27 



FOUR SOUTHWESTERN PLANTS. 



AquiIvEGIa deSERTORUM (Jones) Cockerell. 



D. T. MacDougal's No. 327, collected in Walnut Canon, 

 near Flagstaff, Arizona, July 23, 1898, which grew "in clefts 

 and on ledges of limestone cliffs," is evidently of this species. 

 It was distributed by me as a new species. Marcus E. Jones 

 first collected it at Flagstaff, August 29, 1884, "growing in 

 crevices of rocks near springs." 



At the time the determination was made, I had no species 

 at hand to which the plant could be referred, and overlooked 

 the then recently published Aquilegia formosa var. desertotum. 

 Jones, Cont. West. Bot. 8: 2. 1898. The plant was named as a 

 species in 1900 by Professor T. D. A. Cockerell, in "The South- 

 west," a journal published at the Normal School, Albuqueruqe, 

 New Mexico. 



Draba viridis 



Perennial? much branched from the root: stems slender, 

 i5-25cm. high, simple or sparingly branched above, green, scab- 

 rous, the short hairs both simple and stellate, leafy up to the 

 inflorescence: leaves i-2cm. long, 3-7mm, wide, thin but firm, 

 deep green in the dried state, ovate or ovate-lanceolate, acutish, 

 or the uppermost acute, sessile, roughened by a short, stellate 

 pubescence: calyx green, pubescent with short scattered hairs, 

 the lobes oblong, obtuse, 2mm. long: corolla yellow, the petals 

 oblong, twice the length of the calyx: pedicels slender, ascend- 

 ing, bearing a twisted pod of equal length, which is pubescent, 

 or nearly glabrous when mature, tipped with a slender style 

 nearly 2mm. long. 



The type specimen in the herbarium of Columbia Univer- 

 sity, was collected by Dr. T. E. Wilcox, at Fort Huachuca, Ari- 

 zona, July, 1893. This species is easily separated from its rel- 

 atives by the slender, almost simple stems, and the remarkable 

 green of the stem, leaves and calyx. 



