Coreopsis sect. Eublepharis

Nuttall

Trans. Amer. Philos. Soc., n. s. 7: 359. 1841.

Treatment appears in FNA Volume 21. Treatment on page 195. Mentioned on page 186.

Perennials (sometimes flowering first-year; bases ± rhizomatous or cormose). Leaves basal and cauline, usually alternate, sometimes both alternate and opposite, or all opposite; blades mostly simple, sometimes with 1–2 lateral lobes (none in C. nudata). Calyculi of 5–8 (–12+) bractlets. Phyllaries (7–) 8 (–9). Ray-florets 8 (–13), neuter; laminae yellow or purple to pink or white, ± cuneate, broadest distal to middles, usually 3-lobed (middle lobes sometimes toothed). Disc-florets 40–120+; corollas ochroleucous to yellow or redbrown to purple or apices redbrown to purple, lobes 4; style-branch apices ± truncate. Paleae ± linear (not distally dilated or attenuate). Cypselae obovate or oblong to linear, margins winged or not, wings ± corky to chartaceous, ± pectinate, ± spreading, not ciliolate, faces glabrous, smooth or ± tuberculate; pappi 0, or (1–) 2 cusps, awns, or scales (0.1–1+ mm). x = 13.

Distribution

e, se North America

Discussion

Species 4 (4 in the flora).

Selected References

None.

Key

1 Leaves lacking blades (petioles ± terete, 5–30+ cm × 0.5–2+ mm, functionally equivalent to leaves) Coreopsis nudata
1 Leaves with blades (petioles not 5–30+ cm × 0.5–2 mm) > 2
2 Ray corollas ± pinkish to white; cypselae 1.3–1.8 mm, not winged Coreopsis rosea
2 Ray corollas yellow; cypselae 3–4.5 mm, wings ± pectinate > 3
3 Leaves all opposite; petioles ± ciliate; wings of cypselae 0.1 mm wide; pappi of 1–2 cusps 0.1–0.2 mm Coreopsis integrifolia
3 Leaves usually all or mostly alternate, seldom some or all opposite; petioles not ciliate; wings of cypselae 0.2–0.4+ mm wide; pappi of 2, subulate scales 0.5–1+ mm Coreopsis gladiata

"broader" is not a number.

not tailed +, rounded +  and obtuse +
dark +  and pale +
redbrown;purple +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
paniculiform +, cymiform +  and corymbiform +
indeterminate +  and determinate +
John L. Strother +
Nuttall +
smooth +  and ciliate or barbed +
1 +  and 2 +
decurrent +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
ochroleucous +  and yellow or redbrown +
winged +  and thin-margined +
oblong +  and linear +
fertile +  and bisexual +
fertile +  and bisexual +
e +  and se North America +
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 +
purple +  and pink or white +
3-lobed +  and cuneate +
broadest +
sessile +  and petiolate +
opposite +  and alternate +
cauline +  and basal +
less deltate +  and lanceovate +
not +  and winged +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
ovate;linear or subulate +
persistent +
of 1-2 , smooth to ciliate or barbed awns or scales +  and coroniform +
Trans. Amer. Philos. Soc., n. s. +
fertile +  and sterile +
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. Eublepharis +
Coreopsis +
section +
toothed +  and entire +
shrub +  and subshrub +
not ciliolate +
less corky +  and chartaceous +
pectinate +
membranous +