126 PORTULACACEAE. 



Carson ; Mt. Bartlett ; Robinson ; mountains near Empire ; Massif de 1'Arapa- 

 hoe ; Lake City; headwaters of Clear Creek; mountains northwest of Como; 

 Boreas; Devil's Causeway; Berthoud Pass; Ethel Peak. 



3. LIMNIA L. SPANISH LETTUCE. 



i. Limnia depressa (A. Gray) Rydb. (Claytonia parvMora depressa A. 

 Gray) On river banks and near springs from S. D. to Wash., Colo., Ariz, 

 and Calif. Reported from Colorado, but doubtful. 



4. CRUNOCALLIS Rydb. WATER SPRING BEAUTY. 



i. Crunocallis Chamissonis (Esch.) Rydb. (Claytonia Chamissonis Esch.) 

 In streams from Minn, to B. C, N. M. and Calif. Alt. 5000-10,000 ft. Rabbit- 

 Ear Pass; Beaver Creek; Long Gulch; Ward, Boulder Co.; Middle Park; 

 Green Mountain Falls ; North Park ; Empire ; Moon's ranch, Larimer Co. ; 

 Empire; Walton Creek, North Park; Baxter's ranch; Table Rock; Middle 

 Park ; Arapahoe Pass ; Beaver Creek ; Long Gulch. 



5. OREOBROMA Howell. 



Sepals not erose-denticulate. i. O. nevadcnsis. 



Sepals erose-denticulate. 2. O. Grayi. 



1. Oreobroma nevadensis (S. Wats.) Howell. (Calandrinia Ncvadensis S. 

 Wats.) On dry mountains from Wash, to Colo, and Calif. Steamboat 

 Springs. 



2. Oreobroma pygmaea (A. Gray) Howell. (Calandrinia pygmaea A. Gray) 

 Dry mountain sides from Mont, to Colo, and Calif. Alt. up to 12,000 ft 

 Mountain northeast of Boreas ; Ragged Mountain, Gunnison Co. ; Leroux 

 Parks ; Cameron Pass ; Bob Creek ; Boreas ; Leadville ; Grayback mining 

 camp ; Arapahoe Peak. 



6. EROCALLIS Rydb. 



i. Erocallis triphylla (S. Wats.) Rydb. (Claytonia triphylla S/ Wats. ; 

 Oreobroma triphylla Howell) In the mountains from Wyo. and Wash, to 

 Colo, and Calif. Cameron Pass. 



7. LEWISIA Pursh. BITTER ROOT. 



i. Lewisia redeviva Pursh. On stony ridges from Mont, to Colo., Ariz, 

 and Calif. Pinkham Creek, Larimer Co. 



8. PORTULACA L. PURSLANE, PUSSLEY. 



Stem prostrate ; sepals pointed in the bud ; seeds obscurely granulate. 



i P. oleracca. 

 Stem ascending ; sepals obtuse in the bud ; seeds echinate-tuberculate. 



2. P. rctnsa. 



1. Portulaca oleracea L. In waste places and cultivated soil from Maine to 

 Mont., Fla. and Mex. Alt. 4000-5000 ft. Ft. Collins. 



2. Portulaca retusa Engelm. In sandy soil from Ark. to Nev., Tex. and 

 N. M. Alt. up to 6000 ft. Colorado Springs. 



