170 • ' ■ NAIADES. . [Bitppia, 



8. TYPHA. Z. 



I. T. latifolia. L.—PL Am, I. p. 34. E. BoL t 1455. Rich. App, p, 34. 



Hab. Throughout Canada to Fort Franklin. Br Richardson. N. W. Coast, Straits of de Fuca. Dr 

 Scouler.—l have not seen the T. angustifolia, L., from British N. America, but it seems not uncommon in 

 the United States. 



Ord. V. SAURURE^. Richard, 



1. SAURURUS. L 



1, jS. cernuus, L, — PL Am. 1. p. 252. 



Hab. Canada. Ph, ; but I have seen no specimen. 



Ord. VL NAIADES. Juss. 



1. NAIAS. Z. 



1. N, Canadensis (Mich. Am, 2. p. 220) ; parva repetitim dichotome ramosa caespi- 

 tosa, foliis fasciculatis oppositis membranaceis linearibus uninerviis subintegerrimisj stylo 

 apice bi-trifido. (Tab. CLXXXIV.)— PA. Am. 2. p. 602. 



Hab, Canada Qm Lake St John's. Michaux). Mr Cleghorn, — A densely tufted plant, readily distin- 

 guished from the European species of the same genus, by the nearly entire leaves and the often bifid style. 

 My specimens are female only. It is singular that this plant does not appear to be found by any of the United 

 States botanists. I do not know what the Caulinia fragilis and flexilis of the American Floras are, unless 

 the latter be, as I suspect, the n. 436 of Drummond, 3d Coll. of Texas plants ; but our plant does not corre- 

 spond with that. 



Tab. CLXXXIV. Fig. 1. Portion of a female plant; / 2, Leaf; /. 3, Female flower; / 4, Fruit ; 

 f. 5, The same laid open, showing the seed : — magnified. 



{Zosfera is a native of the United States, but I am not aware that it has been gathered in the British 

 possessions, though there is every reason to suspect its existence there ; and probably that of the Caulinias 

 too, especially in Upper Canada.) 



2. ZANNICHELLIA. Z. 



L Z.palustris. L. — Ph. Am, \, p. 4. E. Bot. t. 1844. 



Hab. N. W, America. Columbia River. Dr Scouler. 



3. RUPPIA. L. 



1. R. maritima. L — Ph. Am, h p, 121. E. BoL t. 136. 



Hab. N. W. America. In still bays of the Columbia. Douglas, Dr Scouler, 



