Tetragonotheca texana
Proc. Amer. Acad. Arts 1: 48. 1847.
Stems sparsely tomentulose or glabrous (nodes usually auriculate-appendaged). Leaves mostly cauline; blades ovate to lanceolate in outline, 3–7 × 1–3 cm, subentire to incised or irregularly pinnatifid. Ray-florets 8–13; laminae 10–18 mm. Cypselae ± quadrate, 2.5–4 mm; pappi 0, or (often fragile) of 1–10+ subulate or acerose scales to 0.5 (–1.5) mm. 2n = 34.
Phenology: Flowering spring–summer.
Habitat: Sandy soils, often with mesquite
Elevation: 50–200 m
Distribution
Tex., Mexico (Coahuila), Mexico (Nuevo León), Mexico (Tamaulipas)
Discussion
Selected References
None.
Lower Taxa
None.
... more about "Tetragonotheca texana"
introrse +
connate +
herbaceous +
scarious +
absent +
hirsute +
papillate +
corymbiform +
continuous +
decurrent +
subentire;incised or irregularly pinnatifid +
winged;ribbed;winged;ribbed +
1;15 +
stigmatic +
absent +
zygomorphic +
yellow +
monomorphic +
32-40-ribbed +
dimorphic +
quadrate +
2.5mm;4mm +
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 +
Proc. Amer. Acad. Arts +
1847 +
pistillate +
absent +
fertile +
paleate +
conic +
fibrous +
spatulate +
exalbuminous +
modifed +
alternate +
erect +
2-branched +
papillate +
Tetragonotheca texana +
Tetragonotheca +
species +
cylindric +
ampliate +
much shorter +
toothed +
perennial +