202 MONOECIA. TRIANDRIA. 



Species. 1. C. vulgaris. 2. foliolosa. o. fexilis. — A 

 genus principally indig-enous to Euiope and India. 



Order IL— DIANDRIA. 



629. PODOSTEMUM. Michanx. 



Calix and corolla none. Stamina 2, affixed to 

 a common pedicell. Germ ovate. Stigma l, 

 sessile. Capsule 2-celled, 2-valved, many-seed- 

 ed. Seeds minute. 



A small demersed coriaceous aquatic, growing- attached 

 to rocks and stones; leaves multipartite, setaceous; flow- 

 ers solitary, pedicellate. 



Species. P. Ceratophyllum. Mich. t. 44. Pluk. Phyt. t. 

 138. f. 1 ? llAB In the Delaware, about Eastun.— Z. Col- 

 lins, esqr. In the Ohio, Holston, Kenhaway, French 

 Broad, and in the Catawba river, near Morganton, North 

 Carolina, v. v. — Capsule pedicellate, roundish, marked 

 with 8 grooves. 



Order. IlL— TRIANDRIA. 



630. TYPHA. i. (Reed-mace, Cat's-tail.) 

 Masc. Jlment cylindiir. Calix obsolete, 3- 



leaved. Corolla none. Fem. flowers below the 

 masculine. Calix and corolla none. Seed I, 

 pedicellate, furnished with a pappus at the base. 



Aquatics: leaves very long- and linear; culm without 

 nodes terminating' in a dense cylindric spike. 



Species. 1. 1 . latifolia. 2. angustifolia. Both spe- 

 cies also indigenous to Europe, where Uiere are likewise 

 2 others. 



631. SPARGAMUM. L, (Bur-rced.) 



Jlment globose. Calix 3 to 6-leaved. Stigma 

 simple or bifid. JWt suberose, 1 celled, 1 or 2- 

 8eeded. 



