SAGITTARIA AND LOPHOTOCARPUS. 47 
S. nancrroxia Linn. Amoen. 5: 409(1760). WS. lancifolia 
var. major Micheli, in DC. Monog. Phan. 3; 73 
(1881). 
Rigid, erect; leaves 4 to 9 dm. high, the blades coria- 
ceous, 30 to 60 cm. long, 5 to 10 or 20 cm. wide, acute or 
long acuminate, 5-to 9-nerved, gradually narrowing to the 
base and decurrent into the petiole, pseudo-penninerved 
(the primary nerves separating from the thickened midrib 
above the base), scape erect, striate, branched, exceeding 
the leaves, often 1.5to 2m. high; verticils very numerous; 
fertile pedicels ascending, shorter than the sterile, 1 to 3 
cm. long; bracts glabrous, free, ovate, acute or acuminate, 
10 to 25 mm. long, before flowering enfolding the buds at 
the apex of the scape, with the free tips turned outward ; 
flowers ample; sepals smooth; petals obovate, white ; sta- 
mens numerous; anthers oblong, twisted after dehiscence, 
about as long as the cobwebby-pubescent filaments; stam- 
inodia present in the pistillate flower; achenium 2 to 
3 mm. long, winged on both margins, a short vertical resin 
passage on each side; beak short.— From Florida (and 
Texas, fide Micheli) southward, throughout the West 
Indies, Mexico, Central and South America. Very variable 
as to its achenial characters, and the length of bracts and 
stamens.— Plate 16. 
Specimens examined from Florida (Canby, 1869, Hibernia; Powell, 
1872; Keeler, Jacksonville; Bates, 1889, Merritts Island; Simpson, 1890; 
Hulst, 1891, De Land; Curtiss, 2742, Jacksonville; Buckley; Burrowes). 
S. LANCIFoLIA FALCATA (Pursh) J. G. Smith, in Mem. 
Torr. Bot. Club, Vol. 5: 25 (1894). WS. falcata 
Pursh, Fl. Am. Sept. 397 (1814). 
Rigid, erect, smaller than the species; leaves narrower, 
nerves 3 to 5; scape less branched, often simple; fertile 
pedicels shorter, 8 to 20 mm. long; bracts short, 5 to 8 
mm. long, ovate, obtuse or sub-acute, more or less granu- 
lar papillose on the back; filaments cobwebby pubescent, 
longer than the anthers; achenium about 2 mm. long, 
21 
