Populus fremontii subsp. mesetae
J. Arnold Arbor. 58: 201, fig. 2B. 1977.
Common names: Plateau cottonwood álamo cimarron
Synonyms: Populus deltoides var. mesetae (Eckenwalder) Cronquist
Plants to 20 m. Branchlets, leaf-blades, and petioles usually densely hairy, hairs (soft) yellowish. Neoformed leaves: blade rhombic-ovate, longer than wide, base cuneate or truncate, apex long-acuminate. Capsules 5–8 (–10) mm.
Phenology: Flowering Feb–Apr; fruiting Apr–Jun.
Habitat: Stream banks, canyons, seeps, springs, pools, moist soils
Elevation: 800-2400 m
Distribution
Tex., Mexico (Chihuahua), Mexico (Coahuila), Mexico (Mexico), Mexico (Nuevo León), Mexico (Puebla)
Discussion
Subspecies mesetae forms groves and local patches along major streams, otherwise primarily in arroyos and canyons in foothills, and also is commonly planted near ranches and in towns. It intergrades with subsp. fremontii along a line from southeastern Arizona south along the boundary between Chihuahua and Sonora.
Selected References
None.
Lower Taxa
None.
... more about "Populus fremontii subsp. mesetae"
at right angle;plane +
truncate +
dehiscent +
long-acuminate +
absent +
furrowed +
pale tan +
absent +
longer than wide +
crenate-serrate +
neoformed +
toothed +
3/5;1/1 +
rhombic-ovate +
white +
not ciliate +
pistillate +
deciduous +
coarse +
round +
slender +
separated +
resinous +
yellowbrown +
flowering +
hairy +
winter +
2-4-valved +
glabrous +
spherical +
(10-)15-25(-35)-flowered +
pendulous +
arillate +
entire +
oblique +
cup-shaped +
absent +
scant +
distinct +
slender +
caducous +
distinct +
subtending +
capsular +
arillate +
yellowish +
long +
silky +
fasciculate +
racemose +
flowering +
year-round +
simple +
marcescent +
deciduous +
neoformed +
translucent +
crenate-serrate +
2-4-carpelled +
1-7[-10]-locular +
axile +
parietal +
spherical +
2;25 +
absent +
absent +
modified +
not glandular +
absent +
hairy +
3/5;3/4 +
flattened +
fused +
intruded +
J. Arnold Arbor. +
1977 +
not evident +
layering +
9;15 +
absent +
deep +
Illustrated +
40;60 +
not spinose +
erect;pendent +
glabrescent;pubescent +
truncate +
convoluted +
2;4 +
plate-like +
expanded +
absent +
distinct +
pistillate +
yellowish green +
Populus fremontii subsp. mesetae +
Populus fremontii +
subspecies +
heterophyllous +
37 cm370 mm <br />0.37 m <br /> (?) +