300 
- Studies in the Botany of the Southeastern United States.—ll. 
By Joun K. SMALL. 
(PLATE 212.) 
IsOETES MELANOSPORA Engelm. Trans. St. Louis Acad. Sci. 3: 395 
(1877). 
Up to the present time this /svefes has not been known sed 
occur at any but its original locality, Stone Mountain, Georgia, 
where Mr. Canby discovered it in 1869. During the pas 
season I found it growing on Little Stone Mountain, Georg!@, 
in shallow pools in the granite rocks, just as it occurs at the 
original station. 
XYRIS NEGLECTA Nn. sp. 
Annual, mostly strict, slender. Root fibrous; scapes USU> 
ally two to four, sometimes one, 1-4 dm. long, ribbed _ ith 
ten ridges, eight of which are arranged in pairs, two on pers 
side of a line connecting the two most prominent ones, spirally — 
twisted and sometimes slightly flexuous when old; sheath 
of the scape 4-6 cm. long, more or less reddish at the base ; 
leaves linear, 3-10 cm. long, .3~-.5 cm. broad, acute, straight oF 
slightly curved, rather erect, 4-7-ribbed ; flowers bright yellow, 3 
mm. broad; petals irregularly erose; fruiting spike ovoid, 4-9 
mm. long, acute; the scales orbicular-obovate, 3-5 mm. long, 
entire at the apex, imbricated in 6—7 rows; lateral sepal 4 pare 
long, fimbriate-winged for {1% of its length from the ure i 
seeds oblong, pointed’ at both ends, irregular in outline, furnish 
with tails equal to or longer than themselves. 
Found by Mr. A. H. Curtiss growing in moist pine woods 
about Jacksonville, Florida, on August 11 and October 39, 1893; 
in company with Xyris ambigua, to which species it is related, 
but easily separated by its smaller size, shorter leaves and more © 
slender spikes so far as the outside characters are concerned. - 
The lateral sepal is also very differently crested and the seeds are 
smaller, narrower and more pointed. One of its strongest char- 
acters is the peculiarly ridged scape as described in the above . : 
diagnosis. The scape of X. améigua is oblong in cross section eS 
and strongly two-ridged. : 
