Coreopsis stillmanii

(A. Gray) S. F. Blake

Proc. Amer. Acad. Arts 49: 342. 1913.

Basionym: Leptosyne stillmanii A. Gray J. Acad. Nat. Sci. Philadelphia 3: 91. 1855
Treatment appears in FNA Volume 21. Treatment on page 189.

Annuals, 5–20+ cm. Leaf-blades simple or 1 (–2) -pinnately lobed, terminal lobes spatulate to narrowly oblanceolate, 1–3 mm wide. Peduncles 5–12 (–20+) cm. Calyculi of 5–7+ oblong to linear bractlets 4–8 (–10) mm, ciliolate near bases. Phyllaries (5–) 8, ovate to lanceovate, 4–5 (–7) mm. Ray-florets 5–8; laminae 8–12 (–15+) mm. Disc-florets 12–30+; corollas 2.5–3.5 mm. Cypselae ± obovate, 4–5 mm, not marked adaxially with red, wings corky-thickened, faces smooth or ± tuberculate, not hirtellous. 2n = 24.


Phenology: Flowering Mar–May.
Habitat: Rocky slopes, serpentine ridges
Elevation: 400–800 m

Discussion

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Coreopsis stillmanii"
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 +
(A. Gray) S. F. Blake +
smooth +  and ciliate or barbed +
1 +  and 2 +
decurrent +
Leptosyne stillmanii +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
oblong;linear +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
barbellulate +  and barbellate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
winged +  and thin-margined +
not hirtellous +
corky-thickened +
fertile +  and bisexual +
fertile +  and bisexual +
400–800 m +
hairy +  and glabrous +
tuberculate +  and smooth +
linear-fusiform;4-angled;ovate;orbiculate;oblong;linear;cuneate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rocky slopes, serpentine ridges +
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 +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
distal +  and middle +
flabellate +  and obovate +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
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 +
12 cm120 mm <br />0.12 m <br /> (20 cm200 mm <br />0.2 m <br />) +
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Flowering Mar–May. +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Proc. Amer. Acad. Arts +
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 stillmanii +
Coreopsis sect. Leptosyne +
species +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
toothed +  and entire +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
shrub +  and subshrub +
not ciliolate +
less corky +  and chartaceous +
tuberculate +  and smooth +
lobed +  and toothed +
membranous +