familyAsteraceae
genusAcamptopappus
Difference between revisions of "Acamptopappus sphaerocephalus"
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.
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Revision as of 21:27, 16 December 2019
Leaf faces glabrous or hirtellous. Heads in loose, corymbiform arrays. Involucres hemispheric to globose, 7–10 mm wide. Rays 0.
Distribution
sw United States.
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.
Lower Taxa
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 |