1924] Fassett,—A Study of the Genus Zizania . 157 
Sept. 8, 1917, A. Gershoy, no. 78. District or CoLuMBIA: Washing- 
ton, Aug. 14, 1905, Agnes Chase, Kneucker's Gramineae Exsiccatae, 
no. 560; Eastern Branch, July, 1900, E. D. Merrill, no. 171. Vir- 
GINIA: Carter's Wharf, Aug. 27, 1915, I. Tidestrom, no. 7729; Port 
Royal, Aug. 26, 1915, I. Tidestrom. Fromma: Duval Co., A. H. 
Curtiss, no. 3364 (there are two sheets under this number in the Gray 
Herbarium: one is typical Z. aquatica; the other has the pistillate 
lemmas partially glabrous, but still of sufficiently thin texture to 
warrant referring it here). OwTaRro: Pelee Island, Aug. 21, 1915, 
MacDaniels & Eames. Micuican: New Buffalo, July 20, 1911, O. E. 
Lansing, Jr., no. 3279. 
la. Z. AQUATICA, var. brevis, n. var., culmis 2—6.5 dm. altis soli- 
tariis vel subcaespitosis; foliis substrictis 6-18 em. longis 3-9 (-11) 
mm. latis, ligulis 3 mm. longis; lemmatibus femineis 5-8 mm. longis 
chartaceis scabratis, aristis 1-8 mm. longis. 
Culms 2-6.5 dm. tall, solitary or subcaespitose: leaves ascending, 
6-18 em. long, 3-9 (-11) mm. broad; ligules 3 mm. long: pistillate 
lemmas 5-8 mm. long, of thin papery texture, scabrous over the whole 
surface; awns 1-8 mm. long.— Tidal flats of the St. Lawrence River 
about Quebec. PROVINCE or QueBEc: St. Lawrence River above 
the city of Quebec, Sept., 1912, M. O. Malte; rocky tidal flats, Levis, 
Aug. 9, 1923, Svenson & Fassett, no. 853 (TYPE in Gray Herb.); rocky 
tidal flats, St. Augustin, Aug. 7, 1923, Svenson & Fassett, no. 854; 
Ste. Anne de Beaupré, Aug. 30, 1905, John Macoun, no. 68989; gréves 
intercotidales de Beauport, Aug. 8, 1922, Bro. Victorin, no. 15230. 
ONTARIO: Casselmann, John Macoun, no. 85842, approaches this 
variety, but has awns 1-1.5 cm. in length. 
lb. Z. AQUATICA, var. ANGUSTIFOLIA Hitchcock, Ruopora, viii. 210 
(1906). Z. palustris L. Mant. 295 (1771); Schreber, Beschreibung 
der Gräser, ii. 54. t. 29 (1772); Willd. Sp. Pl. iv. 395 (1805); not 
Rasp. Ann. Sci. Nat., Sér. I. v. 452 (1825); nor Hitchcock, Contrib. 
U.S. Nat. Herb. xii. Pt. 3: 124 (1908) and in Gray, Manual, ed. 7: 
120 (1908). Hydropyrum esculentum Link, Hort. Berol. i. 252 (1827) 
in part; Kunth, Enum. i. 9 (1833) in part, not Suppl. 7, t. 1 (1835). 
Melinum palustre Link, Handb. i. 96 (1829). Z. aquatica Hitchcock, 
Contrib. U. S. Nat. Herb. xii. Pt. 3: 124 (1908) and in Gray, Manual, 
ed. 7: 120 (1908); not L. Sp. Pl. 991 (1753).—Eastern New Bruns- 
wick to central New York and eastern Ontario; northern Indiana. 
Type from Belgrade, Maine, Aug., 1895, F. L. Seribner. 
The following specimens are typical: New BnuNswick: Lakeside, 
Aug. 25, 1923, Svenson & Fassett, no. 855; Westfield, Aug. 6, 1909, 
M. L. Fernald, no. 1285. Marne: Calais, Aug. 3, 1909, M. L. Fernald, 
no. 1284; Milford, Aug. 15, 1916, Fernald & Long, no. 12579; Man- 
chester, Aug., 1915, F. L. Scribner. Vermont: Burlington, Aug. 
5, 1921, C. H. Knowlton; Hubbardton, July 31, 1915, Eames & God- 
frey, no. 9070. MassacHusETTS: Pepperell, Aug. 14, 1909, L. W. 
Riddle (in Herb. Wellesley College). New York: Plattsburg, Am. 
