112 Muhlenbergia, Volume 2 



Springs, Siskiyou county, in open gravelly places in the woods; 

 also noticed on the ridge west of Sisson. The type came from 

 Cisco, Placer county. 



Convolvulus polymorphus Greene, Pittonia, 3: 331. 1898. 



No. 7997, collected June 8, on the hills west of Yreka, Sis- 

 kiyou county. These plants are somewhat smaller than the 

 type, as they are less than two feet, but they appear to belong 

 with this species. The type locality is not given except "north- 

 ern California and southern Oregon." 



Convolvulus fruticetorum Greene, Pittonia, 3: 333. 1898. 

 No. 7955, collected June 3, along the Sacramento near Mid- 

 dle Creek station, Siskiyou county. This is glabrous rather 

 than puberulent, the stems probably 8 or 10 feet long, climbing 

 over and almost covering shrubs, the peduncles commonly twice 

 the length of the leaves. It is common about Redding. The 

 species is poorly described, but from the range our plant belongs 

 here rather than with C. piirpuratus. 



POLEMONl ACE AE 



COLLOMIA HETEROPHYLLA Hook. Bot. Mag.//. 28g^. 1829. 



No. 7947, collected June i, along the railroad opposite Up- 

 per Soda Spring, Siskiyou county, under or near shrubs. In 

 Bot. Reg. 16://. 134"/^ it is stated that it is a "native of the 

 north-west of North America, whence it was sent to the Horti- 

 cultural Society by Mr. Douglas in 1826." It is common in 

 California and variable, being especially abundant and luxuri- 

 ant in places recently burnt over. 



MiCROSTERiS CALiFORNiCA Greene, Pittonia, 3: 302. 1898. 



No. 7828, collected May 5, at Tehachapi, Kern county, in 

 moist sandy soil along the railroad. Some plants are taller, less 

 diffuse than others, with stems less pubescent. The corolla lobes' 

 appear to be entire. No type locality is given except the whole 

 of middle and northern California. In these specimens the 

 seeds are elliptical-oblong, pale greenish brown. 



