434 
TETRADYNAMIA SILICULOSA. Draba. 
glaleUa, 
Icon. FI. dan. 142. Liljehlad nov. act. ups. 6. t. 2.f. 2, 
In Labrador. Colmaster. ©• May.[y. s. in Herb. Dickson. 
4. D. scapo subbifolio erecto, foliis spathulato-lanceolatis 
glabriusculis. racemo densifioro, siliculis ovato-lanceo- 
latis acLitis. 
In Hudson’s Bay, O* v. s. in HctI. Banks. 
incana. 
5. D. foliis caulinis uumerosis incanis, piiis irnplexis stella- 
tis, siliculis oblongis obliquis stylo brevissimo mucro- 
natis. — IVilld. sp. pi. 3. p. 430. 
Icon. FI. dan. 130. Engl. hot. 388. Pluk. aim. t. 42. 
f 1. 
In Labrador, (^ . May, June. v. s.in Flerh. Lamheri. 
arahlmns. 
(5. D. caule folioso subramoso, foliis radicalibiis cuneato- 
lanceolatis, caulinis lanceolatis^ omnibus acutis diva- 
ricato-dentatis, siliculis stylo acuminatis. — Mich. Ji. 
amer. 2.p. 26. 
On rocks, near the banks of rivers : Canada to Virginia, 
c^. May, June. v. v. I collected specimens on the 
rocks near Harper’s Ferry, Virginia. 
argenteum. 
\ 
521. MYAGRUM. Gen. pi. IO 69 . 
1 . M. undique cano-tomentosum j siliculis oblongis pedun- 
culatis tomentosis, foliis lineari-spathulatis sensim at- 
tenuatis integerrimis, petalis obovatis. 
On the banks of the Mi.ssouri. g . v. s. Flowers yel- 
low j the wliole of the plant has some resemblance to 
Alpssum iaxatik. 
mariimia. 
522. CAKILE. GcerGsem.2.p.2S7. 
1 . C. foliis pinnatis, pinnis linearibus subdentatis. Willd. 
sp. pi. 3. p. 416 . 
Bunias Cakile. Sp. pl.gsG. 
Icon. Engl. hot. 231 . 
On the sea-coast; Canada to Virginia. O* Jt-dy, Aug. 
V. V. Flov/ers purple. 
h^perloreum. 
523. ALYSSUM. Gen.pl. 1081. 
] . A. caulibus herbaceis, foliis incanis dentatis, staminibus 
4 . bifurcatis. Willd. sp. pi. 3. p. 463. 
Icon. Krasihen. act. peir. 1747 . t. 15. f. 1. 
On the north-west coast, -f . 
