ACADEMY OF NATURAL SCIENCES. 9 



Regular Meeting, February 16th, 1863. 

 President in the Chair. 



Fourteen members present. 



Donations to the Cabinet were received as follows : 



From J. E. Clayton, Esq., a set of ores from the Russ District, 

 California. 



Donations to the Library : 



Proceedings of the Zoological Society of London for the year 

 1857 : from Dr. Cooper. Astronomical and Meteorological Ob- 

 servations, made at the U. S. Naval Observatory during the year 

 1861 : from the U. S. Naval Observatory. 



Dr. Kellogg read the following paper : 



Description of two New Species of Plants from Nevada Ter- 

 ritory. 



BY A. KELLOGG, M.D. 



Aplopappus Cass. 

 A. Nevadensis Kellogg. [Fig. 1.] 



Suffrutescent, caudex branching, branches three to four inches in height, some- 

 what ascending ; rigid, striate, scabrous throughout. Heads solitary and ter- 

 minal, homochromous and many-flowered. Leaves alternate, crowded near the 

 base, oblanceolate, very acute, quite eutire, three-nerved ; the reticulate veins 

 and nerves prominent, sub-petiolate (half to one inch in length, by about one- 

 fourth in breadth) ; the lowermost leaves more distinctly petiolate, spatulate, 

 obtuse, or sub-acute ; upper cauline leaves few or solitary, lanceolate, very acute 

 or acuminate, three-nerved. 



Involucre campanulate, the greenish somewhat foliaceous scales rigid, many- 

 nerved, (chiefly three to five) margins scarious, cleft-ciliate, or somewhat fim- 

 briate, oblanceolate, acute, in three series, often one or two bractoid scales at the 

 base. 



Receptacle flat, alveolate ; alveoli toothed, naked. Rays (about eight) orange- 

 yellow, oblong-oval, two or three-toothed, pistillate, fertile, tube slender, about 

 as long as the achenia, or one-third to half the length of the ligule. 



Disk corolla cylindrical, slightly expanding, five-toothed, erect, glabrous. 

 The achenia (about twenty, including the ray) angular, oblong, somewhat com- 

 pressed ; base cuneate, satiny appressed pubescent (with white hairs) ; pappus 

 of unequal capillary scabrous bristles, rigid and fragile, or deciduous. 



Appendages of the style much longer than the stigmatic portion, lance-subu- 

 late, hispid, much exsert, erect-spreading. 



This plant was brought from Nevada Territory by Mr. Herbert C. Dorr. 



