ON NYMPH.EACE.'E. 123 



name, calling' the plant Brasenia ni/mphoides. This is certainly the " priority " name, 

 as is confirmed by Planchon, " tide specim. ex Irerb. Liigd. Batav. in herb. Mus. Paris., 

 — non Linn." But iii/mjilioides as a specific term surely belouii's to the Villarsia, and, as 

 an old generic name of Tournel'ort (although not now usually spelt with a cajDital N), 

 and even tor no other reason than to avoid further confusion, may well be restricted to 

 its own genus, which has also had at least four other names in addition to Villarda. 

 The hrst correctly applied specific term for our plant is peltala. The generic name 

 Brasenia goes back to 1789. In Kees's Cyclopœdia, Sir James Smith remarks that Dr. 

 Solander had made a genus of the plant, Ixodia, but the name of Michaux, Hijdropeltix, 

 having been printed, was properly retaiiu'd by Dr. Sims. The generic name Ixndia was 

 alterwards given by R. Brown to a New Holland composite plant. 



Mr. Joseph Schrenk has published, in the Torrey Bulletin, (XV, pp. 29-4T, Pis. 57 

 and 5S) the results of a very careful and elaborate study of the vegetative organs of this 

 plant, with precise and clear descriptions and drawings, to which I woirld invite the 

 attention of students as a model that may be imitated Avith advantage in like investi- 

 gations. 



GiCNtis VIII.— CABOMBA, Aublet. 



Cabomba. " Aubl. PI. Gruiau." Beuth. & Hook., Grenera Plantarum, I, p. 40. 



C. Caroliniana, Gray. Wats., Bibl. Index, p 36, (with synonymy). C. aquatica, 

 DC, Syst. Nat., I, p. 36. 



Southern States of North America and Central America. 



