Croton pottsii var. thermophilus

(M. C. Johnston) M. C. Johnston

SouthW. Naturalist 5: 171. 1960.

Common names: Desert leatherweed
Conservation concern
Basionym: Croton corymbulosus var. thermophilus M. C. Johnston SouthW. Naturalist 3: 187. 1959
Synonyms: C. thermophilus (M. C. Johnston) B. L. Turner
Treatment appears in FNA Volume 12. Treatment on page 222. Mentioned on page 221.

Stems somewhat zigzag; erect radii of stellate hairs longer than lateral radii, thus pubescence appearing ± shaggy. Leaf-blades usually 1–1.4 cm. Racemes mostly 0.5–0.9 cm. Styles usually 0.5–1 mm. Capsules 4 mm.


Phenology: Flowering Jul–Oct.
Habitat: Basalt and limestone hills.
Elevation: 700–1800 m.

Discussion

Variety thermophilus is restricted to Brewster County and nearby Mexico.

Selected References

None.

Lower Taxa

None.

"connate" is not a number. "distinct" is not a number.

stellate-hairy +  and glabrous +
straight +
rounded;acute +
Benjamin W. van Ee +  and Paul E. Berry +
(M. C. Johnston) M. C. Johnston +
rounded +
Croton corymbulosus var. thermophilus +
1 cm10 mm <br />0.01 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
ovate-elliptic;ovate-oblong +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
4 cm40 mm <br />0.04 m <br /> (?) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Desert leatherweed +
Tex. +  and Mexico (Coahuila) +
700–1800 m. +
pistillate +  and staminate +
subtending +
Basalt and limestone hills. +
pubescence +
scale-like +  and stellate +
axillary +  and terminal +
unisexual +  and bisexual +
palmate +  and pinnate +
colorless +  and reddish +
deciduous +, semideciduous +  and persistent +
palmate +  and pinnate +
denticulate +  and crenate +
extrastaminal +
pistillate +  and staminate +
0.1 cm1 mm <br />0.001 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
pale green +  and white +
list;count;distinct +
oblong-lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering Jul–Oct. +
(1-)3-carpellate +
SouthW. Naturalist +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
lenticular +, globose +, ovoid +, oblong +  and ellipsoid +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
valvate +  and imbricate +
distinct +  and connate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Conservation concern +
caducous +, deciduous +  and persistent +
connate +  and distinct +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (?) +  and 0.1 cm1 mm <br />0.001 m <br /> (?) +
pale +  and ashy green +
stellate-hairy +
C. thermophilus +
Croton pottsii var. thermophilus +
Croton pottsii +
variety +
dioecious +  and monoecious +
14 +, 10 +, 9 +  and 8 +