Aphanostephus skirrhobasis var. kidderi

(S. F. Blake) B. L. Turner

Phytologia56: 94. 1984

Basionyms: Aphanostephus kidderi
Found 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


Tex., Mexico (Tamaulipas).


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.



AuthorGuy L. Nesom +
BasionymAphanostephus kidderi +
Elevation0–50 m +
HabitatSandy or gravelly soils, often in matorral and scrublands +
IllustratorBarbara Alongi +
PhenologyFlowering Mar–Jun(–Aug). +
ReferenceNone +
Taxon nameAphanostephus skirrhobasis var. kidderi +
Taxon parentAphanostephus skirrhobasis +
Taxon rankvariety +
VolumeVolume 20 +