VOL. XI, PP. 35-37 MARCH 13, 1897 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



COLLOMIA MAZAMA, A NEW PLANT FROM THE 

 VICINITY OF CRATER LAKE, OREGON. 



BY FREDERICK V. COVILLE. 



In August, 1896, while engaged with Mr. John B. Leiberg in 

 an examination of the flora of Crater Lake and vicinity, in the 

 state of Oregon, a violet-flowered Collomia was discovered. It 

 was at once recognized as a probably new species, and a descrip 

 tion was drawn in the field from the fresh specimens. In the 

 transmission of our season's collection to the National Herba 

 rium at Washington, however, the specimens of this plant, with 

 several other species from the same vicinity, were lost, and even 

 after a most careful search could not be traced. Fortunately a 

 single complete set of the numbers collected had been withheld 

 from the main shipment and stored at a remote and, for a por 

 tion of the winter, snowbound point in Idaho. The two sheets 

 of specimens in this set finally reached Washington late in 

 February and now make possible the publication of the species. 



Collomia mazama sp. nov. 



Plant perennial, few to many-stemmed from a slender tap-root, 15 to 30 

 centimeters high, below the inflorescence glabrous or with a few arachnoid 

 viscid hairs on the stem and leaf-margins ; stems terete, commonly 1 to 2 

 millimeters in diameter, simple up to the inflorescence ; leaves oblong- 

 lanceolate to lanceolate, commonly 3 to 6 centimeters in length, acute at 

 apex and base, acutely and somewhat laciniately 3 to 5-toothed above, the 

 uppermost entire and sessile, the lower often oblanceolate and tapering 

 into a short narrowly margined petiole ; inflorescence subcapitately 

 cymose, sometimes with additional short-pedunculate clusters of flowers 

 from one or two of the upper axils, glandular-hairy and strong-scented 

 bracts similar to the uppermost leaves, entire, the lower usually 2 to 3 cen- 



6 BIOL. Soc. WASH., VOL. XI, 1897 (35) 



