Flora of North America species comparison

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Croton pottsii var. pottsii

Croton pottsii var. thermophilus
Photo is of parent taxon

encinilla, leatherweed
Photo is of parent taxon

desert leatherweed, leatherweed
Stems

straight;

erect radii of stellate hairs shorter than lateral radii, thus pubescence appearing appressed and smooth.

somewhat zigzag;

erect radii of stellate hairs longer than lateral radii, thus pubescence appearing ± shaggy.
Leaf

blades 1.6–6 cm.

blades usually 1–1.4 cm.
Racemes

mostly 1.1–2.5 cm.

mostly 0.5–0.9 cm.
Styles

1.1–4.5 mm.

usually 0.5–1 mm.
Capsules

4–6(–7) mm.

4 mm.

Croton pottsii var. pottsii

Croton pottsii var. thermophilus
Phenology Flowering May–Oct. Flowering Jul–Oct.
Habitat Desert scrub, arid plains, rocky slopes. Basalt and limestone hills.
Elevation 700–2000 m. (2300–6600 ft.) 700–1800 m. (2300–5900 ft.)
Distribution
from FNA
AZ; NM; TX; n Mexico; c Mexico
[BONAP county map]
from FNA
TX; Mexico (Coahuila)
[BONAP county map]
Discussion

Variety thermophilus is restricted to Brewster County and nearby Mexico.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 12, p. 222. FNA vol. 12, p. 222.
Parent taxa Euphorbiaceae > Croton > Croton pottsii Euphorbiaceae > Croton > Croton pottsii
Sibling taxa
C. pottsii var. thermophilus
C. pottsii var. pottsii
Synonyms C. corymbulosoides, C. corymbulosus C. corymbulosus var. thermophilus, C. thermophilus
Name authority unknown (M. C. Johnston) M. C. Johnston: SouthW. Naturalist 5: 171. (1960)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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