Tetragonotheca ludoviciana
Pl. Tex., 13. 1873.
Endemic
Basionym: Halea ludoviciana Torrey & A. Gray Fl. N. Amer. 2: 304. 1842
Treatment appears in FNA Volume 21. Treatment on page 178.
Stems sparsely tomentulose or glabrous. Leaves mostly cauline (distal connate-perfoliate); blades rounded-deltate to ovate, 8–12 × 4–9 cm, coarsely toothed. Ray-florets 12–13; laminae 8–18 mm. Cypselae ± quadrate, 4–6 mm; pappi of 16–30, obovate to spatulate scales 0.5–2 mm. 2n = 34.
Phenology: Flowering late spring–summer.
Habitat: Deep sandy soils with scrub oaks
Elevation: 10–100 m
Discussion
Selected References
None.
Lower Taxa
None.
... more about "Tetragonotheca ludoviciana"
introrse +
connate +
herbaceous +
scarious +
absent +
hirsute +
papillate +
corymbiform +
continuous +
decurrent +
toothed;rounded-deltate;ovate +
winged;ribbed;winged;ribbed +
1;15 +
stigmatic +
absent +
zygomorphic +
yellow +
monomorphic +
32-40-ribbed +
dimorphic +
quadrate +
4mm;6mm +
staminate +
straight +
scabrellous +
distinct +
proximal +
1;5 +
bisexual +
dispersed +
singly +
indeterminate +
surrounding +
obpyramidal;hemispheric +
opposite +
cauline +
deltate +
2-carpellate +
inferior +
attached +
anatropous +
persistent +
falling +
absent +
tough +
thick +
absent +
connate +
persistent +
distinct +
falling +
Pl. Tex., +
1873 +
pistillate +
absent +
fertile +
paleate +
conic +
fibrous +
spatulate +
exalbuminous +
modifed +
Endemic +
alternate +
erect +
2-branched +
papillate +
Tetragonotheca ludoviciana +
Tetragonotheca +
species +
cylindric +
ampliate +
much shorter +
toothed +
perennial +