Aphanostephus skirrhobasis var. kidderi
Phytologia 56: 94. 1984.
Basionym: Aphanostephus kidderi S. F. Blake Contr. Gray Herb. 53: 23. 1918
Treatment appears in FNA Volume 20. Treatment on page 352.
Plants (10–) 15–35 cm. Stems erect to decumbent, hirsuto-pilose and/or puberulent, hairs (0.2–) 0.5–1.2 mm. Leaves not strongly thickened or felty gray-hairy. Ray-florets 1–9–40. Pappi of acute or awn-tipped or setiform scales 0.4–2 mm. 2n = 6.
Phenology: Flowering Mar–Jun(–Aug).
Habitat: Sandy or gravelly soils, often in matorral and scrublands
Elevation: 0–50 m
Distribution
Tex., Mexico (Tamaulipas)
Discussion
Apparent intergrades between var. kidderi and var. skirrhobasis are relatively common. There is a greater tendency in Aphanostephus skirrhobasis for leaves to be lobed or pinnatifid over the whole stem than in the other species.
Selected References
None.
Lower Taxa
None.
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introrse +
connate +
distinct +
herbaceous +
scarious +
hirsute +
papillate +
continuous +
bulbous-swollen +
indurate +
1-nerved +
broadly oblanceolate;linear-lanceolate +
ribbed +
stigmatic +
persistent +
absent +
absent +
monomorphic +
4-12-thick-ribbed +
dimorphic +
staminate +
straight +
distinct +
proximal +
1;5 +
bisexual +
dispersed +
coiled +
singly +
indeterminate +
surrounding +
depressed-hemispheric +
alternate +
thickened +
erect +
deltate +
scarious +
purplish +
broad +
2-carpellate +
inferior +
attached +
anatropous +
persistent +
absent +
coroniform +
uneven +
tough +
thick +
absent +
connate +
1-nerved +
persistent +
appressed +
distinct +
falling +
ovatelanceolate +
Phytologia +
1984 +
pistillate +
absent +
fertile +
epaleate +
pitted +
conic +
fibrous +
awn-tipped +
connate +
exalbuminous +
modifed +
1;3;4 +
alternate +
branched +
deltate +
2-branched +
glabrous +
Aphanostephus skirrhobasis var. kidderi +
Aphanostephus skirrhobasis +
variety +
tubular +
taprooted +
annual +