602 



DICLINIA SEGREGATE. 



I. SEGREGATE. 



681. VALLISNERIA. Gen. pi Ug\. 



V. foliis linearibus, pednnculis masculis femineisque 

 rectis. JVilld. sp. pi. 4. p. 651. Mich.Ji.avier. 2. 

 p. 220. 



At the bottom of muddy and slow-flowing rivers : Mis- 

 sissippi and St. John's, Florida. Mickaux. In Os- 

 wego river, New York ; Delaware, Pensylvania, and 

 James's and Greenbri'ar rivers, Virginia. Ph. 11 . 

 $ ? Aug. -Oct. V. V. Tliis most interesting and 

 singular plant I observed in the Delaware, near 

 Philadelphia, in 1800; which discovery 1 commu- 

 nicated, accompanied with a drawing and description, 

 to Dr. B. S. Barton, of Philadelphia. The ceconomy 

 of its fecundation is highly interesting to the young 

 student of the sexual system. Michaux and Willde- 

 now consider it as specifically distinct from F. spira- 

 lis ; but I have always considered it only a local va- 

 riety, as the peduncles of the female flowers are in 

 deep water really spiral. 



683. NAJAS. JVilld. act. acad. lerol.'ijgS, p. 85. 



naiustissime lineari- 



canadensis. l.N. pusilla, filiformis, Isevis j foliis 

 bus. Mich.Ji. amer. 2. p. 220. 

 In lakes ; Canada, on Lake St. John's 



Michaux. 



6S3. DIOTIS. Gen. pi. 1.123. 



lanala, 1. D. omnibus partibus cano-tomentosa ; caule flexuoso, 



glomerulis hpicarum confertissimis. 

 On the banks of tlie Missouri, in open prairies. M. 

 Lewis. Fj . Aug. Sept. v. s. in Herb. Lewis. Re- 

 sembles Diotis ceratoides, but is distinct at first sight 

 by its long woolly tomentum. 



684. RICINUJ. Gen.pl.lAQA. 



tomviunis. 1. R- fohis peltatis palmatis, lobis lanceohitis serratis, caule 

 herbaceo pruinoso, stigmatibus tribus apice bifidis, 

 capsulis echinatis. jyHld. sp. pi. 4. p. 564. 

 Icon. Blackw. t. 14S. 



