Leuciva

Rydberg in N. L. Britton et al.

in N. L. Britton et al., N. Amer. Fl. 33: 8. 1922.

Common names: Woolly sumpweed
Etymology: Greek leuc-, white, and Iva, a related genus, perhaps alluding to white indument of leaves
Treatment appears in FNA Volume 21. Treatment on page 29. Mentioned on page 9, 25.
 TaxonIllustrator 
FNA21 P05 Oxytenia acerosa.jpegOxytenia acerosa
Leuciva dealbata
Hedosyne ambrosiifolia
Linda Ann Vorobik
Barbara Alongi
Yevonn Wilson-Ramsey

Perennials (sometimes flowering in first-year), 20–60+ cm. Stems erect, branching from bases and/or distally. Leaves cauline; mostly alternate; petiolate; blades lanceolate to oblanceolate, laciniately pinnately lobed, abaxial faces ± lanate, adaxial ± tomentose, both usually glanddotted. Heads discoid or disciform, in (ebracteate) paniculiform arrays. Involucres ± hemispheric, 2–4+ mm diam. Phyllaries persistent, 5+ in 1 (–2) series, distinct, outer 5 herbaceous, inner 0 or scarious to membranous. Receptacles convex, epaleate. Pistillate florets 0 or 3–5; corollas whitish, tubular, or 0. Functionally staminate florets 5–12+; corollas whitish, funnelform, lobes 5, erect (filaments connate, anthers coherent or distinct). Receptacles convex, epaleate. Cypselae pyriform, ± obcompressed, densely glanddotted; pappi 0. x = 18?

Distribution

sw United States, n Mexico

Discussion

Species 1.

Selected References

None.

Lower Taxa

... more about "Leuciva"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
paniculiform +
indeterminate +  and determinate +
John L. Strother +
Rydberg in N. L. Britton et al. +
decurrent +
compound +  and simple +
lobed;lanceolate;oblanceolate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Woolly sumpweed +
villous +, strigillose +, hispidulous +, glabrous +  and warty +
scabrellous +  and tuberculate +
obcompressed +  and pyriform +
fertile +  and bisexual +
sw United States +  and n Mexico +
Greek leuc-, white, and Iva, a related genus, perhaps alluding to white indument of leaves +
glabrous +, stipitate-glandular +  and hairy +
staminate +  and pistillate +
winged +  and beaked +
dispersed +
disciform +  and discoid +
in corymbiform , glomerate , paniculiform , racemiform or spiciform , arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
scarious to membranous +
membranous +  and scarious +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
hemispheric +
conspicuous +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
persistent +
5 +  and 80 +
unequal +  and subequal +
in N. L. Britton et al., N. Amer. Fl. +
bearing subulate enations +, hairy +  and bristly +
convex;convex +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Ambrosieae +  and Undefined (tribe Undefined) subtribe Iveae +
Leuciva +
Asteraceae (tribe Heliantheae) subtribe Ambrosiinae +
campanulate +  and cylindric +
toothed +  and entire +
20 cm200 mm <br />0.2 m <br /> (60 cm600 mm <br />0.6 m <br />) +
shrub +  and subshrub +