196 : PITTONIA. 
P. confertum as a form with longer corolla. This appears to 
‘have been Nuttall’s opinion who collected the two, and whose 
field experience of the easy variability of the corollas in West 
American Polemoniaceous plants may have warranted such a 
view of this plant and the next. 
* * * Root perennial ; leaflets imbricated, simple or 2-parted ; 
carolla narrowly funnelform, the tube ex- 
ceeding the limb. ` 
+ Stamens adnate to the middle of the tube, or higher, 
slightly or not at all declined ; Jlowers 
blue, varying to white. 
12. P. cowrERTUM, Gray, Proc. Acad. Philad. 1863. 73: 
Bot. Cal. i. 500; Syn. Fl. L c.—One of the most eommon and 
beautiful plants of the highest mountains throughout the 
whole western country. The named variety mellitum is 
simply a better development of the plant in sheltered situations. 
or at somewhat lower altitudes: The type is the more 
common state and is found on the coldest and bleakest 
summits. 
+ + Stamens adnate almost wholly, hence not susceptible of 
being declined ; corolla yellow, the limb more 
spreading than in the last, tube 
still narrower. 
13. P. BranpEcEer = Gilia Brandegei, Gray, Proc. Am. 
Acad. xi. 85; Syn. Fl. l. e. 149. 
COLLOMIA. 
Nuttall, Genera N. Am. Pl. i. 126; Lindl Bot. Reg. xiv: 
Benth. in Bot. Reg. xix. exel. sp. and in DC. Prodr. ix. 307. 
excl. sp.; Gray, Proc. Am. Acad. viii. 258, in part, and Bot. Cal. 
and Syn. Fl. N. Am. with like exceptions. ` 
MI NAAR Cun ANE of uet farte ol nr MS 
