466 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



POLEMONIUM. 



Annual; corolla white, nearly rotate 1. P. rnicranthum. 



Perennials; corolla blue, campanulate. 

 Stems erect, 60 to 90 cm. tall. 



Leaflets oblong-ovate 2. P. coeruleum. 



Leaflets linear 3. P. pedmatum.. 



Stems low, 5 to 30 cm. high. 



Densely cespitose, 5 to 10 cm. high. 



Viscid-glandular throughout; flowers violet with 



yellow eye 4. P. elecjans. 



Less viscid, sparsely pilose throughout; flowers 



white or pale blue 5. P. viacosuin pilosum. 



Loosely cespitose, 15 to 30 cm. high, scarcely glandular. 



Leaflets oval or oblong, less than 1 cm. long 6. P. humile. 



Leaflets lanceolate, 1 to 1.5 cm. long 7. P. ainoenum. 



1. Polemonium rnicranthum Benth. in DC. Prod. 9: 318. 1845. 

 Type locality: "Ad flum. Columbia." Collected by Douglas. 

 Range: British Columbia to California and Nevada. 



Specimens examined: Wenache, Whited 1025, 20; North Yakima, Henderson, May 25, 

 1892; Sunuyside, Cotton 322; Coupeville, Gardner 209; Fort Colville, Lyall in 1861; 

 Spokane, Piper, May 16, 1896; Hangman Creek, Sandherg <& Leiherg 13; Pullman, Piper; 

 Hull 589; Wawawai, Piper 1521; Walla Walla, Brandcgee 972. 



Zonal distribution: Arid Transition and Upper Sonoran. 



2. Polemonium coeruleum L. Sp. PI. 1: 162. 1753. 

 Polemonium occidentale Greene, Pittonia 2: 75. 1890. 



Type locality: "Habitat in Europae, Asiae, Americae septentrionalibus. 



Range: Alaska to California and Colorado. Europe. Asia. 



Specimens examined: Mount Adams, Henderson, August 4, 1892; Marshall Junction, 

 Piper 2251. 



The P.foliosissimum'i of Suksdorf's list is based on a specimen similar to Piper 2251 

 and from the same region. The specimens from Mount Adams are not quite identical 

 with those from Marshall Junction, and further material may show them to be distinct. 



Professor Greene maintains that the so-called P. coervleum of the Pacific coast difl'crs 

 from the European plant in having horizontal rootstocks. Unfortunately too few of the 



specimens have the underground parts preserved to judge this character fairly. 



* 



3. Polemonium pectinatum Greene, Bull. Cal. Acad. 1: 10. 1884. 



Type locality: "In the eastern part of Washington Territory." Collected by Hilgard. 



Range: Eastern Washington. 



Specimens examined: Rock Lake, Sandherg & Leiherg 105; Spokane County, Mrs. 

 Susan Tucker in 1892; eastern Washington, Hilgard in 1882; without locality, Wilkes 

 Expedition. 



4. Polemonium elegans Greene, Pittonia 3: 305. 1898 (April 8). 

 Polemonium hicolor Greenman, Bot. Gaz. 25: 262. 1898 (April 15). 



Type locality: "In volcanic sand at 9000 feet altitude on Mt. Rainier, Washington." 

 Collected by Piper. 



Range: Cascade Mountains, Washington. 



Specimens examined: Mount Rainier, Piper 2129; Smith 780; Allen 62, 294; Mount 

 Adams, Suksdorf 79; HouvW In 1882; Henderson 2411; Flett 1243. 



Zonal distribution: Arctic. 



