Notes on Colorado plants 
GEORGE E. OsTERHOUT 
OREOBROMA TRIPHYLLA (Wats.) Howell 
Claytonia triphylla Wats. 
This peculiar little plant was collected near timber-line in the 
mountains east of Steamboat Springs, Routt Co., Colorado, July 
15, 1902. In flower it has the appearance of a small Claytonia, 
and the thread-like stem beneath the soil is from a corm similar to 
the species of that genus. It has been reported only from the 
mountains much farther west. 
OREOBROMA NEVADENSIS (Gray) Howell 
Calandrinia nevadensis Gray. 
Collected in the valley of the Bear river at Steamboat Springs, 
Routt Co., Colorado, June 18, 1903. It seems not to have been 
feported from Colorado or adjacent territory. 
Cymoprerus Parrvi (C. & R.) Jones. 
Mature fruiting specimens of this species were collected at Mc- 
Coys, Eagle Co., Colorado, June 14, 1903. At first sight it does 
not differ much from Cymopterus acaulis (Pursh) Rydb. but the 
fruit is considerably larger. I think its collection has been reported 
only a few times and never before from Colorado. 
AGOSERIS AGRESTIS Osterhout, Bull. Torrey Club, 28: 645. 
Further field-study has convinced me that this is not a valid 
Species, but a robust form of thé variable Agoseris glauca (Pursh) 
Greene. Separated from the intermediate forms it appears to be a 
800d species but really grades into the older species. 
“Arabis Tugocarpa sp. nov. 
A perennial many-stemmed from the root, the stems attaining 
a length of 1 to 1. 5 cm., pubescent below and leafy to the 
Inflorescence, the leaves small and auriculate, but the auricles 
Small; the radical leaves oblanceolate, acuminate, 2 to 3 cm. long 
eluding the narrowly winged petiole, pubescent with forked hairs, 
357 
