Show Lower Taxa
Tetradymia axillaris
Bot. Gaz. 37: 277. 1904.
Endemic
Shrubs, 50–150 cm. Stems 1–5+, erect or spreading, spiny, evenly pannose. Leaves: primaries forming straight, ± squarrose spines, 10–50 mm; secondaries filiform to clavate, 2–12 (–20) mm, sparsely arachnose or glabrous. Heads 1–3 (in axils of spines). Peduncles 4–15 mm. Involucres turbinate to campanulate, 7–9 mm. Phyllaries 5, ovate. Florets 5–7; corollas pale-yellow, 7.5–9 mm. Cypselae 4.5–5.5 mm, densely pilose (hairs 6–14 mm); pappi of ca. 25, subulate to setiform scales 6–7.5 mm.
Distribution
Calif., Nev., Utah
Discussion
Varieties 2 (2 in the flora).
The two varieties of Tetradymia axillaris are partially sympatric and intergrade in areas of overlap.
Selected References
None.
Key
| 1 | Peduncles and phyllaries pannose to tomentose; hairs of cypselae 9–14 mm | Tetradymia axillaris var. longispina |
| 1 | Peduncles and phyllaries glabrous; hairs of cypselae 6–8(–10) mm | Tetradymia axillaris var. axillaris |
... more about "Tetradymia axillaris"
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 +
pale-yellow +
monomorphic +
5-ribbed +
pilose +
4.5mm;5.5mm +
staminate +
straight +
distinct +
proximal +
5;7 +
bisexual +
dispersed +
discoid +
singly +
indeterminate +
1;3 +
surrounding +
turbinate;campanulate +
sessile +
alternate +
cauline +
recurved +
scarious +
2-carpellate +
inferior +
attached +
anatropous +
absent +
tough +
thick +
absent +
connate +
persistent +
distinct +
herbaceous +
falling +
erect +
ovate +
subequal +
equal +
Bot. Gaz. +
1904 +
absent +
epaleate +
foveolate +
conic;usually flat;convex +
fibrous +
white;stramineous +
exalbuminous +
modifed +
1;2 +
Endemic +
straight +
squarrose +
alternate +
pannose +
2-branched +
glabrous +
papillate +
Tetradymia axillaris +
Tetradymia +
species +
dilated +
longer +