382 PROCEEDINGS OF THE AMERICAN ACADEMY 



acute, 8 to 10 lines long, thin and glabrous, minutely clliolate, the 

 scarious sheaths narrow and ciliate : peduncles usually terminal, 1 or 

 2, glabrous ; umbel 3-8-flowered, i.nvolucrate with small ovate or 

 lanceolate bracts ; pedicels glandular-pubescent, 1 to 3 lines long : 

 sepals slightly pubescent, purplish, a line long, a little shorter than 

 the white petals : filaments naked ; anther-cells closely contiguous : 

 style stout, as long as the oblong-ovate ovary. — In damp shade, 

 Central Florida, in St. John's and Sumter Counties, &e., collected 

 by Miss Mary C. Reynolds, in 1878, and by J. Donuell Smith and 

 A. H. Curtiss. Referred to T. gracilis, HBK., by C. B. Clarke in his 

 revision of the order, from which it is clearly distinct, that species 

 having bearded filaments and anther-cells widely separated upon a 

 broad arcuate connective, broad and densely ciliate sheaths, rougher 

 leaves, &c. 



CyPERUS SERRULATUS. Perennial, a foot high or less, the smooth 

 stem exceeding the flat rough-edged leaves : involucral bracts 3 or 4, 

 very scabrous-serrulate on the margin, mostly exceeding the subcap- 

 itate umbel : spikelets numerous, on very short rays, linear-oblong, 

 4 to 12 lines long, the spreading greenish acute scales flattened and 

 acutely carinate, not decurrent on the rhachis, the keel serrulate toward 

 the apex : nutlet triangular, oblanceolate, acutish, narrowing down- 

 ward to a substipitate base, | line long. — Received from Dr. George 

 Vasey as collected in Placer County, California, in October, 1880. 



