300 PITTONIA. 
Collomia ; but it is totally foreign to that genus by its calyx, 
capsule and seeds. From Gilia its few and large muci- 
laginous-coated seeds, its opposite leaves, its strictly salver- 
form corolla, and unequally inserted stamens exclude it. 
It cannot be consistently treated as other than a generic 
type; and I propose in this view of the case to name it 
MICROSTERIS, 
Small much branched annuals, with entire leaves, all ex- 
cept the floral ones opposite. Flowers minute, scattered, 
singly or in pairs in the axils of the rameal alternate leaves. 
Calyx, corolla, stamens and capsule wholly as in Phloz. 
Seeds few, large, the coat when moistened developing a thick 
glutinous mass, this not spirilliferous. 
1. M. eracus. Collomia gracilis, Dougl. in Hook. Bot. 
Mag. t. 2924 (1829), and Gilia gracilis, Hook. 1. c. Phlox gra- 
cilis, Greene, Pitt. i. 141 (1887). That this, as published by 
Hooker, was an aggregate, is apparent from the fact that, in 
the Flora Boreali-Americana, he prints as synonyms of this, 
two species which Douglas had segregated and named in 
manuscript. In other words, Douglas had made out three 
species, which Hooker, in publishing, merged in one ; merely 
printing the other two names as synonyms. The figure 1n 
the Botanical Magazine appears to represent altogether only 
one of Douglas’ three, and this must be accepted as the type 
of the species. This type came from the Spokane River re- 
gion, and is beautifully represented in several herbaria by 
specimens which Mr. Leiberg distributed in 1891, from Lake 
Pend d’Oreille, under n. 119. Heller n. 3278 is also the 
same. Mr. Leiberg has also collected in the same region 8 
second species, the distinctness of which he has insisted upon. 
I have no doubt that this is one of Douglas’ segregates, and 
I take up the name which he assigned it. 
SEESE So ae 
1 See Hook. Fl. ii. 76. 
