40 PROCEEDINGS OF THE CALIFORNIA 



Flowers orange yellow throughout ; keel obtuse, wings and banner equal ; 

 teeth of the calyx about one-third its length, acuminate, embryo legume terete, 

 appresscd pubescent, two-seeded ; mature fruit unknown. 



From Kern River, pendent from rocky cliffs. The Society is indebted to 

 Mrs. Hutchings for this uew and very beautiful species. 



Dr. Ayres presented a paper by Dr. T. M. Logan, of Sacra- 

 mento, on the Physics, Hygiene, and Thermology of the Sacra- 

 mento River, which was read and referred to the Publishing 

 Committee. 



Regular Meeting, June 15th, 1863. 

 Dr. Ayres in the Chair.' 



Six members present. 



Donations to the Cabinet : 



Insects from seeds imported from Germany, by Mr. Bevans ; 

 plants from Sonoma, by Dr. Behr. 



Donations to the Library : 



Annual Report of the Trustees of the Museum of Comparative 

 Zoology for 1862. American Journal of Science for May, 1863, 

 from the Editor. 



Dr. Kellogg read the following paper : 



Description of a New Species of Mentzelia. 



BY A. KELLOGG, M.D. 



Mentzelia L. 

 M. pectinata Kellogg. [Fig. 9.] 



Rough, with a white minutely-barbed pubescence throughout ; stem four to 

 six inches high ; simple, or slightly branched at the summit ; greenish, or a 

 little blanched at the base ; leaves pinnatifid, lower petiolate, the upper sessile, 

 three-nerved ; flowers of a shining golden color, with a lustrous metallic hue. 

 shading from a deep, vivid orange to a burnt carmine center ; stamens very 

 numerous, all filiform, scarcely half the length of the petals ; anthers white ; 

 style longer, spirally twisted above at the divisible portion ; petals five, spread- 

 ing, obcordate or obovate cuneate at the base. Flowers from three-fourths to 

 one inch in diameter, clustered at the summit by the short branches ; short 

 pedicillate (the uppermost often sessile or sub-sessile) ; two or three linear-subu- 

 late bracts above the pedicel at the base of the capsule ; capsule thickened 

 upwards from a sharp base ; calyx segments lance-subulate acute. 



Root ligneous. 



Found by Mrs. Hutchings on the mountains above Yisalia. 



