New or rare Plants of the State of New York. 223 
CRUCIFER^. 
5. Nasturtium natans, De Cand. Syst.ll,]). 198; Prodr. 
I. p. 139. De Less. Ic. 11. tab. 15. 
/3. Americanum ; petalis calyce duplo longioribus ; siliculis 
obovatis. N. natans, HooJc. Fl. Bar. Am. I. p. 39. Beck. Bot. 
Northern and Middle States, p. 32. 
Hab. Oneida Lake, where it is very abundant, in water 
2 — 5 feet deep. In the St. Lawrence river, near Ogdensburgh, 
Dr. I. B. Crawe. Flowers in July. 
Obs. This plant, which I observed at the first mentioned 
locality several years since, differs in some respects from the 
Siberian N. natans, as described by De Candolle and figured 
by De Lessert. In our specimens the flowers are about twice 
as large as those of N. am]jkihium, the petals are imre white in 
the living plant, oblong, and twice the length of the calyx, the 
mature silicles obovate or obovate-oblong, more than 2 li7ie$ in 
length; but in all other respects they agree minutely with De 
Candolle's detailed description and De Lessert's figure. The 
submersed leaves separate with great ease at their articulation 
with the stem, so that perfect specimens are not readily obtained. 
Although a rare plant, its geographical range is quite extensive, 
as Dr. Ingalls has recently found it at New Orleans. 
6. Draba incana, Linn. Sj>. PI. p. 897. Hook. Fl. Bor. 
Am. I. p. 54. D. contorta, Ehrh. De Cand. Syst. II. p. 348. 
Prodr. I. p. 170. D. confusa, Ehrh. De Cand. I. c. Hook. 
Fl. Bor. Am. I. c. 
13. GLABRiuscuLA ; laevitcr substellato-pubescens ; foliis 
radicalibus spathulato-lanceolatis, caulinis oblongis, repando- 
dentatis ; siUcuUs oblongo-linearibus. D. glabella, Pursh. Fl. 
I. p. 344 .? Hook. Fl. Bor. Am. I. p. 54 ? 
Whole plant covered with a minute, branched pubescence, but not 
hoary. Root perennial ! Stems many from the same root, simple or 
a little branching from the base. Radical leaves numerous and 
crowded, forming a roseolate tuft, oblong or lanceolate spathulate, 
much attenuated at the base, sparingly dentate. Cauline leaves oblong 
Vol. III. 29 
