NOTES ON THE GENUS NAJAS. , 441 



spreading firmer leaves, fimbriate leaf-sheath, and the pair of terminal outgrowtlis on the 

 female spathe. 



Described from a plant in Herb. Cosson (Paris), collected by Lcpricur ; no locality is 

 given, but it is doubtless from Senegal. 



5. Najas madagascariensis, Rendle in Trans. Linn. Soc. ser. 2, Bot. v. i02 (1899). 

 The following extends the range of this species, hitherto known only from Mada- 

 gascar : — 



Mauritius— River Moha (B. K. Johnston). 



Bourbon— St. Benoit (De Vlsle, no. 563), St. Paul (Be Vhle, no. 1 tl), both in lIcM-b. 

 Cosson (Paris). 



§ 2. Americana^. 



7. Najas flexilis, Eostk. & Schm. PI. Sedin. 382 (1824) ; Rendle in Trans. Linn. 

 Soc. ser. 2, Bot. v. 403 (1899). 



I have noted the following additional localities : — 



Europe — Pomerania, Stettin ; Lithuania, Lake Switez {Dybowski in Woloszczak, Fl. 



Polon. cxsicc. no. 783). 

 The second specimen gives an interesting south-eastern extension of the species. 

 North America — Labrador {Lamar ic-Ficquot in Herb. Paris) ; Buffalo {Clinton) ; 



Chicago {Taylor) ; Long Island (Miller); Pennsylvania (Bischoff). 



Tar. ROBUSTA, Morong, in Coult. Bot. Gaz. x. (1885) 255, et in IMem. Torr. Bot. Club, iii. 

 no. 2 (1893), 60 ; Rendle in Trans. Linn. Soc. ser. 2, Bot. v. 404 (1899). 



I had not seen specimens of this variety when my revision was published, and suggested 

 that it might perhaps be a form of 3\ microdon, A. Br. Through the kindness of 

 Professor Trelease I have just received two small specimens from Morong's Herbarium 

 now at the Missouri Botanical Garden. They were collected at Pine Lake, Clinton Co., 

 Michigan, and have every appearance of a robust form of .V. flexilis. 



1 should describe the leaves, which are strongly ascending, as linear-tapering rather than 

 jsimply linear. The specimens are sterile, as stated by Morong. 



9. Najas microdo:n% A. Br. in Sitzungsb. Ges. Naturf Fr. Berlin, 1868, 17; Rendle 

 in Trans. Linn. Soc. ser. 2, Bot. v. 405 (1899). 

 I have noted the following additional localities : — 

 North America— Nebraska (Bydberg, no. 1786) ; Missouri, St. Louis ; Fossds de 



rOhio (Lesquereux in Herb. Boissier). 

 West Indies— St. Domingo (Bertero in Herb. Paris, Poiteau in Herb. Delessert). 

 South America— French Guiana (Leprieur in Herb. Paris) ; Venezuela, " Laguna 



Puria? bei Victoria " (X«;'*^^« iu Herb. Mus. Palat. Vindob.) ; " locis fl. Amaz. 



stagnantibus, Ega" (Boppig iu Herb. Mus. Palat. Vindob.). 



13. Najas conferta, A. Br. in Sitzungsbcr. Gcs. Naturf . Fr. Berlin, 1868, 17 ; Rendle 

 in Trans. Linn. Soc. ser. 2, Bot. v. 409 (189.0). 

 Additional locality : — 

 French Guiana — [Leprieur). 



