CATALOGUE. 63 



style also) aurea. I must, however, say that the fruit is in no instance so 

 much twisted as in the original specimens on which streptocarpa was founded. 

 That differences sufficient to constitute distinct species exist between the 

 extreme forms, no one will probably deny. It is equally certain that they 

 shade into each other until at times all tests are doubtful and justify a place 

 under either name. In this instance, I have named as streptocarpa all speci- 

 mens having leaves " beset and especially ciliate, with long and rigid, 

 shaggy, spreading, simple or simply forked hairs, far more bristly than in 

 D. aurea, and with no fine stellular pubescence intermixed." I rely more on 

 this character in deciding between interloping specimens than on any other. 



Draba incana, L., var. confusa, Hook.— I have from Colorado (num- 

 ber mislaid) a plant similar to herbarium specimens that are authentically 

 named, and that bear the above name. 



Draba Montana, Watson. — "Annual, hoary- villous, with simple or 

 branching rigid hairs, rather stout, erect, simple or sparingly branched 

 from near the base, becoming a span high or less ; leaves rosulate and 

 rather crowded at and above the base of the stem, oblanceolate and oblong- 

 lanceolate, acutish, sparingly toothed, half an inch long or less ; flowers 

 small, the yellow or yellowish petals 1-1 £" long, exceeding the sepals; 

 pods linear-oblong, obtusish, roughly puberulent, about 4" long, nearly 

 erect upon the spreading pedicels, which are 2" or 3" long ; style none.— 

 Collected in Colorado by Hall and Harbour, without number; in South 

 Park by Wolf (637), and near Empire by Eev. E. L. Greene. It is distin- 

 guished from D. nemorosa by its stouter and less branching habit and its more 

 erect pods on stouter pedicels, and from D. stenoloba by its stouter habit, 

 greater pubescence, and somewhat broader and obtuser pods." — Watson, MS. 



Draba nemorosa, L., var. lutea, Gray. — Georgetown, Colo. Stems 

 less leafy and pedicels shorter. (628.) 



Numbers 635 and 636 of the Colorado collection I had named D. 

 nemorosa, L., var. crassifolia, Watson, from the resemblance to Draba crassi- 

 folia, Graham, in Hall and Harbour's 1862 collection. Brewer and Watson 

 (Fl. Cal. 1, p. 28) speak of this, however, as having a naked and scape- 

 like stem, whereas my specimens are leafy. I therefore leave them simply 

 under I), nemorosa, L. 



