SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. 143 



-*- Culms ^-angled; sluatlis ncdu/ose; biistles retrcrsely barbed 

 ''-^Involucral leaj stiff and ertct. appaieiitly conwntous wtlh the 

 culm; scales obtuse or emarginate. the stout mtctvein terminating in 

 a short mucro; spikelets in a sessile cluster. 



^ 4. Scirpus Americanus, Pers. Syn. 1 •.'0%. Brittoii, Trans. N. 

 Y. Acad. 11 :78. Britt. & Br. Ilk Fl. 1 :265. S. pungens, Vahl, 

 Enum. 2 :255. Watson, Bot. Cal. 2 :218. C. triangularis, Mac- 

 Mill. Met. Minn. Vol. 99. 



Culms 1-5 dm. tall; leaves 2-6, at length divergent, rigid, 

 channeled, 1-3 dm. long-, 1-3 mm. wide; involncral leaf, 2-20 

 cm. long, channeled; spikelets 1-1, ovoid to ovoid-oblong, 

 acute, 5-10 mm. long; scales dark brown, ovate-oblong, 3-4 

 mm. long ; stamens 3, appendages conical ; achenes brown, 

 obovoid, 1 mm. long, mucronate, equaled by the bristles. 



Apparently confined in the Cismontane region to the coastal 

 subregion. Los Angeles River ; Davidson. San Diego ; Chan- 

 dler. > Wet sand banks, San Pasqual; 1565 Parish. Also re- 

 ported in the Botany of the Death Valley Expedition as 

 abundant in marshes of the deserts of Inyo County. Through- 

 out North America, and in Chile. 

 ■' 5. Scirpus Olneyi, Gray, Bost. Jour. Nat. Hist. 5:238. 



Culms more or less deeply triquetrous, 3-20 dm. tall. 2-3 cm. 

 wide; 1-2 of the sheaths usually bearing a thin, broad leaf, 2-5 

 cm. long, or leafless: involncral leaf, 3-angled, 1-2 cm. long; 

 spikelets 2-20, oblong-ovoid acute, about 1 cm. long: scales 

 brown, broadly ovate ; stamens 2-3 ; achenes brown, obovate, 

 mucronate, 2 mm. long, ecpaled by the bristles. 



Very common in marshes of the Cismontane region ; oc- 

 curring also in the Desert region. Los Angeles ; Davidson, 

 Nevin. Temecula: Nevin, Parish. San Bernardino: Parish 

 Salt Creek and Palmetto Springs, Colorado Desert: Alderson, 

 North to Oregon; on the Atlantic Coast from Florida to 

 Rhode Island. 



ANNOUNCEMENTS FOE, NOVEMBER, 1904. 



The audience of 700 of our most intelligent citizens, who greeted 

 Dr. Theo. B. Oomstock, the lecturer at the November meeting of the 

 Academy, was stimulating and, we trust, an earnest of awakened in- 

 terest in the objects of our organization. We should like to see the 

 habit formed of regular attendance upon these monthly sessions. 



Monday evening, November 14, the Section of Biology met at 

 the State Normal School. There was a most interesting presenta- 

 tion of "Studies of Some Forms of Chlorophyll-Bearing Microscopic 

 Animal Life of Westlake. ' ' 



1. Relationships of the Micro-Organisms Prof. A. B. Ulrey 



2 Phosphorescnee and Cellulose of Animal Life.. Dr. Eleanor Seymour 

 ■S. Chlorophyll-Bearing Animals Dr. C. A. Whiting 



This section has in anticipation for its December meeting (Mon- 

 day, 12th) a valuable paper by Professor Joseph Grinnell on the 

 '■ ' Ecology of Mammals. ' ' 



