Hecastocleis

A. Gray

Proc. Amer. Acad. Arts 17: 220. 1882.

Etymology: Greek hecastos, each, and cleios, to shut up, alluding to one floret enclosed in each involucre
Treatment appears in FNA Volume 19. Treatment on page 71. Mentioned on page 12, 56, 64, 70.
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 TaxonIllustrator 
FNA19 P01 Hecastocleis shockley.jpegTrixis californica var. californica
Hecastocleis shockleyi
Acourtia runcinata
Acourtia wrightii
Yevonn Wilson-Ramsey
Yevonn Wilson-Ramsey
Yevonn Wilson-Ramsey
Yevonn Wilson-Ramsey

Subshrubs or shrubs, 40–80 (–150+) cm (usually with tufts of hairs in axils of leaves). Leaves cauline; sessile; blades linear, bases cuneate, margins entire or proximally spiny, faces tomentulose, glabrescent. Heads discoid, clustered in second-order heads (each cluster 15–25 mm diam. and subtended by ovate to orbiculate, prickly-margined bracts). Involucres (each enclosing 1 floret) cylindric to fusiform, 10 mm. Phyllaries in 2–3 series, ovate to lanceolate or linear, unequal, apices acute to cuspidate. Receptacles flat, smooth, glabrous, epaleate. Florets 1, bisexual, fertile; corollas reddish purple to greenish white, actinomorphic (lobes 5, lance-linear, glabrous); anther basal appendages slightly fimbriate, apical appendages lanceolate, acute; style-branches relatively stout (0.1–0.5 mm), apices rounded (abaxial faces papillose to pilose). Cypselae ± terete (± 4 mm), not beaked, obscurely 4–5-nerved, faces glabrescent, not glandular-hairy; pappi of 6 unequal, lanceolate or multitoothed scales (sometimes ± coalescent and forming lacerate crowns). x = 8.

Distribution

sw United States

Discussion

Species 1.

Selected References

None.

... more about "Hecastocleis"
rounded;acute;cuspidate +
scarious +
acute +  and lanceolate +
racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Beryl B. Simpson +
A. Gray +
cuneate +
compound +  and simple +
ribbed;smooth +
barbellulate +  and smooth +
actinomorphic +
reddish purple +  and greenish white +
sw United States +
Greek hecastos, each, and cleios, to shut up, alluding to one floret enclosed in each involucre +
not glandular-hairy +, glabrescent +  and tomentulose +
pistillate +, staminate +  and neuter +
fertile +  and bisexual +
winged +  and beaked +
dispersed +
in corymbiform , paniculiform or racemiform , arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
cylindric;fusiform +
10 cm100 mm <br />0.1 m <br /> (?) +
spiny +  and entire +
pinnatifid +, lobed +  and dentate +
2-carpellate +
persistent +
connate +  and distinct +
Proc. Amer. Acad. Arts +
flat;convex +
barbellulate +  and smooth +
multitoothed +  and lanceolate +
unequal +
exalbuminous +
prostrate +  and ascending +
appendaged +  and truncate +
hairy +  and glabrous +
papillate +
Compositae +
Hecastocleis +
Asteraceae tribe Mutisieae +
perennial +  and annual +
80 cm800 mm <br />0.8 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
shrub +  and subshrub +