462 Rydberg: Studies on the Rocky Mountain flora 



mm. long, 1.5 mm. in diameter; lobes cuneate, merely emarginate 

 with a broad sinus, dark violet, about 3 mm. long; stamens in- 

 serted in the middle of the corolla-tube; capsule about 6 mm. long. 



This species is related to P. farinosa L. and P. incana M. E. 

 Jones, but differs from both in its very thin leaves, more exserted 

 corolla-tube and slender bracts. In P. incana M. E. Jones (P. 

 americana Rydb.), the only other species of the group in the Rocky 

 Mountains, the bracts are thick, almost fleshy, obtusish, lanceolate, 

 and often nearly equaling the pedicels. In the bracts and inflor- 

 escence, it resembles more P. farinosa L. of Europe and north- 

 eastern America. P. Ellisiae of the Sandea Mountains of New 

 Mexico, though belonging to this group and of the same habit, 

 has much larger flowers, the lobes of the corolla being 8-10 mm. 

 long. P. specuicola grows only in loose soil, under overhanging 

 cliffs in the alcove-like heads of the canyons, characteristic of the 

 limestone bluffs of San Juan River. 



Utah: Along San Juan River, near Bluffs, Aug. 25-29, 191 1, 

 Rydberg 9882 (type, in herb. N. Y. Bot. Gard.) ; same locality, 

 Feb., 1912, Edna Scorup, and in 1895, Alice Eastwood. 



Androsace albertina Rydb. sp. nov. 



Cespitose perennial, but scarcely pulvinate; leaves narrowly 

 oblanceolate, about 1 cm. long, sparingly ciliate, not carinate; 

 scape 5-10 cm. long, slender, sparingly hairy; bracts linear- 

 lanceolate, 3-4 mm. long; pedicels 3-5 mm.; calyx-lobes elliptic, 

 obtuse; corolla-lobes 2-3 mm. long. 



This is most like the European A. Chamaejasme Host, but 

 the leaves and bracts are narrower. It differs from A. carinata 

 Torr. in the narrower leaves, not carinate beneath, less pulvi- 

 nate habit, longer peduncles, longer pedicels, and smaller flowers. 



Alberta: Lake Agnes, National Park, Banff, Aug. 1897, 

 Mr. and Mrs. C. Van Brunt 77 (type, in herb. N. Y. Bot. Gard.); 

 Jumping Pound Creek, June 14, 1897, Macoan 23478; Rocky 

 Mountains 1858, Bourgeau. 



Montana: Yellow Mountain, June 24, 1897, R. S. Williams. 



Androsace simplex Rydb. sp. nov. 



Annual; leaves oblanceolate, 3-6 mm. long, acute, entire, 

 minutely puberulent; scape usually solitary, erect, very slender, 

 2-7 cm. high; bracts oval or lance-oval, 2-4 mm. long; pedicels 



