142 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES 



ing; aclienes obovoid, smooth and shining, 1 mm. long, acute. 

 Specimens, said to be "too young for positive determina- 

 tion," collected April 18, 1854, at Cucamonga, by Bigelow. are 

 referred here by Torrey, in Pac. R. Rep. 4 :152. The species 

 is not otherwise known from our region, and perhaps does 

 not occur here. It is widespread both in Europe and Amer- 

 ica, and is usually found about salt marshes. 



5^' 2. Scirpus pauciflorus, Lightf. Fl. Scot. 1078. Britton, 

 Trans. N. Y. Acad. 11:75. Britt. & Br. 111. Fl. 1:262. Eleo- 

 charis pauciflorus, Link, Hort. Berol. 1 :28-4. Watson, Bot. 

 Cak 2:221. 



Perennial by slender rootstocks ; culms slender, rigid, stri- 

 ate, leafless, 10-15 cm. tall; spikelets oblong, verj'- acute, com- 

 pressed, 4-8-flowered, bractless, 5 mm. long : scales dark brown, 

 hyaline margined, lanceolate, acuminate, 3 mm. long; bristles 

 2-6, as long as the achene or longer, or none; achene stramin- 

 eous, obovoid, pointed, obscurely reticulate, 2 mm. long. 



Bear Valley, 6,500 ft. alt. in the San Bernardino Mts., June, 

 1894, 3265 Parish. In our specimens the bristles are wanting. 

 The species is a northern one, occurring on the Pacific Coast 

 in the Sierra Nevada at considerable altitudes; eastward in 

 the Rocky Mts., Minnesota, Western New" York and Canada; 

 also in Northern Europe. 



3. Scirpus cemuus, Vahl, Enum. 2 :285. Britton, Trans. 

 N. Y. Acad. 11 :76. S. riparius, Spreng. Svst. 1 :208. Watson, 

 Bot. Cal. 2:217. 



Annual; culms tufted, setaceous or filiform, erect, 3-angled, 

 5-15 cm. tall, the uppermost sheath usually bearing a short 

 leaf; involucral leaf solitary, erect, setaceous from a broad 

 scarious base, not exceeding the spikelet, very promptly de- 

 ciduous ; spikelet ovoid to oblong, 2-5 mm. high ; scales pur- 

 ple with pale midvein, or pale Avith brown markings, concave, 

 oval, 1 mm. in diameter ; bristles none ; achenes brown, granu- 

 late orbicular, the inner face flatter and broader than the 

 others, 0.75 mm. in Avidth and height, mucronulate. 



Connnon along the margins of wet streams and ponds, in 

 the Cismontane region, below 1,500 ft. alt. Santa Monica; 

 Hasse. Los Angeles ; Braunton, Davidson. San Bernardino ; 

 Parish. A species of wide distribution in Europe, Australia 

 and South America ; Init in North America known only from 

 the Pacific Coast. 



** Spikelets several or many, termifial, subtended by one or more 

 involucral leaves; bristles r6\ anthers tipped with an appendage, 

 which is hist>iduloiis, except in No. 7; styles 2 cleft; achenes plano- 

 convex; perennials with stmt, scaly horizontal rootstocks. 



