Amphiachyris amoena
Rhodora 62: 52. 1960.
Common names: Texas broomweed
Endemic
Basionym: Xanthocephalum amoenum Shinners Field & Lab. 19: 77. 1951 Gutierrezia amoena (Shinners) Diggs Lipscomb & O’Kennon
Treatment appears in FNA Volume 20. Treatment on page 88.
Plants 20–40 (–60) cm. Primary-stems usually (2–) 5 mm diam. Leaf-blades linear, rarely linear-lanceolate, 5–25 (–35) × 0.2–1 (–2) mm. Heads in open paniculiform arrays. Phyllaries 3–4 × 1–2 mm. Receptacles with hooked, swollen-based hairs. Cypselae 2–3 mm, 4–6-ribbed, long-setulose. 2n = 8.
Phenology: Flowering late Sep–Oct.
Habitat: Calcareous soils and gravels on or near limestone outcrops
Elevation: 0–650 m
Discussion
Selected References
None.
Lower Taxa
None.
... more about "Amphiachyris amoena"
introrse +
connate +
distinct +
herbaceous +
scarious +
hirsute +
papillate +
continuous +
decurrent +
linear;lanceolate +
ribbed +
stigmatic +
persistent +
absent +
Texas broomweed +
drying +
absent +
monomorphic +
4-6-ribbed +
dimorphic +
long-setulose +
obovoid-turbinate +
plump +
2mm;3mm +
staminate +
staminate +
Tex. +
straight +
resinous +
whitish;gland-dotted +
long +
short-setulose +
distinct +
proximal +
1;5 +
bisexual +
dispersed +
swollen-based +
hooked +
singly +
indeterminate +
surrounding +
narrowly campanulate;turbinate +
linear-lanceolate +
0.2mm;1mm +
sessile +
alternate +
cauline +
erect +
deltate +
hyaline +
2-carpellate +
inferior +
attached +
anatropous +
coroniform +
tough +
thick +
absent +
connate +
1-nerved +
persistent +
distinct +
falling +
proximal +
ovate +
unequal +
Rhodora +
1960 +
pistillate +
absent +
fertile +
epaleate +
flat;slightly convex +
fibrous +
exalbuminous +
modifed +
1;2 +
Endemic +
alternate +
branched +
erect +
2-branched +
glabrous +
Amphiachyris amoena +
Amphiachyris +
species +
cylindric +
shorter +
annual +