162 SYNOPSIS OF THE FLORA OF THE 



B. nigi'a, Boissier. Black Mustard. 



Introduced from Europe. In cultivated grounds, around barns and manure 

 heaps. Around old barns in the Counties of Prince Edward and Hastings 

 (Macoun). Gardens and waste places, Quebec (Brunet). New Brunswick (Dr. 

 Fowler). Prescott (Provancher). 



Draba, L. WMtlow Grass. 

 D. alpina, L. Alpine "Whitlow Grass. 



Indigenous. Dwarf, 2' — 4' high ; rather rigid ; scapes naked, mostly some- 

 what hirsute ; leaves spatulate-obovate or spatulate-lanceolate, nearly veinless, 

 more or less pilose, with branching hairs ; petals yellow, more than twice the 

 length of the calyx ; silicles glabrous (in our specimens) or pubescent, some- 

 what corymbed, oblong-elliptical ; styles very short. 



Rocky coast of Labrador (Brunet). Shore of Sturgeon Lake, Dawson route 

 (Macoun). Rocky Mountains, lat. 48° N. (Bourgeau). Melville Island, Arctic 

 Sea coast, Kotzebue's Sound (Torr. & Gray). July. 



D. Canadensis, Brunet. Canada Whitlow Grass. 



Indigenous. " Legereruent pubescente a jjoils 6toil6s ; tige fenilee, ordinaire- 

 ment simple ; feuilles radicalss aigues, lancaolees, attenuees a la base, generale- 

 ment entieres quelquefois munies au sommet de deux dents lat6rales ; feuilles 

 caulinaires oblongues et dent6es ; fieurs blanches ; en grappe simple ; petales 

 echancres au sommet plus longs que le calice ; silicules ovales-elliptiques, 

 longues de 4 ci 5 douzi^mes de pouce, raremeut contourm^es ; pedicelles inf6- 

 rieurs deux fois plus long que la silicule, pedicelles superieurs plus courts." — 

 Catalogue des Plantes Canadiennes, par L'Abbe Ovide Brunet, Quebec, 1865. 

 Crevices of rocks, St. Joachim, Cap Tourmente, Quebec. 



D. arabisans, Miclix. Arabis-like Whitlow Grass. 



Indigenous. Lsd'ges of rock, river banks, and lake shores. North shore 

 of Lake Superior (Agassiz and Pitcher). Rocky Mountains (Bourgeau). July. 



D. incana, L. Yar. contorta, Ehrh. 



Indigenous. Coast of Labrador, on rocks (Brunet). Islands of the St.. 

 Lawrence (Torr. & Gray). Uimlaska and Arctic America (Hooker). Cariboo, 

 Labrador (Butler). Vicinity of Montreal (Provancher). 



D. nemorosa, 'L. 



Indigenous. Rocks and sandy grounds. On sands at the mouth of the 

 Michipicotin River, July 26, 1869. This is undoubtedly the same Draba found 

 by Agassiz at the same place some tv/enty-live years ago. Reported from. 

 Port Huron, and will therefore in all probability be found on the sandy plains 

 of Sarnia, on the Canada side. This is probably the D. muralis reported 

 from the vicinity of Montreal by Hooker, Fl. Bor.-Am. I. p. 56. Upper 

 British Columbia and Peace River (Macoun). 



D. Caroliniana, Walt. Yar. umbellata, Torr. & Gray. 



Indigenous. Dry calcareous soils. Ox Point and vicinity of Belleville, Hast- 

 ings Co. ; abundant at Ferry House, opposite Belleville ; Grape Island, at the 

 head of the Bay of Quinte, Ont. (Macoun). Amlierstburg, Ont. (Maclagan). 



D. verna, L. Whitlow-grass. 



Probably introduced. Fields and hillsides in the vicinity of Quebec (Brunet). 

 Cap Tourmente (Provancher). 



