Show Lower Taxa
Coreopsis sect. Silphidium
in A. Gray et al., Syn. Fl. N. Amer. 1(2): 294. 1884.
Basionym: Silphidium Torrey & A. Gray Fl. N. Amer. 2: 341. 1842
Perennials. Leaves cauline, opposite; blades usually simple, sometimes with 1–2 auricles at base (margins dentate). Calyculi of 3–8+ bractlets. Phyllaries 5. Ray-florets 4–5, neuter; laminae ± elliptic to oblong, broadest at or near middle, apices entire or 2–3-toothed. Disc-florets 10–15+; corollas ochroleucous or pale-yellow, lobes 5; style-branch apices ± conic-attenuate. Paleae ± linear. Cypselae ± linear, margins thin, not winged, not ciliolate, faces smooth, glabrous; pappi 0 or (1–) 2 cusps (0.1–0.2+ mm). x = 13.
Distribution
se United States
Discussion
Species 1.
Selected References
None.
Lower Taxa
"broader" is not a number.
... more about "Coreopsis sect. Silphidium"
introrse +
connate +
herbaceous +
2-3-toothed;entire +
scarious +
absent +
hirsute +
papillate +
continuous +
decurrent +
simple +
entire +
lobed +
winged;ribbed;winged;ribbed +
3;8 +
distinct +
herbaceous +
stigmatic +
absent +
zygomorphic +
bristly +
dimorphic +
staminate +
se United States +
straight +
beaked +
glabrous +
linear-fusiform;4-angled;ovate;orbiculate;oblong;linear;cuneate +
distinct +
proximal +
1;5 +
bisexual +
dispersed +
singly +
indeterminate +
surrounding +
less globose;cylindric +
broadest +
opposite +
cauline +
not winged +
not ciliolate +
scarious +
thin +
2-carpellate +
inferior +
attached +
anatropous +
falling +
ovate;linear or subulate +
scarious +
persistent +
falling +
absent +
tough +
thick +
absent +
connate +
persistent +
distinct +
falling +
unequal +
in A. Gray et al., Syn. Fl. N. Amer. +
1884 +
neuter +
absent +
paleate +
flat;convex +
fibrous +
exalbuminous +
modifed +
alternate +
branched +
erect +
2-branched +
papillate +
Coreopsis sect. Silphidium +
Coreopsis +
section +
equaling +
perennial +
ciliolate +
membranous +