CRUCIFERAE. 



Vol. II. 



7. Cardamine bellidifolia L. Alpine Cress. 

 Fig. 2089. 



Cardamine bellidifolia L. Sp. PI. 654. 1753. 



Perennial, tufted, glabrous, 2'-$' high, with fibrous roots. 

 Lower leaves long-petioled, ovate, obtuse, the blades 4"-8" 

 long, 3"-4" broad, abruptly contracted into the petiole, entire, 

 or with a few rounded teeth ; upper leaves similar, shorter- 

 petioled; flowers 1-5, white; petals about twice the length of 

 the calyx; pods erect, linear, f'-ii' long, 1" wide, narrowed 

 at each end; pedicels i"-3" long; style stout, less than i" long. 



Alpine summits of the White Mountains, N. H. ; Mt. Katahdin, 

 Me. ; Greenland and arctic America ; the Canadian Rocky Moun- 

 tains ; California. Also in Europe and Asia. July. 



8. Cardamine Douglassii (Torr.) Britton. 

 Purple Cress. Fig. 2090. 



Arabis rhomboidea var. purpurea Torr. Am. Journ. 



Sci. 4: 66. 1822. 

 Arabis Douglassii Torr. ; T. & G Fl. N. A. i : 83. 



As synonym. 1838. 

 Cardamine Douglassii Britton, Trans. N. Y. Acad. 



Sci. 9: 8. 1889. 

 C. purpurea Britton, in Britt. & Brown, 111. Fl. 2 : 



139. 1897. 



Glabrous or somewhat pubescent, generally 

 slender, 6'-i5' high, perennial by tuberiferous 

 rootstocks. Basal leaves slender-petioled, about 

 i' broad, ovate or orbicular, cordate, thickish ; 

 lower stem-leaves similar, but short-petioled, the 

 upper sessile, mostly close together, dentate or 

 entire; pedicels 4"-i2" long; flowers purple, 

 showy, 5"-io" broad; pods nearly erect, l' long, 

 i" broad, pointed at each end; pedicels 4"-i2" 

 long; style 2" long. 



■In cold springy places, Quebec and arctic Amer- 

 ica to the Canadian Rocky Mountains, south to 

 Maryland, Kentucky and Wisconsin. Blooming two 

 or three weeks earlier than the next, and more 



abundant northward. 

 May. 



Mountain water-cress. April- 



9. Cardamine bulbosa (Schreb.) B.S.P. 

 Bulbous Cress. Fig. 2091. 



Arabis bulbosa Schreb. ; Muhl. Trans. Am. Phil. Soc. 



3: 174. 1793- 

 Cardamine rhomboidea DC. Syst. Veg. 2: 246. 1821. 

 Cardamine bulbosa B.S.P. Prel. Cat. N. Y. 4. 1888. 



Perennial, glabrous, erect from a tuberous base, 

 with tuber-bearing rotstocks, simple or sparingly 

 branched above, 6'-2° high. Basal leaves oval, or 

 nearly orbicular, i'-i4' long, sometimes cordate, 

 angled or entire, long-petioled ; stem-leaves sessile 

 or the lower petioled, mostly distant, oblong or 

 lanceolate, dentate or entire, i'-2' long; pedicels 

 4"-i2" long; flowers white, s"-7" broad; petals 

 three or four times the length of the calyx; pods 

 l' long, erect, linear-lanceolate, narrowed at each 

 end; style i"-2" long; stigma prominent; seeds 

 short-oval. 



In wet meadows and thickets, Nova Scotia(?); 

 Vermont to southern Ontario and Minnesota, south 

 to Florida and Texas. Ascends to 2000 ft. in Vir- 

 ginia. Spring-cress. April-June. 



