494 PROCEEDINGS OF THE AMERICAN ACADEMY. 



•I- -I- Tubercle distinctly narrower than the achene. 



E. OVATA, E. Br. — Figs. 8 to 10. — Habitally resembling E. obtusa, 

 the narrower but obtuse scales darker colored : the deltoid-conical often 

 somewhat depressed tubercle about four sevenths as broad and about 

 three sevenths as high as the body of the obovate or inverted-pyriform 

 achene. — Prodr. Fl. N. Holl. 224 in adn. ; Roemer & Schultes, Syst. ii. 

 152; Reichenb. Fl. Germ. Excurs. 77 {Heleocharis) ; Nees, Gen. Fl. 

 Germ., ii. t. 18, f. 17-20; Ledeb. Fl. Ross. iv. 245 (Elaeochans) ; 

 Bockeler, Linnaea, xxxvi. 462 (as Heleocharis, excluding H. obtusa) ; 

 Nyman, Consp. Fl. Europ. 766 ; C. B. Clarke, Jour. Bot. xxv. 268 

 (excluding- E. obtusa and its syn.) ; Terracciano, Malpighia, ii. 310 

 (excluding E. obtusa) ; Richter, Enum. PI. Europe, i. 143. Sct7-pus 

 capitaius, Sehreb. Spic. Fl. Lips. 60 (according to various European 

 authors), not Willd. S. ovatus. Roth, Tent. Fl. Germ. ii. pt. 2, 562, 

 & Cat. i. 5 ; Sturm, Fl.iii. Heft 10, with plate ; Host. Gram. iii. 56 ; Fl. 

 Dan. xi. t. 1801 ; Reichenb. Ic. Fl. Germ. viii. 37, t. 295, f. 700, 701 ; 

 Anders. Cyp. Scand. 11, t. 2, f. 25. S. compressus, Moench, Meth. 349. 

 S. annuus, Thuill. Fl. Bav. ed. 2, i. 22 (ace. to European authors). 



5. nutans, Bergeret, Fl. Pyren. i. 43 (ace. to European authors). S. solo- 

 niensis, Dubois, Meth. Orl. 249 (ace. to European authors). S. multi- 

 caulis, Gmel. Fl. Badens, i. 96. S. turgidus, Pers. Syn. i. 66. Bulbostylis 

 ovata, Steven, Mem. Soc. Imp. Nat. Mosc. v. 355. Clavula ovata, Dumort. 

 Fl. Belg. 143. Eleogenus ovatus, Nees, Linnasa, ix. 294. — The com- 

 mon form of the sjDecies in central Europe. In America definitely known 

 from onlj"^ four stations: ditches and boggy ground, Campbellton, New 

 Brunswick, Sept. 4, 1882 (John Macoun) ; shallow pool, Masardis, IMuine, 

 Sept. 10, 1897 {M. L. Fernald, no. 2837) ; Middlebury, Vermont, July 



6, 1878 (Ezra Brainerd) ; muddy places with E. obtusa, Keweenaw 

 County, Michigan, Aug., 1886 (0. A. Fartvell, no. 547, in part). Prob- 

 ably of wider distribution in Canada and the northern States. 



Var. Heuseri, Uechtritz. — Figs. 15 to 22. — Culms very numerous, 

 slender and flexuous, often recurved or prostrate, from 3 cm. to 3 dm. 

 long, of very different lengths on the same individual : heads dark chest- 

 nut-brown or purplish ; the acutish scales more spreading than in the 

 species: tubercles generally less depressed. — Uechtritz in Garcke, 111. 

 Fl. Deutschl. Aufl. 17, 625. E. olivacea, Britton, Jour. N. Y. Microsc. 

 Soc. v. 101, in part (as to Dedham plant), not Torr. — Common in wet 

 or springy places or even in shallow water in northern Maine, apparently 

 less abundant in eastern Massachusetts. Collected by the writer at the 



