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Onagraceae tribe Onagreae
zygomorphic (in Oenothera), (3 or) 4-merous; stamens 2 times as many, or rarely as many, as sepals; pollen usually shed in monads, rarely tetrads (Chylismia

5 KB (617 words) - 21:02, 7 June 2022
Onagraceae
with some shrubs and a few small to medium-sized trees. Most species occur in open habitats, ranging from dry to wet, with a few species of Ludwigia aquatic

19 KB (805 words) - 21:01, 7 June 2022
Fagaceae
or deciduous, shrubs sometimes rhizomatous. Winter buds sessile, with few-to-many imbricate scales (2 valvate scales enclosing imbricate scales in Castanea);

13 KB (591 words) - 08:36, 30 July 2020
Cactaceae
tubercles or in the axils of leaves. The areoles are woolly cushions with few to many spines (modified leaves of the shoot); spines are absent in some taxa

40 KB (1,967 words) - 15:27, 15 December 2020
Carex (section Key to sections of Carex)
arrangement met many of the criticisms of Kükenthal’s arrangement, but it cannot be applied to the genus on a worldwide basis because few species of subg

80 KB (3,349 words) - 15:29, 15 December 2020
Liliaceae
dehiscence, cordate to linear; ovary superior to inferior, (2–) 3 (–4) -locular, often with septal nectaries, ovules usually several or many per locule; styles

29 KB (1,493 words) - 05:37, 30 July 2020
Poaceae tribe Andropogoneae
or the base of the rame axis may be naked. Individual plants may bear few to many rames, and the rames themselves may be aggregated in a wide array of primary

31 KB (2,561 words) - 04:21, 30 July 2020
Poaceae (section Key to Tribes)
midvein, awns usually 1 (-3), arising basally to terminally; paleas usually with 2 major veins, with 0 to many additional veins between the major veins, sometimes

35 KB (1,876 words) - 02:36, 30 July 2020
Crassulaceae
base of carpels; stamens as many as sepals or 2 times as many and in 2 series, antipetalous if in 1 series, free or adnate to corolla base (or tube); anthers

18 KB (1,028 words) - 12:59, 30 July 2020
Quercus
(saucer to cup or bowl to goblet-shaped), without indication of valves, covering base of nut (rarely whole nut), scaly, scales imbricate or reduced to tubercles

13 KB (1,271 words) - 08:47, 30 July 2020
Cirsium (section Key to Groups of Cirsium Species)
much more prudent to recognize varieties—entities that may be expected to freely intergrade—rather than species. Many problems remain to be worked out in

60 KB (2,205 words) - 13:43, 10 February 2021
Castilleja
which are diagnostic for many taxa. Because these characters are difficult to assess once dried, herbarium material can be difficult to identify. Bract and

79 KB (2,746 words) - 18:50, 29 July 2020
Betulaceae
buds stipitate or sessile, with either 2–3 valvate scales (stipules) or few-to-many imbricate scales (or occasionally naked); terminal bud absent. Leaves

14 KB (815 words) - 08:47, 30 July 2020
Mielichhoferiaceae
complanate-foliate, unbranched or irregularly 2- to occasionally multifid when sterile; rhizoids few-to-many, pigmented, smooth to papillose, often bearing multicellular

15 KB (690 words) - 07:39, 30 July 2020
Bryaceae
unbranched to sparsely branched by subfloral innovations, stolons absent (present in Rhodobryum); rhizoids few-to-many, color various, smooth to papillose

20 KB (757 words) - 07:35, 30 July 2020
Annonaceae
margins entire. Inflorescences axillary to leaf-scars on old wood or to leaves on new shoots, solitary flowers or few-flowered fascicles, pedunculate; bracts

9 KB (359 words) - 08:43, 30 July 2020
Iridaceae
arcuate [declinate]; filaments distinct or partly to completely connate, sometimes weak, unable to support anthers; anthers with 2 pollen-sacs, extrorse

15 KB (556 words) - 06:04, 30 July 2020
Polygalaceae
including a few North American taxa, have different chromosome numbers, with discrepancies and uncertainties as to the base number for many groups. Even

16 KB (1,157 words) - 21:03, 7 June 2022
Crataegus
adnate to hypanthium, styles 1–5, lateral, distinct, adnate most of length, exsert; ovules 2, superposed. Fruits pomes, yellow to red or purplish to black

26 KB (2,400 words) - 15:31, 15 December 2020
Asteraceae tribe Senecioneae
from bases to apices or appendages, apices rounded to ± truncate or with deltate to lanceolate or penicillate, abaxially and adaxially papillate to hispidulous

23 KB (1,021 words) - 21:10, 29 July 2020