514 XYR1DACEJE. (YELLOW-EYED GRASS FAMILY.) 
2-edged at the summit, smooth ; leaves linear-sword-shaped, flat ; 
head globular-ovoid (5 / -7 / long); lateral sepals obscurely lacerate- 
fringed above on the winged heel, rather shorter than the bract. (X. 
Jupacai, partly, Michx. X. anceps, Muhl.) — Sandy swamps, &c., 
from the Pine barrens of New Jersey and southward to S. New Eng¬ 
land (Rhode Island, Olneij). Aug. — Scape l°-2°high: leaves l n - 
4" wide. Petals pretty large, the claws turning brownish. 
3. X* lilllbriata, Ell. Scape somewhat angled, rather longer 
than the linear-sword-shaped leaves; head oblong (§' long); lateral 
sepals lanceolate-linear, nearly ticice the length of the bract , above con¬ 
spicuously fringed on the icing-margined keel, and even plumose at the 
summit. — Pine barrens of New Jersey, rare, and southward. Scape 
2° high. 
Order 127. ERIOCAULONACEiE. (Pipewort Fam.) 
Aquatic or marsh plants, usually stemless, with a tuft of 
fibrous roots, and a cluster of linear often loosely cellular 
leaves, naked scapes sheathed at the base, and bearing dense 
heads of monoecious or dioecious minute flowers in the axils 
of imbricated bracts, with a double persistent perianth, in m 
trorse anthers, and a 2-3-celled 2-3 -seeded pod (seeds 
and embryo as in the preceding order);— principally rep¬ 
resented by the genus 
ERIOCAULOX, Gronov. Pipewort. 
Flowers chiefly monoecious ; the central ones of the head ster¬ 
ile, bearing 4 or 6 stamens, the exterior fertile. Sepals 2 or 3, 
the lateral boat-shaped. Corolla tubular and 2 - 3 -lobed in the 
sterile fl. ; of 2 — 3 sepals in the fertile, each bearing a black gland. 
Style 2 — 3 parted. Pod loculicidai. — Leaves smooth, often pel" 
lucid. Scape simple, bearing a single head. Bracts and perianth 
whitened at the summit by a clothing of dense fine wool: outer 
bracts scarious, oftener empty and forming a kind of involucre. 
(Name compounded of epiov, wool, and Kav\os, a stalk, from the 
woolly scapes of many species : but in the following they are per¬ 
fectly smooth; and the stamens uniformly 4, the sepals, petals 
stigmas, and cells of the pod 2.) 
1. E. septangrulare, Withering. Leaves awl-pointed, taper¬ 
ing from a broadish flattened base, conspicuously cellular, pellucid, 
