48 MISSOURI BOTANICAL GARDEN. 
winged on both margins, the resin passages more promi- 
nent.— From Delaware to Florida, Texas and Mexico.— 
Plate 16. 
Specimens examined from Maryland (Canby, 1872, Saulsbury; Rusby, 
1889, Stockton); Delaware (Canby, 1887, Seaford); Virginia (Rugel); 
North Carolina (McCarthy, 1885, Wilmington); South Carolina 
(Ravenel, Santee Canal); Carolina (Pursh, achenia from the type, in 
Herb. Engelmann, ex Herb. Hooker); Florida (Deane; Chapman, Apa- 
lachicola; Canby, 1879, Hibernia); Alabama (Mohr. 1879); Mississippi 
(Hilgard, 1859, sea coast marshes; Tracy, 2175, 1893, Biloxi); Louisiana 
(Lindheimer, 1839, Lake Pontchartrain; Dr. Hale); Texas (Lindheimer, 
1842, Galveston Bay) ; Mexico (Rovirosa, 675, 1889). Many Mexican and 
Central American specimens have connate bracts, but are in other par- 
ticulars identical with this variety. 
S. ampieua n. sp.— S. lancifolia Kellerman Anal. Flora 
Kansas, 178 (1888). 
Erect, 3 to 6 dm. high; leaves lanceolate, long-acute, 
gradually narrowing to the base, not decurrent, 12 to 20 
em. long, 5-nerved; scape erect or ascending, simple or 
branching from the lowest whorl, equaling or exceeding 
the leaves; verticils numerous, 8 to 12 or more; bracts 
lanceolate, acuminate, connate at the base, sparsely 
papillose on the nerves, 10 to 15 mm. long; fertile 
pedicels ascending, 2 to 4 em. long, longer than the 
sterile; stamens 20 to 25, the slender glabrous filaments 
longer than the oblong anthers; fruiting head depressed 
globose, 12 to 15 mm. in diameter; achenium 2 mm. 
long, narrowly falcate, almost beakless, very narrowly 
winged on both margins, the sides smooth, with 2 or 3 
resin passages.— In ponds. Central Kansas and Oklahoma. 
Apparently first collected by Dr. Butler, 1875, in the Indian 
Territory. Also collected in McPherson Co., Kansas, by 
J. E. Bodin, July, 1887; and by A.S. Hitchcock, July 29, 
1892, in fruit. 
This species has been distributed as S. lancifolia but 
differs in having papillose, connate, lanceolate bracts, 
glabrous filaments, and almost beakless and wingless 
falcate achenia.— Plate 17. 
22 
