6 University of California Publications. [BOTANY 



KEY TO THE SPECIES. 

 I. Root perennial. 



A. Tall, with few branches from a slender tap root. 



a. Corolla pink, large. 1. P. carneum. 



6. Corolla bright blue. 2. P. coeruleum. 



B. A span high from a more or less tufted root-stock. 



a. Leaves scarious, sheathing, pinnae three-parted, crowded. 



3. P. eximium. 



b. Leaves with entire oblong pinnae two to seven lines long; corolla 



deep blue with yellow tube. 4. P. pulchellum. 



c. Leaves with entire pinnae one to one and one-half lines long, 



nearly as broad; corolla pale blue to white. 



5. P. parvifolium . 

 II. Root annual. 



a. Flowers solitary in the leaf axils, and scattered. 



6. P. micranthum. 



1. Polemonium carneum Gray. 



Perennial, a foot or two high, branching and leafy, soft- 

 pubescent; leaves five to six inches long below, an inch or less 

 long in the inflorescence, many broad- to narrow-lanceolate pinnae 

 averaging an inch in length; inflorescence single or in a terminal 

 corymb of two to four flowers; calyx four to five lines long, cam- 

 panulate, with broad, rounded base, lobes longer than the tube, 

 lanceolate; corolla campanulate, an inch long, pink fading to 

 purple, tube shorter than the corolla, lobes round-obovate ; sta- 

 mens inserted about half way up on the tube, unequal in length, 

 shorter than the corolla, very pubescent at the base; style about 

 equal to the stamens; capsule round, three to four lines in 

 diameter, included in the tube of the enlarged calyx, seeds three 

 to four in each cell. 



San Mateo Co., C. T. Blake, J. B. Davy. Near San Francisco, 



G. R. Vasey. Woods of Siskiyou Co., E. L. Greene. 







2. Polemonium coeruleum L. 



Perennial, one to three feet high, erect, simple or with few 

 branches, inflorescence glandular- pubescent, otherwise glabrous; 

 leaves four to eight inches long with many lanceolate pinnae 

 about one inch in length; inflorescence of terminal, rather close 

 panicles or small axillarj- ones; calyx about three lines long, 

 campanulate, the broad, lanceolate lobes shorter than the tube, 

 often with tinges of purple and red; corolla deep blue, campanu- 

 late, little more than twice the calyx, tube shorter than the 



