668 



MONOECIA TRIANDRIA. 



Sp. pi. 4. p. 336. Pursh, 2. p. 623. Nutt. 2. p. 206. Mich.'art. for. 



3. p. 320. . 



BetulaSerrulata, Mich. 2.p. 181. ' 



A shrub eight to twelve inches high, with many crooked, rather rigid 

 branches. Leaves alternate, oliovate, or ovate, at the summit slightly acu- 

 minate, doubly serrulate, nearly glabrous on the upper surface, strongly 

 veined and pubescent underneath. Stij)utes oval or ovate, generally obtuse. 

 Sterile flowers in a long pendulous ament. Fertile in an ovate cone near 

 the base of the sterile. Styles two? Seed compressed. 



Grows along the margin of water courses, very common. 



' Flowers during the winter while destitute of leaves. 



BOEHMERIA. Gen. Pl. 1421. 



Masculi Calyx 4 



partitus 



Corolla 0. 



Nectarium 0. 



Slerile fjoreis 



lyx 4-parted. 

 0. Nectary 0. 



Ccu 

 Corolla 



Foeminei Calyx 0. Fertile florets 

 Corolla 0. Stylus 1/ lyx 0. Con 



Semen 1. 



Style 1. 



Corolla 0. 

 Seed 1. 



1. Cylindrica. 



Lin. 



B. foliis oppositis, 

 ovato-oblongis, aciimi- 

 natis, dentatis, glabris; 



Leaves opposite 



? 



0- 



floribus dioicis 



5 



spicis 



masculis glon^eratis, in 

 terruptis, foemineis cy 

 lindricisj caule herb a 



vate-oblong^aciiramate. 

 toothed, glabrous; flow- 



ers 



dioecious; 



s 



terile 



spikes dustered, inter- 



rupted, 



fertile spikes 



cylindrical; stem 



her 



ceo. 



baceous. 



Sp. pl. 4. p. 340. Pursh, 1. p. ] 12. Nutt. 2. p. SOf. 

 Uitica Cylindrica, Walt. p. 230. Mich. 2. p. 179. 



Stem two to four feethieh, obtusely four-anded, elabroi 



Uatt^ ovate, 



Flowers 



fonn 



long. 



Grows in shaded wet soils. 

 Flowers — June to August. 



