saiviniej;. cxxix. 



§ 2 Saitihie^. 



183. SALVINIA, Micheli, Gen. 107, t. 58; Sehreh. Q-en. 

 riant. 1617. 



Spore-cases (ConceptaclesJ clustered in short distielious cymes 

 terminating short leafless branches on the tmder side of the 

 stems; thin, globular, bursting irregularly, one-celled, containing 

 bodies of two kinds : (1) omiheriMa, consisting of numeroas 

 minute spherical vescicles, borne on branching pedicels from a 

 central receptacle, and full of small spores ; (2) oophoridia, con- 

 sisting of larger bodies, short stalked, on a central receptacle, 

 each including a single large spore. 



Moating branched plants, with sessile entire imbricated, cel- 

 lular leayes above, the fructifications growing on short leafless 

 branches from the under side of the stems, surrounded by long 

 rootlets. 



Ex. : S. natans, Soffm. | S. oMongifolia, Mwrtius. 



184. AZOIiIiA, LamarcJc, Encyc. Sot. i. 340. 



CABPA2TTHUS, Saji/nesque ; Bhizospeema, Meyer. 



Spore-oases (ConceptaclesJ binate on short branches at the 

 base of the pinuse, on the under side of the stems, one-celled, of 

 two kinds: (1) antheridia, consisting of ovate-oblong bodies, 

 opening transversely, and containing several roundish angular 

 spores on a central erect column j (2) oophoridia, consisting of 

 globose bodies, bursting irregularly, and containing spherical 

 vescicles rising from the base on slender stalks, each containing 

 globular hairy spores. 



Floating pinnately-branched plants, with minute cellular im- 

 bricated leaves, the fructifications growing on short branches 

 which proceed from the imder surface of the stem at the base of 

 the pinnae. 



Ex. ; A. filiculoides, Zam. 

 A. pinnata, R, Br. 

 A. caroliniana, Willd. 

 [October, 1668.] 



A. miorophylla, Zlfi. 

 A. rubra, R. Br. 

 A, a&icana, Desv. 



