Coreopsis sect. Leptosyne

(de Candolle) O. Hoffmann in H. G. A. Engler and K. Prantl

in H. G. A. Engler and K. Prantl, Nat. Pflanzenfam. 54[IV,5]: 243. 1891.

Basionym: Leptosyne de in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 531. 1836
Treatment appears in FNA Volume 21. Treatment on page 188. Mentioned on page 186, 189.

Annuals. Leaves mostly basal, seldom cauline; mostly alternate, sometimes opposite; blades simple or 1–2-pinnately lobed. Calyculi of (3–) 5–8 bractlets. Phyllaries 5–8. Ray-florets (5–) 8 (–12+), pistillate, fertile; laminae yellow, ± obovate or flabellate, each broadest distal to middle, apices entire or 2–3-toothed. Disc-florets 8–60 (–100+); corollas yellow (to orange), lobes 5; style-branch apices ± truncate or deltoid. Paleae oblong or lanceolate to linear. Cypselae ± oblong to spatulate, wings ± corky to chartaceous, entire, ± spreading, not ciliolate, faces smooth or ± tuberculate; pappi 0 or coroniform (0.1–0.2 mm). x = 12.

Distribution

Calif., nw Mexico

Discussion

Species 3 (3 in the flora).

The name Coreopsis sect. Leptosyne has been misattributed to S. F. Blake, Proc. Amer. Acad. Arts 49: 341. 1913.

Selected References

None.

Key

1 Leaf blades simple or 1(–2)-pinnately lobed, terminal lobes spatulate to narrowly oblanceolate, 1–3 mm wide; calyculus bractlets ciliolate near bases Coreopsis stillmanii
1 Leaf blades simple or pinnately lobed, terminal lobes filiform to linear, 0.5–1(–1.5) mm wide; calyculus bractlets not ciliolate > 2
2 Cypselae marked adaxially with red dots or dashes near wing/body interface, wings ± corky-thickened, faces ± tuberculate and/or hirtellous Coreopsis californica
2 Cypselae not marked adaxially with red, wings usually thin, sometimes corky-thick-ened, faces usually smooth, rarely tuberculate, not hirtellous Coreopsis douglasii

"broader" is not a number.

... more about "Coreopsis sect. Leptosyne"
not tailed +, rounded +  and obtuse +
dark +  and pale +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
paniculiform +, cymiform +  and corymbiform +
indeterminate +  and determinate +
John L. Strother +
(de Candolle) O. Hoffmann in H. G. A. Engler and K. Prantl +
smooth +  and ciliate or barbed +
1 +  and 2 +
decurrent +
Leptosyne de +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
winged +  and thin-margined +
less oblong +  and spatulate +
fertile +  and bisexual +
fertile +  and bisexual +
Calif. +  and nw Mexico +
hairy +  and glabrous +
tuberculate +  and smooth +
linear-fusiform;4-angled;ovate;orbiculate;oblong;linear;cuneate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
discoid +  and radiate +
in open , more or less corymbiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
less globose;cylindric +
distal +  and middle +
flabellate +  and obovate +
sessile +  and petiolate +
opposite +  and alternate +
cauline +  and basal +
less deltate +  and lanceovate +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
lanceolate;linear +
persistent +
coroniform +
in H. G. A. Engler and K. Prantl, Nat. Pflanzenfam. +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Coreopsideae +  and Undefined (tribe Undefined) subtribe Petrobiinae +
Coreopsis sect. Leptosyne +
Coreopsis +
section +
toothed +  and entire +
shrub +  and subshrub +
not ciliolate +
less corky +  and chartaceous +
lobed +  and toothed +
membranous +