Tetradymia spinosa
Bot. Beechey Voy., 360. 1839.
IllustratedEndemic
Shrubs, 10–100 cm. Stems 1–5+, erect or spreading, spiny, evenly pannose. Leaves: primaries forming recurved spines, 5–25 mm; secondaries linear-filiform to spatulate, 3–25 (× 1–2) mm, glabrous or glabrescent. Heads 1–2 (in axils of spines). Peduncles 5–30 mm. Involucres hemispheric, 8–12 mm. Phyllaries 4–6, oblong to ovate. Florets 5–8; corollas pale to bright-yellow, 6–10 mm. Cypselae 6–8 mm, copiously pilose (hairs 9–12 mm); pappi of ca. 25, subulate scales 6–9 mm. 2n = 60.
Phenology: Flowering spring.
Habitat: Usually sandy soils of alkali sinks, shadscale scrub, pinyon-juniper woodlands
Elevation: 800–2400 m
Distribution
Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah., Wyo.
Discussion
Selected References
None.
Lower Taxa
None.
"[mm" is not declared as a valid unit of measurement for this property.
... more about "Tetradymia spinosa"
introrse +
connate +
papillate +
truncate-penicillate;usually truncate;rounded-truncate +
scarious +
hispidulous +
papillate +
continuous +
decurrent +
nerved +
linear;filiform narrowly lanceolate or oblanceolate +
winged;nerved;ribbed +
1;15 +
stigmatic +
persistent +
70;150 +
absent +
not 2-lipped +
monomorphic +
5-ribbed +
pilose +
6mm;8mm +
staminate +
straight +
distinct +
proximal +
5;8 +
bisexual +
dispersed +
discoid +
singly +
indeterminate +
1;2 +
Present +
surrounding +
hemispheric +
sessile +
alternate +
cauline +
recurved +
scarious +
2-carpellate +
inferior +
attached +
anatropous +
absent +
tough +
thick +
absent +
connate +
persistent +
distinct +
herbaceous +
falling +
erect +
subequal +
equal +
Bot. Beechey Voy., +
1839 +
absent +
epaleate +
foveolate +
conic;usually flat;convex +
fibrous +
white;stramineous +
subulate +
exalbuminous +
modifed +
1;2 +
recurved +
alternate +
pannose +
2-branched +
glabrous +
papillate +
Tetradymia spinosa +
Tetradymia +
species +
dilated +
longer +