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160 
cylindrica. 
pumila. 
MONOECIA, TETRANDRIA. 
Betula Alnus, Sp. Pl. 1394. 
icon. Engl. Bot. 1508. 
Alder-tree. 
On the banks of creeks and other waters; rare. h. April. 
350, BOEHMERIA. Gen. pl. 1421. (Urtice.) 
Masc. Calix 4-parted. Corolla none. Nec- 
tary none. Kem. Calix and corolla none. 
Seed 1, compressed.—WVutt. 
i. B. leaves opposite, ovate-oblong, acuminate, 
dentate, glabrous ; flowers dioicous ; male spikes 
glomerate, interrupted, feminine cylindrical ; 
stem herbaceous.— Willd. 
Urtica cylindrica, L. and Mich. 
Icon. Sloan. Hist. Jam. 1. t. 82. f. 2. 
An ordinary looking plant, from eighteen inches to two feet 
high. In shady places along the margins of water courses; not 
rare. Perennial. June, July. 
551. URTICA. Gen. pl. 1422. (Urtice.) 
Masc. Calia 4-leaved. Corolla none. Nec- 
tary central, mostly cyathiform. Fem. Ca- 
lia 2-valved. Corolla none. Seed 1, shin- 
ing.—WVutt. 
1, U. leaves opposite, ovate-acuminate, three-ner- 
ved, serrated ; lower petioles the length of the 
leaves; fiowers monoicous, triandrous, capi- 
tate-corymbose, shorter than the petiole.— Wiild. 
Pellucid Nettle. Rich Weed. 
A common looking plant, varying in size from two inches to 
fifteen. Leaves and stem shining, smooth, pellucid. Near 
springs and rivulets; in shady damp places, and in moist woods 
near water-courses; every where abundant. Perennial. August. 
