ULMACEAE 441 
(SEPTEMBER-ELM.)—Rich ravines and bluffs, Appalachian and Interior Low 
plateau provinces, Ga. to Ala. and Tenn.—Fall. 
3. U. alata Michx. Tre e becoming 20 m. tall, the branches often corky- 
winged: leaf-blades RP elliptic or broadly pde or rarely broader, 
2—10 em. long, E smooth above; petioles 1.5-3 mm. long: calyx deeply 
lobed: samara elliptie, 6-8 mm. long, p the x wings A and 
longi ate.—(W. INGED-E ELM. AHOO. RED WATER-ELM. CORK-ELM.)— 
River banks, Ti and woods, Coastal Plain and "adj. provinees, Fla. to 
Tex, Kans., .„ and Va.—Spr. 
4, U. floridana Chapm. Tree becoming 20 m. tall, the branches not corky- 
winged, the twigs glabrous: leaf-blades mainly clliptie , oval, or ovate, 3-12 
em. long, ipd smooth &bove; petioles 6—10 mm. long: ie shallowly lobed: 
samara ovate -— mm. long, short- ‘stipitate, the wings merely long- 
E mE .)—Swamps and low hammocks, Coastal Plain, Fla. 
t 
5. U. americana L: Tree becoming 40 m. tall, the: ie ursi not corky- winged, 
the twigs typically pubescent: leaf-blades oval to ovate, 5-10 cm. long, some- 
times rough-pubescent above; petioles 4—7.5 mm. i flower-clusters lax: 
Ec : 
merely long-cilia —(WHITE-ELM. | ÁMERICAN-ELM. OMMON-ELM. ROCK- 
ELM.)—Moist t woods, river-banks, and low grounds, often calcareous, various 
provinces, N Fla. to Tex., Sask., Ont., and Newf.—Early spr. 
6. U. fulva Michx. Tree becoming 25 m. tall, the twigs densely aed dede 
the inner bark mucilaginous: leaf-blades ovate- oval or obovate, 8—19 cm. long, 
Md on both sides: flower-clusters dense: samara suborbicular, 
14— in diameter, finely pubescent, "ciliate s LIPPERY-ELM. RED-ELM 
Eur zu CK-ELM. ADU R —Rich, often rocky woods and xen 
various provinces, W Fla. to Tex., N. D., and | Que. — Early Spr.—The fragrant 
mucilaginous inner bark is used in medi cine 
2. PLANERA J. F. Gmel. Trees, with scaly bark. Leaves deciduous: 
blades toothed. Calyx campanulate. cy short-stipitate, tubercular. Nut- 
e fruit irregularly warty. One spec 
1. bo b pue (Walt.) J. F. Gmel. Tree 
| Pd m. tall: eat blades ovate or 
liptieor ov 3-8 cm. long, rrate or, 
renulate- ans short- Br NEM ealyx 
lóbes ovate, obtuse: fruit ovoid, about 1 
em. lo ong, Lo stalked, the processes soft. 
ip Hor Solr ae — Swamps 
and m is subje to considerable 
uc uan of e. Dun 1 Plain, N Fla 
d 
with water dur several months of each 
year. However, its greatest "deu d 
in the higher ‘ands of western Louisiana and southern Arkansas. 
3. CELTIS [Tourn.] L. Unarmed shrubs or trees, the ~ often warty. 
l 
Leaves deciduous: blades entire or toothed, very inequilateral Calyx rotate, 
the lobes much longer than the tube. Stigmas 2, entire. Dus subglobose.— 
