NEW AND LITTLE KNOWN SPECIES. 115 
ing with the flower, 1 to 2mm. wide, 1.5 to 2.5 dm. long; 
scape slender, 1.5 to 2 dm. long; flower solitary, erect; 
spathe 2 to 2.5 cm. long, tubular for half its length, slightly 
exceeding the pedicel, entire at the apex; perianth erect, 2 
cm. long, the segments oblanceolate, acute, bright yellow; 
tube 5 mm. long; stamens inserted at the throat, about 
half as long as the perianth segments; style equaling the 
stamens; stigma capitate, 3-lobed. Collected at Corpus 
Christi, Texas, summer of 1894, by G. C. Nealley. It is 
intermediate between Z. Texana, Herb. and Z. Longifolia, 
Hemsl. For purposes of comparison I have figured flowers 
of these latter species on the same plate. The pedicel 
length is a very constant character in all the herbarium 
specimens of the two older species which I have examined, 
and it is one of the principal specific characters used by 
Baker in his monograph of the Amaryllidaceae. Hence, I 
have considered it best to separate out this material as a 
new species.—Plate 52. 
SaGiTTaRIia. 
Since publishing the monograph of the North American 
species of Sagittaria and Lophotocarpus, I have received 
material of the following new species of Sagittaria from 
Florida. 
§§§ Integrifoliae. 
+ ++ Achenium obovate, with a short lateral beak; filament dilated 
at the base, pubescent; bracts connate, glabrous. 
S. ISOETIFORMIS, n. sp. 
Monoecious, 1 dm. high; leaves slender, terete through- 
out, or dilating into a short linear blade 1 to 2 mm. wide; 
scape simple, slender, erect, equaling the leaves, with 
mostly a single verticil; bracts ovate, acute, 2 to 3 mm. 
long, connate; fertile pedicels shorter than the sterile, very 
slender, 15 to 18 mm. long; sterile pedicels filiform, 2 to 3 
cm. long; stamens about 9; anthers equaling the filaments ; 
achenium about 1 mm. long, dorsally crested, with an arched 
