North American Polygdnaceae. 46 



I have the following specimens before me : California, near 

 Rose mine, San Bernardino Mountains, altitude 2100 meters, June 

 17, 1894, no. 3170, S. B. Parish ; Oregon, Powder River Moun- 

 tains, altitude 2,500 meters, August 7, 1896, W. C. Cusick. 



Eriogonum rosulatum. 



Perennial, dwarf, canescent-tomentose. Stems much branched ; 

 branches densely tufted, forming matted cushions : leaves in densely 

 crowded rosettes; blades ovate or suborbicular, 2-5 mm. long, 

 obtuse, thick, closely tomentose, abruptly narrowed or truncate at 

 the base; petioles shorter than the blades, dilated at the base : in- 

 volucres sessile, or at maturity on scapes 1-1.5 cm. long, broadly 

 turbinate, 3 mm. high, villous tomentose ; segments about as long 

 as the tube, unequal, lanceolate to ovate, obtuse: calices pink to 

 vinous, 2.5-3 mm. long, glabrous, contracted into a short stipe-like 

 base ; segments firm, the inner and outer nearly equal, cuneate, 

 retuse at the apex, especially the inner 3 : filaments short, glabrous : 

 achenes 3-angled, 2.5 mm. long, glabrous. 



At high altitudes, near Mineral King, Sierra Nevada, California. 

 Summer. 



One of the few species in which the peduncle is wanting, or 

 almost wanting, at least during the flowering period. The species 

 is related to E. marifolium , the leaves resembling those of that form. 

 The plants form compact cushions several centimeters in diameter, 

 on account of the many short branches and the very densely 

 imbricated leaves. The retuse calyx-segments, the glabrous fila- 

 ments and glabrous achenes all serve to distinguish the two 

 species. 



The type specimens were gathered near Mineral King, in the 

 Sierra Nevada Mountains, on the Death Valley Expedition, by 

 Mr. F. V. Coville and Mr. F. Funston. Number 1549. 



Eriogonum polypodum. 



Perennial, from a shrubby base. Foilage densely canescent- 

 tomentose : stems much branched ; branches spreading radially : 

 leaves thick, crowded ; blades loosely ovate to suborbicular, obtuse, 

 revolute, sometimes glabrate above, abruptly narrowed or cordate 

 at the base ; petioles stout, shorter than the blades : scapes num- 

 erous, erect, 5-15 cm. tall, simple below, topped by a 3-6-rayed 

 umbel, or a head : involucres sessile or their peduncles 1-5 mm. 

 long, turbinate, 3-4 mm. high ; segments 5-7, usually 6, oblong, 

 obtuse, spreading: calices glabrous, about 3 mm. long; segments 



