Thymophylla pentachaeta var. hartwegii
Sida 11: 377. 1986.
Basionym: Hymenatherum hartwegii A. Gray Smithsonian Contr. Knowl. 3(5): 117. 1852
Synonyms: Dyssodia hartwegii (A. Gray) B. L. Robinson Dyssodia pentachaeta var. hartwegii (A. Gray) Strother
Treatment appears in FNA Volume 21. Treatment on page 242.
Leaves 12–34 mm overall, lobes 3–7, unequal (terminal lobes usually notably longer than laterals). Peduncles 2–5 cm. Calyculi of 3–5 bractlets. Involucres cylindric, 3–5 × 2–3.5 mm. Phyllaries ca. 13, margins of outer distinct 1/3 or less their lengths, abaxial faces sparsely puberulous, often glabrescent. Disc florets 16–40. Pappi of 5 erose scales alternating with 5, 1–3-aristate scales.
Phenology: Flowering early spring and late summer, following rains.
Habitat: Calcareous outcrops and bluffs, deserts
Elevation: 1500–2500 m
Distribution
Ariz., N.Mex., Tex., Mexico.
Discussion
Selected References
None.
Lower Taxa
None.