familyAsteraceae
genusAcamptopappus
Acamptopappus sphaerocephalus
Proc. Amer. Acad. Arts 8: 634. 1873.
Common names: Rayless goldenhead
IllustratedEndemic
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 20:46, 29 July 2020 by imported>Volume Importer
Leaf faces glabrous or hirtellous. Heads in loose, corymbiform arrays. Involucres hemispheric to globose, 7–10 mm wide. Rays 0.
Distribution
Ariz., Calif., Nev., Utah
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 |
"[" is not declared as a valid unit of measurement for this property.
... more about "Acamptopappus sphaerocephalus"
introrse +
connate +
distinct +
herbaceous +
scarious +
hirsute +
papillate +
corymbiform +
continuous +
decurrent +
1-nerved +
spatulate;obovate;lanceolate +
ribbed +
stigmatic +
persistent +
absent +
Rayless goldenhead +
yellow +
absent +
monomorphic +
dimorphic +
staminate +
straight +
eglandular +
distinct +
proximal +
1;5 +
bisexual +
dispersed +
indeterminate +
surrounding +
hemispheric;globose +
alternate +
cauline +
reflexed +
lanceolate +
hyaline +
lacerate +
not evident +
2-carpellate +
inferior +
attached +
anatropous +
persistent +
subequal +
thick +
tough +
thick +
absent +
connate +
1-nerved +
persistent +
appressed +
distinct +
falling +
unequal +
Proc. Amer. Acad. Arts +
1873 +
pistillate +
absent +
fertile +
absent +
epaleate +
pitted +
flat;slightly convex +
fibrous +
setiform +
exalbuminous +
modifed +
1;2 +
shorter +
alternate +
erect +
triangular-lanceolate +
2-branched +
glabrous +
Acamptopappus sphaerocephalus +
Acamptopappus +
species +
longer +