Part 1, 1909] ALISMACEAE 55 
10. Sagittaria Eatoni J. G. Smith, Rep. Mo. Bot. 
Gard. 11: 150. 1899. 
Plants usually submerged, 1-2 dm. tall; leaves represented by flat phyllodia, which are 
attenuate from broad bases, and often also by longer blade-tipped petioles, the blades linear 
or narrowly linear-lanceolate, 2-3.5 cm. long, acute or acuminate; scapes very slender, less 
than 1.5 dm. tall ; whorls of the inflorescence usually one or two or rarely three ; bracts ovate, 
about 2 mm. long, united at the base; pedicels of the pistillate flowers filiform, mostly less 
than 1 cm. long, those of the staminate flowers larger than the former; sepals ovate to 
ovate-lanceolate, becoming 3-4 mm. long; corolla 7-9 mm. broad; filaments suborbicular, 
pubescent, much shorter than the anthers; anthers suborbicular, conspicuously larger than 
the filaments; fruits not seen. 
TYPE LOCALITY: Newburyport, Massachusetts. 
DISTRIBUTION : Massachusetts, Connecticut, and Long Island, New York. 
ILLUSTRATION: Rep. Mo. Bot. Gard. 11: f1. 58. 
11. Sagittaria cycloptera (J. G. Smith) C. Mohr, Bull. Torrey 
Club 24: 20. 1897. 
Sagittaria graminea cyclopiera J. G. Smith, Rep. Mo. Bot. Gard. 6: 52. 1894. 
Plants mostly emersed, 2-8 dm. tall; leaves sometimes partially reduced to slender 
tapering phyllodia, the blades linear or linear-lanceolate, 4-15 cm. long, tapering to both 
ends, shorter than the petioles; scapes erect, usually slightly longer than the leaves, some- 
times branched; whorls of the inflorescence three to fifteen, or rarely solitary, several of 
the lower ones usually pistillate; bracts ovate, 3-5 mm. long, acute, united at the base; 
sepals ovate, becoming 4-6 mm. long; corolla 15-20 mm. broad; filaments dilated, pubes- 
cent; anthers oblong, longer than the filaments; fruit-heads barely 1 cm. in diameter ; 
achenes broadly oblong or oval, 1.5 mm. long, broadly winged, with 2 facial wings on each 
side, the short beak ascending, rather lateral. 
TYPE LOCALITY : South Carolina. 
DISTRIBUTION: South Carolina to Florida and Louisiana. 
ILLUSTRATION: Rep. Mo. Bot. Gard. 6: 1. 20. 
12. Sagittaria Mohrii J. G. Smith; C. Mohr, Bull. Torrey 
Club 24: 19. 1897. 
Plants partially emersed, 3-7 dm. tall; leaves erect or ascending, the blades linear to 
lanceolate, 5-15 cm. long, acuminate, often poorly developed or wanting, the phyllodia then 
stiff and three-sided ; scapes ascending, decumbent or declining, 3-angled, commonly shorter 
than the longer leaves; whorls of the inflorescence six to twelve, the lower three or four 
pistillate, with pedicels somewhat longer than those of the staminate flowers ; bracts thin, 
3-4 mm, long, united to about the middle; sepals oblong, becoming 5-8 mm. long, obtuse ; 
corolla hardly 1 cm. broad or sometimes 1.5 cm. broad; fruit-heads subglobose, 6-8 mm. — 
in diameter ; achenes cuneate, 2.5-3.5 mm. long, narrowly winged, with a low facial ridge, 
the slender beak horizontal. 
TYPE LOCALITY: Mobile, Alabama. te eee 
DISTRIBUTION: Georgia, Florida, Alabama, and Mississippi. 
ILLUSTRATION: Bull. Torrey Club 24: pl. 290. 
13. Sagittaria graminea Michx. Fl. Bor. Am. 2: 190. 1803. 
Plants emersed or submerged, 1-6 dm. tall; leaves represented by flat, linear, oblong, 
or linear-lanceolate phyllodia 5-30 cm. long and usually also by blade-tipped petioles, the 
blades linear, lanceolate, or elliptic, 3-15 cm. long, rarely with divergent basal lobes and 
hastate; scapes usually erect, simple, shorter than the leaves or overtopping them ; whorls 
of the inflorescence few and remote or some times numerous and rather approximate ; 
pedicels variable, but those of staminate and pistillate flowers often about equal in length ; 
bracts ovate, 3-7 mm. long, acute, united to about the middle; sepals ovate or oblong- 
ovate, becoming 4-6 mm. long; corolla commonly 1-2 cm. broad; filaments dilated, pubes- 
cent; anthers about as long as the filaments ; fruit-heads less than 1 cm. in diameter ; 
