Vol. XI, pp. 35-37 March 13, 1897 



PROCEEDINGS ^^ , p 



BIOLOGICAL SOCIETY OF WASHINGTON /'^ ^ 



L ! ; 



COLLOMIA MAZAMA, A NEW PLANT FROM THE 

 VICINITY OF CRATER LAKE, OREGON. 



BY FREDERICK V. COVILLE. 



In August, 189C>, while engaged with ^\i\ John B. Leiberg in 

 an examination of tlie 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 l)een withheld 

 from the main shi})mentand stored at a remote and, for a por- 

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

 of specimens in this set finally reached Washington late in 

 Februar}^ and now make possible the publication of the species. 



Collomia mazama sp. nov. 



Plant pereimial, few to many-.steinmed from a slender tap-root, 15 to 30 

 centimeters liigh, ))elow the intiorescence o;labrous or with a few arachnoid 

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

 millimeters in diameter, simple np to the inflorescence ; leaves ol)lono- 

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

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

 uppermost entire and sessile, the lower often oblanceolate and tapering 

 into a short narrowly margineil petiole; iuHorescence suhcapitately 

 cymose, sometimes with additional short-pediincnlate clusters of flowers 

 from one or two of the upper axils, glaiidular-haii'}^ and strong-scented • 

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



6— HioL. Soc. Wash., Vul. XI, 1S97 (35) 



