(5) A. BENNETT. POTAMOGETONES OF THE HERBARIUM BOISSIER. 253 



given by I)' Morong Mon. p. 18. I liave seen spécimens from Porto-Rico, 

 and Jamaicà. 



13. P. coloratus Horn. in FI. Dan t. 1449 (1813). 



Generali) supposée! to be reslricled to Europe, in the herberium is a 

 speciman of P. pkmtaginem Du Croz. var. jamaicensis, Griesb. froni Ja- 

 maica (il bas since been gathered on Ilog island), which belongs hère, it 

 also occurs (not qui le the type) in Socolro. An Australian plant I once 

 referred hère. I now doubl, and believe it to bave been a form of my 

 P. Cheesemanii. 



14. P. alpinus Balb. Mis. Bot. 13 (1804). 



A curions spécimen which is labelled « P. rufescens Schrad var. » ga- 

 ihcied in Colorado. U. S. may be the P.Faxoni Morong, which I had sug- 

 gested niighl be an hybrid; ie rufescens X Claytonii, but which D r Mo- 

 rong would rallier (if an hybrid) consider rufescens X lonchites. The 

 first spécimens D r M. sent me were very like what such a product should 

 be if what f suggesled; but later spécimens certainly rainer point to D r 

 Mornong's view. 



15. P. heterophyllus Schreber Spic. F. Lips. 21 (1771) var.? 

 myriophyllus Robbins. Is certainly a very odd form of this protean 

 species, Ihe herberium examples are fairy représentée, my own herb, 

 contains a beautifull set from D 1 Morong. 



16. P. varians Morong olim. = P. spathulœformis Morong. Mon. 

 p. 26. 



A very interesling plant known only in one spot in Mass. United 

 States, where it has never been observed to fruit; and in Cambridge 

 England, where il fruits, but not very feely. D 1 ' Morong coincided in the 

 opinion of M. Fryer, and myself that Ibère two plants are substantially 

 identical. What is wanted is that the English plants should be grown in 

 America, and vica versa, the resuit would be of much interest both from 

 the specific point, and from that of the hybrid theory. 



17. P. capensis Scheele in herb Buchenau. 



I believe this to be the same as P. Thunbergii Cham. Linna?a 2. 221 

 (1827), P. natans Thunb. Prod. 32 (1794) leste Chamisso le, but not 

 having seen n. sp. nained by Chamisso I cannt aflïrm il is so. And I bave 

 seen no spécimen in fruit of capensis, the plant belongs to a séries near 

 P. indiens Roxb., having the upper leaves natans like, and the lower 

 lucens like. 



17. P. lucens L. 



In bis Flora of British India, Sir J. D. Hooker under this species 



