52 TweEnty-sEconD ANNUAL Report on Stare CABINET. 
x 
SPECIES GROWING SPONTANEOUSLY IN THE STATE AND NOT BEFORE 
REPORTED. 
ELATINE CLINTONIANA, Sp. 100. 
Slender, erect ; leaves cuneate oblong or narrowly obovate ; jflow- 
ers with conspicuous rose-red or purplish, spreading petals ; seeds 
slightly curved, ribbed and pitted. 
Stems czespitose, slender, simple, erect, abundantly rooting at 
the base, 3’—10” high ; leaves sessile, v arying from oblong to oblan- 
ceolate and narrowly ‘obovate, obtuse, tipering to the base, rather 
cana very obscurely nerv ed, entire, minutely whitish elandular- 
dotted ; flowers sessile, single i in the axils of the leaves, dimerous; 
sepals oblong- ovate, obtuse, shorter than the petals and about one- 
third as broad; petals broadly ovate or suborbicular, obtuse, 
spreading, twice the length of the ovary, rose-red or purplish ; sta- 
mens longer than the sepals, scarcely as long as the petals, with 
globose anthers ; stigmas nearly sessile, contiguous, persistent ; cap- 
sule subglobose often slightly depressed at the apex, usually four to 
eight seeded ; seeds nearly straight, longitudinally ribbed, pitted 
in rows. 
Rocky shores of Bowman’s pond, Sandlake, Rensselaer county. 
July and August. 
This plant forms quite extensive and rather dense turfs or 
patches. The smaller forms have three or four pairs of leaves, 
narrow and nearly uniform in width, and one or two purplish red 
flowers, all clustered or closely placed at the top of the stem, the 
lower part of which is naked, or furnished with long, slender root- 
lets. The larger plants have the leaves bro ader, more distantly 
inserted, more “tapering toward the base, the flowers more numer- 
ous and paler or rose-red. A cross section of the stem reveals 
eight tubes formed by thin dissepiments radiating from the center. 
“The distinctive characters of the species, when compared with 
E. americana, are found in its more dense, erect mode of growth, 
smaller size, more slender stems, more narrow leaves, and especially 
in its conspicuous, spreading, bright. colored petals. The seeds 
also furnish distinctive but microscopic characters. They are 
shorter, less curved, more distinctly ribbed longitudinally, less 
wrinkled transve rsely, the impressions shorter, more regular in out- 
line and more distantly placed, the interspaces being usually almost 
as wide as the impressions. In the seeds of £. americana, the 
interspaces are narrow and more elevated, so that when viewed 
under the microscope by transmitted light, these elevations or 
wrinkles appear along the margins of the seed like rows of 
papillee. 
It gives me great pleasure to dedicate this neat little species to 
my much esteemed friend and active co-laborer in botany, the 
Hon. G. W. Clinton. 
ST ——— oo 
