Ulmus crassifolia

Nuttall

Trans. Amer. Philos. Soc., n.s. 5: 169. 1837.

Common names: Cedar elm
Treatment appears in FNA Volume 3.

Trees, 24-27 m; crowns rounded to narrow. Bark light-brown with shallow ridges and large plates. Wood hard. Branches often with opposite corky wings; twigs reddish-brown, pubescent. Buds brown, apex acute, pubescent; scales dark-brown, shiny, glabrous. Leaves: petiole ca. 1.5 mm, pubescent. Leaf-blade ovate to elliptic, 2.5-5 × 1.3-2 cm, base oblique or rounded to cuneate, margins crenate to doubly serrate, apex obtuse; surfaces abaxially softly pubescent, adaxially harshly pubescent. Inflorescences fascicles, 2-5-flowered, 0.5 cm; pedicel 0.75-1 cm. Flowers: calyx deeply lobed, more than 1/2 its length, lobes 6-9, hairy; stamens 5-6, anthers reddish purple; stigmas white, pubescent, exserted and spreading. Samaras green to tan, elliptic to oval, ca. 0.75-1 cm, pubescent, margins ciliate, cilia ca. 0.5 mm. Seeds somewhat thickened, not inflated. 2n = 28.


Phenology: Flowering late summer–early fall.
Habitat: Stream banks, low woods, low hillsides, roadsides, waste places, sometimes shade trees
Elevation: 0-500 m

Distribution

V3 172-distribution-map.gif

Ark., Fla., La., Miss., Okla., Tenn., Tex., n Mexico

Discussion

Except for the Suwanee River valley in Florida, Ulmus crassifolia has not been found east of Webster County, Mississippi. It hybridizes with U. serotina.

Selected References

None.

Lower Taxa

None.

"/" is not declared as a valid unit of measurement for this property.

... more about "Ulmus crassifolia"
reddish purple +
longitudinal +
obtuse +  and acute +
Susan L. Sherman-Broyles +
Nuttall +
light-brown +
smooth +  and deeply fissured +
rounded;cuneate +
slender;stout +
1 cm10 mm <br />0.01 m <br /> (?) +
thick-walled +
0.5 cm5 mm <br />0.005 m <br /> (?) +
Cedar elm +
rounded +
subsessile +  and pedunculate +
Ark. +, Fla. +, La. +, Miss. +, Okla. +, Tenn. +, Tex. +  and n Mexico +
0-500 m +
curved +  and straight +
absent;scanty +
sigmoid +  and curved +
distinct +  and free +
sessile +  and pedicellate +
Stream banks, low woods, low hillsides, roadsides, waste places, sometimes shade trees +
0.5 cm5 mm <br />0.005 m <br /> (?) +
pinnate +  and palmate-pinnate +
2.5 cm25 mm <br />0.025 m <br /> (5 cm50 mm <br />0.05 m <br />) +
ovate;elliptic +
distichous +  and alternate +
deciduous +
pinnate +, serrate +  and doubly serrate +
crenate +  and doubly serrate +
amphitropous +, anatropous +  and pendulous +
0.75 cm7.5 mm <br />0.0075 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (?) +
Flowering late summer–early fall. +
2(-3)-carpellate +
Trans. Amer. Philos. Soc., n.s. +
subsessile +  and pedunculate +
shallow +
elliptic;oval +
0.75cm +  and 1cm +
not inflated +
valvate +  and imbricate +
persistent +
hypogynous +
persistent +
distinct +
2-lobed +
Ulmus crassifolia +
species +
reddish-brown +