" but 
RYDBERG: STUDIES ON THE Rocky Mountain Frora 241 
British Cotumsia: Summit of Rocky Mountains, 1890, John 
Macoun (type in herb. Columbia University). 
/ Draba Parryi sp. nov. 
Annual, perfectly glabrous, except a few cilia on the petioles : 
stems several, usually less than 1 dm. high, scapiform or rarely 
with a stem leaf: basal leaves numerous, linear or narrowly linear- 
oblanceolate, 1.5—2.5 cm. long; pedicels spreading, in fruit 5-8 
mm. long: flowers small ; petals scarcely 2 mm. long, white or 
light yellow: pods erect, oblong, 5-8 mm. long, 1.5-2 mm. wide, 
glabrous : style obsolete. 
This is closely related to D. crassifolia but the latter has 
broader leaves, which are more or less hirsute on the surface and 
distinctly ciliate on the margins. 
CoLorapo: Foot of Gray Peak, 1872, E& L. Greene (type in 
herb. Columbia University); 1872, C. C. Parry; Cameron Pass, 
1896, C. F. Baker. 
Wyomine : Telephone Mines, 1900, Aven Nelson, 7879. 
’ Draba cana sp. nov. 
Perennial with a taproot and short cespitose caudex, whole 
plant densely grayish stellate ; stem 1-2 dm. high, often branched : 
al leaves numerous, oblanceolate or spatulate, I-1.5 cm. long, 
entire or minutely but sharply toothed, densely stellate; stem 
leaves lanceolate to ovate, about 1 cm. long: racemes many-flow- 
ered ; pedicels short, nearly erect, in fruit 2-3 mm. long: flowers 
small; petals white, about 3 mm. long: pod linear-oblong, 6-8 
mm. long, densely pubescent : style about 5 mm. long. 
This has gone under the name of D. zzcana, but the latter is 
much less densely stellate and has a glabrous, much broader pod. 
T have seen only one specimen of true D. ivcana from this conti- 
nent, and it was collected in Labrador. Most of those under this 
name belong to D. cana, which ranges from Labrador to the 
Yukon Territory, south in the mountains to Colorado. The fol- 
lowing is regarded as the type. 
ALBERTA : Morley, foothills of the Rocky Mountains, 1887, 
John Macoun (herb. Columbia University). 
’Draba McCallae sp. nov. 
Perennial with a cespitose base, whole plant sparingly stellate 
§reen : stems several, simple, about 3 dm. high: basal leaves 
