£02 MOXOECIA. TRIANDRIA. 



Species. 1. C. vulgaris. 2. foliolosa. 3- Jlexilis.—A 

 genus principally indigenous to Europe and India. 



Order II.— DIANDRIA. 



629. PODOSTEMUM. .Michaux, 



Calix and corolla none. Stamina 2, affixed to 

 a common pedicell. Germ ovate. Stigma 1, 

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

 ed. Seeds minute. 



A small demersed coriaceous aquatic, growing attached 

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

 ers solitary, pedicellate. 



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

 138. f. 1 ? II A B In the Dehiware, about Easton.— Z.'Col- 

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

 BroiAd, and in the C;:tH\vba nver, near Morganton, North 

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

 with 8 grooves. 



Order. III.— -TRIANDRIA. 



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

 Masc. Ament cviindiic. Ca/io: obsolete, 3- 



leaved. Corolla none. Fem. flowers below the 

 masculine. Calix and corolla none. Seed 1, 

 Jiedicellate, furnished with a pappus at the base. 



Aquatics: leaves very long and linear; culnn without 

 nodes ternjinating in a dense cylindric spike. 



Species. 1. 'I . latifolin. 2. angnstifolin. Both spe- 

 cies also indigenous to Europe, where there are likewise 

 2 others. 



631. SPARGAMUM. i. (Bur-reed.) 



Jiment ^hhoHQ, Cflto 3 to 6-Ieaved. Stigma 

 simple or bifid, ^-ut suberose, 1 -celled, 1 or 2- 

 seeded. 



