434 TETRADYNAMIA SILICULOSA. Draba. 
Jeon. Fl. dan. 142. Liljeblad mov. act. ups. 6. t. 2. f. 2. 
In Labrador. Colmaster. ©. May fv. s. in Herb, Dickson. 
glatella, 4. D. scapo subbifolio erecto, foliis ‘spathulato-lanceolatis 
: glabriusculis, racemo densifloro, siliculis ovato-lanceo- 
latis acutis. Pese 
In Hudson’s Bay, ©. v.s.in Herb. Banks. à 
incana, 5. D. foliis caulinis numerosis incanis, pilis implexis stella- 
tis, siliculis oblongis obliquis stylo brevissimo mucro- 
natis.— Willd, sp. pl. 3. p. 430. 
Icon. Fl. dan. 130. Engl. bot. 388. Pluk. alm. t. 42. 
fil, 
In Labrador. &. May, June. v. s.in Herb. Lamlert. 
aralisans, 6. D. caule folioso subramoso, folis radicalibus cuneato- 
lanceolatis, caulinis lanceolatis, omnibus acutis diva- 
ricato-dentatis, siliculis stylo acuminatis.— Mich. Jt. 
amer. 2. p. 28. 
On rocks, near the banks of rivers : Canada to Virginia, 
d. May, June. v.v. I collected specimens on the 
rocks near Harper's Ferry, Virginia, — — 
+ 
521. MYAGRUM. Gen. pl. 1069. 
argenteum. — 1. M. undique cano-tomentosum ; siliculis oblongis pedun- 
culatis tomentosis, foliis lineari-spathulatis sensim at- 
tenuatis integerrimis, petalis obovatis. 
On the banks of the Missouri. g. v.s. Flowers yel- 
low ; the whole of the plant has some resemblance to 
Alyssum saxatile. 
522. CAKILE. Gert; sem. 2. p. 287. 
maritima, 1. C. foliis pinnatis, pinnis linearibus subdentatis, Willd. 
sp. pl. 3. p. 416. 
Bunias Cakile. Sp. pl. 936. 
Icon. Engl, bot. 231. 
On the sea-coast: Canada to Virginia, ©. July, Aug. 
v. v. Flowers purple, x 
523. ALYSSUM. Gen.pl1081. > 
hyperloreum, 1. A. caulibus herbaceis, foliis incanis dentatis, staminibus 
4. bifurcatis. Willd. sp. pl. 3. p. 463. 
* Icon. Kraschen. act. petr. 1747. t. 15. f. 1. 
On the north-west coast, +. ied 
