Proc. Amer. Acad. Arts7: 355. 1868
sw United States, nw Mexico.
Species 2 (2 in the flora).
See discussion of Filagininae following the tribal description (p. 385).
Ancistrocarphus is found in temperate Mediterranean to semiarid climates. It consistently resolved as the sister of Hesperevax in phylogenies based on morphology (J. D. Morefield 1992). Ancistrocarphus is not closely related to Stylocline, where it has been placed based on sharing saccate, winged pistillate paleae. The pistillate paleae of Ancistrocarphus differ from those of Stylocline and all other Filagininae in having two prominent lateral nerves in addition to the (sometimes obscure) medial one.
Addition of Ancistrocarphus keilii made the genus more heterogeneous and somewhat bridged the gap with Hesperevax. That species may be derived from a common ancestor of, or a hybrid between, the two genera. It shares most of its character states with A. filagineus; the two species consistently resolved as sister taxa in all phylogenetic analyses (J. D. Morefield 1992).
|1||Stems (1–)2–10; leaves basal and cauline; staminate paleae 2.7–4.1 mm, surpassing pistillate, broadly lanceolate, apices uncinate, acuminate, spinose; cypselae 1.4–2 × 0.6–0.9 mm, transverse bands 1; pistillate paleae: wings prominent, ovate||Ancistrocarphus filagineus|
|1||Stems 0; leaves basal; staminate paleae 1.8–2.8 mm, slightly surpassed by pistillate, broadly spatulate, apices incurved, obtuse to rounded, apiculate, not spinose; cypselae 1–1.4 × 0.5– 0.6 mm, transverse bands 0; pistillate paleae: wings obscure, lanceolate||Ancistrocarphus keilii|
|Author||James D. Morefield +|
|Common name||Groundstar +|
|Etymology||Greek ankistros, fishhook, and karphos, chaff, alluding to staminate paleae of type species +|
|Illustrator||Linny Heagy +|
|Synonym||Stylocline Ancistrocarphus +|
|Taxon name||Ancistrocarphus +|
|Taxon parent||Asteraceae tribe Gnaphalieae +|
|Taxon rank||genus +|
|Volume||Volume 19 +|