Thelesperma flavodiscum
Rhodora 61: 245. 1959.
Endemic
Basionym: Thelesperma filifolium var. flavodiscum Shinners Field & Lab. 18: 98. 1950
Annuals, 30–70 (–120+) cm. Cauline leaves ± scattered over proximal 9/10 of plant heights, internodes mostly 35–100+ mm; lobes mostly linear to filiform, sometimes oblanceolate, (10–) 25–45+ × 0.5–1 (–2) mm. Calyculi of 7–9 linear to narrowly triangular bractlets 4–6 (–8) mm. Ray-florets 8; laminae yellow, 12–20+ mm. Disc corollas yellow, often with redbrown nerves, throats shorter than lobes. Cypselae 4–5 mm; pappi 0.5–1.5+ mm. 2n = 18, 20.
Phenology: Flowering May–Jun.
Habitat: On sands, post-oak savannas
Elevation: 100–200 m
Discussion
Differences between Thelesperma flavodiscum and T. filifolium are subtle; they may be better treated as one species.
Selected References
None.
Lower Taxa
None.
"broader" is not a number.
... more about "Thelesperma flavodiscum"
introrse +
connate +
herbaceous +
scarious +
absent +
hirsute +
papillate +
corymbiform +
continuous +
decurrent +
lobed +
winged;ribbed;winged;ribbed +
3;8 +
distinct +
herbaceous +
linear;narrowly triangular +
stigmatic +
absent +
scattered +
zygomorphic +
longer +
monomorphic +
arcuate +
dimorphic +
outer +
obcompressed +
4mm;5mm +
staminate +
Tex. +
straight +
beaked +
linear-fusiform;4-angled;ovate;orbiculate;oblong;linear;cuneate +
distinct +
proximal +
1;5 +
bisexual +
dispersed +
singly +
indeterminate +
surrounding +
hemispheric;urceolate +
yellow +
opposite +
lance-linear +
equal +
winged +
scarious +
redbrown +
2-carpellate +
inferior +
attached +
anatropous +
falling +
obovate;oblong +
scarious +
persistent +
falling +
absent +
tough +
thick +
absent +
connate +
persistent +
connate +
falling +
unequal +
equal +
proximal +
9/10 +
Rhodora +
1959 +
neuter +
absent +
paleate +
flat;convex +
fibrous +
subulate +
exalbuminous +
modifed +
Endemic +
alternate +
branched +
erect +
2-branched +
papillate +
Thelesperma flavodiscum +
Thelesperma +
species +
shorter +
equal +
equaling +
annual +
subshrub +