Acamptopappus sphaerocephalus

(Harvey & A. Gray) A. Gray
Proc. Amer. Acad. Arts 8: 634. 1873.
Common names: Rayless goldenhead
Basionym: Haplopappus sphaerocephalus Harvey & A. Gray Mem. Amer. Acad. Arts, n. s. 4: 76. 1849 (as Aplopappus)
Treatment appears in FNA Volume 20. Treatment on page 185.
Revision as of 21:27, 16 December 2019 by FNA>Volume Importer

Leaf faces glabrous or hirtellous. Heads in loose, corymbiform arrays. Involucres hemispheric to globose, 7–10 mm wide. Rays 0.

Discussion

Varieties 2 (2 in the flora).

The two varieties were mapped as geographically intermingling in southern California (M. A. Lane 1988). Considerable variation in expression of vestiture occurs in the area where the hirtellous-leaved plants grow and identifications should be recognized as arbitrary.

Selected References

None.

Key

1 Leaf margins and faces hirtellous Acamptopappus sphaerocephalus var. hirtellus
1 Leaf margins and faces glabrous, or margins sometimes hirtellous Acamptopappus sphaerocephalus var. sphaerocephalus