckii +
Flowering Jul–Sep.  +
Bidens bidentoides +
Flowering Sep.  +
Bidens bigelovii +
Flowering Sep.  +
Bidens bipinnata +
Flowering (Jun–)Aug–Sep(–Oct).  +
Bidens cernua +
Flowering late (Jul–)Aug–Sep(–Oct).  +
Bidens connata +
Flowering Aug–Oct.  +
Bidens discoidea +
Flowering Aug–Oct(–Nov).  +
Bidens eatonii +
Flowering Sep–Oct.  +
Bidens frondosa +
Flowering (Jun–)Aug–Sep(–Oct).  +
Bidens heterodoxa +
Flowering Aug–Oct.  +
Bidens heterosperma +
Flowering Sep–Oct.  +
Bidens hyperborea +
Flowering Aug–Oct.  +
Bidens laevis +
Flowering Aug–Oct(–Dec).  +
Bidens lemmonii +
Flowering Sep–Oct.  +
Bidens leptocephala +
Flowering Sep.  +
Bidens mitis +
Flowering Sep–Nov.  +
Bidens pilosa +
Flowering year round.  +
Bidens polylepis +
Flowering Aug–Oct.  +
Bidens tenuisecta +
Flowering (Jul–)Aug–Sep(–Oct).  +
Bidens trichosperma +
Flowering Aug–Oct.  +
Bidens tripartita +
Flowering Aug–Oct.  +
Bidens vulgata +
Flowering Aug–Sep(–Oct).  +
Bigelowia nudata var. australis +
Flowering Oct–May.  +
Bigelowia nudata var. nudata +
Flowering Aug–Oct(–Nov).  +
Bigelowia nuttallii +
Flowering Sep–Oct(–Nov).  +
Billieturnera helleri +
Flowering year-round.  +
Bischofia javanica +
Flowering Feb–Apr  +, fruiting Jul–Nov.  +
Bistorta bistortoides +
Flowering Jul–Sep.  +
Bistorta officinalis +
Flowering May–Aug.  +
Bistorta plumosa +
Flowering May–Jun.  +
Bistorta vivipara +
Flowering Jun–Sep.  +
Blennosperma bakeri +
Flowering Feb–Apr.  +
Blennosperma nanum var. nanum +
Flowering Feb–May.  +
Blennosperma nanum var. robustum +
Flowering Feb–May.  +
Blepharipappus scaber +
Flowering Apr–Sep.  +
Blepharizonia laxa +
Flowering Jul–Nov.  +
Blepharizonia plumosa +
Flowering Jul–Nov.  +
Bletia patula +
Flowering Mar–May.  +
Bletia purpurea +
Flowering Dec–May, sporadically all year.  +
Bloomeria clevelandii +
Flowering spring (Apr–Jun).  +
Bloomeria crocea var. aurea +
Flowering spring (Apr–Jun).  +
Bloomeria crocea var. crocea +
Flowering spring (Apr–Jun).  +
Bloomeria crocea var. montana +
Flowering spring (Apr–Jun).  +
Bloomeria humilis +
Flowering spring.  +
Blutaparon vermiculare +
Flowering year-round.  +
Blysmopsis rufa +
Fruiting late summer.  +
Blyxa aubertii +
Flowering summer–fall.  +
Boechera acutina +
Flowering Jun–Jul.  +
Boechera arcuata +
Flowering Mar–Jun.  +
Boechera atrorubens +
Flowering Apr–May.  +
Boechera bodiensis +
Flowering Jul–Aug.  +
Boechera breweri subsp. breweri +
Flowering Mar–Jul.  +
Boechera breweri subsp. shastaensis +
Flowering Mar–Jun.  +
Boechera burkii +
Flowering Apr–May.  +
Boechera calderi +
Flowering Jun–Aug.  +
Boechera californica +
Flowering Mar–Jun.  +
Boechera canadensis +
Flowering Apr–Jul.  +
Boechera cascadensis +
Flowering Jun.  +