28 1 ] FLORA OF BOULDER, COLORADO 133 



493. D. Fladnizensis Wulf. WHITE ARCTIC WHITLOW-GRASS. 

 Above timberline, Arapahoe Peak, 1100013000 ft. (Daniels, 



1009). 



LABRADOR to BRITISH COLUMBIA ; COLORADO to UTAH : EU- 

 ROPE: ASIA. 



494. D. cana Rydb. HOARY WHITLOW-GRASS. 

 Massif de T Arapahoe, 11000-12000 ft. (Rydberg). 

 LABRADOR to YUKON and COLORADO. 



495. D. streptocarpa Gray. TWISTED-PODDED WHITLOW-GRASS. 

 Common in barren, rocky places throughout the mountain- 



ous region 6000-13000 ft. (Daniels, 313). Also Eldora to 

 Baltimore (Rydberg). Sugarloaf, 8500 ft. (Cockerell). 

 COLORADO to NEW MEXICO and ARIZONA. 



496. D. luteola Greene. YELLOWISH WHITLOWWORT. 



In spray of Boulder Falls, a decumbent small-flowered form, 

 7500 ft. (Daniels, 295). Also Eldora to Baltimore (Rydberg). 

 COLORADO. 



497. D. aureifonnis Rydb. [D. Bakeri Greene]. BAKER'S 



WHITLOW-GRASS. 



Above timberline, Arapahoe Peak, 11000-12000 ft. (Daniels, 

 1004). 

 SOUTH DAKOTA to COLORADO. 



498. D. aurea Wahl. GOLDEN WHITLOWWORT. 



Common in the subalpine and alpine district, 8600 ( Eldora) - 

 13000 (Arapahoe Peak) ft. (Daniels, 805). Also Eldora to 

 Baltimore (Rydberg). 



GREENLAND to BRITISH COLUMBIA; COLORADO to ARIZONA. 



499. D. decumbens Rydb. DECUMBENT WHITLOWWORT. 



At snow-line, Arapahoe Peak, 12000-13000 ft. (Daniels, 



COLORADO. 



200. CARDAMINE L. BITTERCRESS. 

 500. C. cordifolia Gray. HEART-LEAVED BITTERCRESS. 



Wet mossy tundras above timberline, Arapahoe Peak, nooo- 

 12000 ft. (Daniels, 713). Also mountains between Sunshine 



