Part 1, 1909] SPARGANIACEAE 7 
staminate heads; pistillate heads in fruit 2.5-3 cm. in diameter ; sepals long-clawed ; blades 
obovate, rounded and erose at the apex, scarcely wider than the dilated lower portion of the 
claws; achenes sessile, their bodies obovoid, 3-5-angled, rounded at the apex, about 1 cm, 
long and 6 mm. thick; beak nearly 2 mm. long; stigmas linear, usually 2. 
TYPE LocaLitTy: Calistoga, California, 
DISTRIBUTION : Central California. 
4. Sparganium androcladum (Engelm.) Morong, Bull. Torrey 
Club 15: 78. 1888. 
Sparganium americanum Ell. Bot. S.C. & Ga. 2: 521. 1824. Not S. americanum Nutt. 1818. 
Sparganium ramosum Chapm. Fl. S. U. S. 443. 1860. Not S. ramosum Huds. 1778. 
Sparganium simplex androcladum Engelm.; A. Gray, Man. ed. 5. 481. 1867. 
Sparganium simplex androgyna Meinsh. Mél. Biol. Acad. St. Petersb. 13: 387. 1893. 
Sparganium americanum androcladum Fernald & Eames, Rhodora 9: 87. 1907. 
Perennial, with a rootstock; stem 3-10 dm. high, erect; leaves dark-green, triangular 
‘at the base, 5-10 dm. long, 5-12 mm. wide; bracts similar but barely concave at the base, 
slightly dilated and narrowly if at all scarious-margined; inflorescence branched, with 
branches or peduncles axillary; lower branches usually witha single (sometimes no) pis- 
tillate head and 3-7 staminate ones, usually strongly geniculate; sepals with dilated claws, 
two thirds as long as the achenes, their blades cuneate and erose at the apex ; fruiting heads 
2-2.5 cm. in diameter ; achenes stipitate, brown, dull, their bodies fusiform, 5-6 mm. long, 
3 mm. thick, terete or obtusely angular, often constricted at the middle; stipe and beak 
each about 3 mm. long; stigma linear, about 2 mm. long; anthers linear-oblong, about 1 
mm. long and one fourth as thick. 
TYPE LOCALITY: New England. 
DISTRIBUTION : Shallow water, Newfoundland to Florida, Alabama, and Minnesota. : 
ILLUSTRATIONS: Bull. Torrey Club 15: pi. 79, f. 5; Britt. & Brown, Ill. Fl. f. 2399; Engler, 
Pflanzenreich 419; fi 3G. 
5. Sparganium americanum Nutt. Gen. 2: 203. 1818. 
Sparganium simplex Wood, Class Book ed. 2. 523. 1847. Not S. simplex Huds. 1778. 
Sparganium simplex Nuttall Engelm.; A. Gray, Man. ed. 5. 481. 1867. 
Sparganium angustifolium Graebner, in Engler, Pflanzenreich 49: 16, in part. 1900. Not 5. 
angustifolium Michx. 1803. 
Sparganium americanum Nuttallii Graebner, loc. cit, asa synonym. 1900. 
Sparganium Nuttallii Engelm.; Graebner, loc. cit, asa synonym. 1900. 
Sparganium simplex americanum Farwell, Ann. Rep. Mich. Acad. Sei. 6: 202. 1904. 
Perennial, with a rootstock and numerous roots at the base of the stem ; stem stout, 
3-7 dm. high; leaves deep-green, carinate, 3-10 dm. long, 6-12 mm. wide, more or less 
scarious-margined below; lower bracts similar, but shorter, ascending, more or less dilated 
and scarious-margined below; inflorescence usually simple, all heads sessile or the lower 
pistillate’ ones pedicelled, axillary, the latter sometimes on strict (not geniculate) branches 
bearing 1-2 staminate heads above; staminate heads at the end of the stem 3-10; fruiting 
heads 2-2.5 cm. in diameter; blades of the sepals cuneate-obovate, erose at the apex, grad- 
ually tapering into the broad claws; body of the achenes fusiform, brown, dull, 5-6 mm. 
long, 2-3 mm. thick; stipe 2-3 mm. long; beak 2-3 mm.; stigma oblong,seldom over 1 
mm. long; anthers oblong, about 1 mm. long and one fourth as wide. 
TYPE LOCALITY : Vicinity of Philadelphia. : : : : 
DISTRIBUTION : Bogs and muddy shores, from Nova Scotia to South Carolina, Indian Territory, 
and Iowa. , 
ILLUSTRATIONS: Bull. Torrey Culb 15: f/. 79, f. 7 (as S. simplex) ; Engler, Pflanzenreich 
40: fF. 3] (as S. angustifolium). ce 
6. Sparganium lucidum Fernald & Eames, Rhodora 9: 87. 1907. 
Sparganium simplex androcladum Engelm.; A. Gray, Man. ed. 5. 481, in part. 1867. 
Perennial, with a rootstock ; stem erect, stout, 7-10 dm. high; leaves strongly carinate, 
3-6 dm. long, 5-12 mm. wide, firm, dark-green; inflorescence simple or somewhat 
branched; branches or heads axillary ; bracts ascending, 2.5-4 dm. long; branches bearing 
one pistillate and sometimes 1-4 staminate heads, the main axis bearing 2-4 sessile pistil- 
late and 6-10 staminate heads; sepals spatulate, two thirds as long as the achenes, rounded 
or truncate, slightly erose at the apex; fruiting heads about 3 cm. in diameter ; achenes 
