140 RYDBERG: Rocky MOUNTAIN FLORA 
whorled leaf-like bracts. Sepals 2, somewhat unequal. Petals 
3-10, oblong. Capsule oblong-conical, circumscissile. 
The genus is closely related to Claytonia, and the only dis- 
tinctive character is the circumscissile capsule. Howell included 
it in Oreobroma and Robinson in Lewisia ; in both genera, especi- 
ally the latter, it is out of place on account of its habit. 
Erocallis triphylla (S. Wats.) Rydb. 
Claytonia triphylla S. Wats. Proc. Am. Acad. 10: 345. 1875. 
Alsinopsis propinqua (Richardson) Rydb. 
Arenaria propinqua Richardson, Franklin Journey 738. 1823. 
Arenaria verna hirta S. Wats. Bot. King Exp. 41. 1871. Not 
A. hirta Wormskj. 
Arenaria verna (a)equicaulis A, Nels. Bull. Torrey Club 26: 352. 
1899. 
Alsinopsis Rossii (Richardson) Rydb. 
Arenaria Rossii Richardson, Franklin Journey 738. 1823. 
Alsinopsis quadrivalvis (R. Br.) Rydb. 
Arenaria quadrivalvis R. Br. in Parry tst Voy. app. cclxxi. 
1824. 
Alsinopsis obtusiloba Rydb. 
Arenaria obtusa Torr. Ann. Lyc. N. Y. 2: 170. 1827. Not 
A. obtusa All. 1785. 
Arenaria biflora S. Wats. Bibl. Index 94. 1878. Not A. biftora 
OE acy 2 
Arenaria sajanensis Robinson, Proc. Am. Acad. 29: 304. 1894- 
Not A. sajanensis Willd. 1816. 
Delphinium reticulatum (A. Nels.) Rydb. 
Delphinium occidentale reticulatum A. Nels. Bull. Torrey Club 27 : 
261. 1900. 
ODOSTEMON Raf. Am. Monthly Mag. 2: 26s. F 1818. 
Mahonia Nutt. Gen. Am. 1: 211. 1818. 
Both Odostemon Raf. and Mahonia Nutt. were published in the 
same year, but the former a few months earlier. The Rocky 
Mountain species are: 
