PENTANDRIA. DIGYNIAs a 
white and Sarbaxnecne scales, Male flowers naked, 
terminal, Calix inflated, whitish, and membranaceous, 
somewhat globose-campanulate, entire to the orifice; ex- 
ternal dentures greenish, small and obtuse; internal 
’ longer and acute, at first incumbent upon the stamens, 
afterwards nearly erect, deltoid and acute. Stamina 5, 
. ‘ exserted, partly combined at the base, ye capil- 
‘ Jary; anthers at first fulvous, at length, after dehis- .— 
j 
cenee, bifid at either extremity. Has. In sterile and 
saline places, near the Missouri; abundant near Fort 
Mandan, &e. Flowering in May. - I have never seen” _ 
any but male plants, and am unaequainted with the seed. 
It resembles a small Atriplex or Chenopodium, in its leaves, — 
and terminal conglomerated flowers. 
__ ‘Yo this genus have been referred by its founder some — 
of the species of Salsola, 
287. ULMUS. Z. (Elm.) = 
Calix eampanulate, 4 or 5-cleft. Corolla: none. 
_ Samara} compressed, encompassed by a mem- 
Fetes hed alated border. (Stamina pamginnts 
4 and also 8.) 
_.__ Trees or rarely shrubs; leaves retrorsely aipbiite, oles: 
— oblique at the base; flowers fasciculate, conglomerate, 
_ appearing before the leaves. 
Specizs. “1. U. americana. 2. nemoralis. 3. fulva, 
(Slippery Elm.) 4. alata. Leaves much smaller than | 
those of any other American species. Has. In Tennessee 
and Virgin a of the French Broad river, and in Carolina 
Of eis e there are 3 species in Europe, 1 in Sibe-. 
ria, 1 in arses pepe sf Sit See aS 
