1922] Weatherby,—New Species of Eleocharis : 23 
It is evident, then, that C. edentula is a species of northern origin, 
originally extending from Iceland to the North Pacific but since the 
Pleistocene segregated into three geographic areas, the north Atlantic 
shores, shores of the Great Lakes and shores of the Pacific; and that 
in each of these areas the species has developed local tendencies which, 
although of geographic significance, are not to be considered of specific 
value. The three variations are 
CAKILE EDENTULA (Bigelow) Hook., var. typica. C. edentula 
(Bigel.) Hook. Fl. Bor.-Am.1.59 (1830); Millsp. Field Mus. Bot. Ser. ii. 
. 129 (1900). Bunias edentula Bigel. Fl. Bost. 157 (1814). C. ameri- 
cana Nutt. Gen. ii. 62 (1818); Millsp. 1. c. 127 (1900); in part. C. 
maritima B. Torr. & Gray, Fl. i. 119 (1838), in great part. C. mari- 
tima, var. americana (Nutt.) Torr. Fl. N. Y. i. 66 (1843), mostly. 
C. lanceolata, subsp. edentula (Bigel.) O. E. Schulz in Urban. Symb. 
Ant. iii. 504 (1903).—Upper joint of silique ovoid or rarely ovoid- 
lanceolate, short-beaked, its articulating base without pits or pits 
only rudimentary; articulating summit of lower joint without pro- 
cesses or processes barely developed.—Iceland and Labrador to 
South Carolina, rarely inland to the Great Lakes; Azores. 
Var. lacustris, n. nom. C. americana Millsp. 1. c. 127 (1900) as 
to plant described (the Great Lake plant), not Nutt. —Upper joint of 
silique ovoid-lanceolate, long-beaked, its articulating surface with two 
deep and four shallow pits; articulating summit of lower joint with 
two long and four short subulate processes.—Strands of Lakes On- 
tario, Erie, Huron and Michigan. Since Millspaugh mistook this for 
Nuttall's C. americana, it is well to designate a TYPE: sand along 
Lake Michigan, Millers, Indiana, September 4, 1911, E. E. Sherff in 
Gray Herb. 
Var. californica (Heller), n. comb. C. californica Heller, Muhlen- 
bergia, iii. 10 (1917).—Stiffer, with more ascending branches than 
var. fypica; fruits similar, but the articulating surfaces with six well de- 
veloped processes and pits.—Coast of the Pacific, from British 
Columbia to California. 
Gray HERBARIUM. 
A NEW SPECIES OF ELEOCHARIS FROM MASSACHUSETTS 
C. A. WEATHERBY. 
ErEocnanis fallax n. sp., perennis; rhizomate longe repente, dia-. 
metro circa 2 mm., paleis amplectentibus herbaceis striatis longe 
acuminatis fusco-rubris obsito; culmis fasciculatis, sectione trans- 
versali subteretibus vel siccatis leviter compressis, subellipticis, stri- 
atis, gracilibus (diametro ad apicem vaginae superioris 0.5-1.1 mm.), 
