502 ERIOCAULONACEJE. (PIPEWORT FAMILY.) 
a 
tumid and dark brown at the base. Spikes 1'-11'long. Petals 9" long, ex- 
panding at midday. 
* * * Sterile filaments beardless: leaves filiform. 
15. X. tenuifolia, n.sp. Smooth ; scape slender, terete or I-angled ; leaves 
filiform or bristle-like, compressed ; spikes ovoid, few-flowered ; lateral sepals 
lanceolate, the narrowly winged keel cut-serrate ; petals obovate ; seeds linear- 
oblong, smooth. — Open grassy pine-barren swamps, Florida to North Carolina. 
July - Sept. — Seapes clustered, 10/-12! high. Leaves 4'—6' long. Spikes 
2! —4" Jong. Petals 3" long. 
16. X. Baldwiniana, R. & S. (X. juncea, Baldw.) “Root perennial; 
scape terete, sheathed at the base, 6' — 12/ high ; leaves 4'— 8! long, terete, hol- 
low, acute; head oval; bracts nearly round ; calyx about as long as the bracts, 
the keel slightly toothed, filaments naked." Baldwin in Ell. — Damp pine bar- 
rens, near St. Mary's, Georgia. May and June. (*) 
ORDER 158. ERIOCAULONACEJE. (Pirewort Fay.) 
Perennial chiefly stemless marsh herbs, with narrow tufted leaves, and 
minute moneecious or diccious flowers, collected in a dense hairy chaffy- 
bracted head. — Stam. Fl. Sepals 2-3. Corolla tubular, bilabiate or 
3-toothed, or sometimes wanting. Stamens 2-6: anthers introrse. — 
Pist. Fl. Sepals and petals 2-3. Ovary 2—3-celled, with a single 
orthotropous ovule in each cell. Style 2—3-parted. Capsule loculici- 
dally 2—3-valved, 1—3-seeded. Embryo minute at the apex of the 
albumen.— Leaves concave and partly clasping at the base. Scape 
furrowed and commonly twisted, with a spathe-like sheath at the base. 
Exterior scales broader, empty, and involucrate. Flowers fringed with 
white club-shaped hairs. Corolla white. 
Synopsis. 
1. ERIOCAULON. Stamens 4. Anthers2-celled. Style2-parted. Corolla 2-lipped. 
2. PEEPALANTHUS. Stamens 3. Anthers 2-celled. Style 3-parted, the lobes entire. 
3. LACHNOCAULON. Stamens3. Anthers 1-celled. Style 2-3-parted, the lobes entire, or 
2-cleft. 
1. ERIOCAULON, L. Prreworrt. 
"adis moncecious, each in the axil of a scale-like bract. Sepals 2-3- Co- 
rolla of the staminate flowers tubular, 2-lipped or S-lobed; of the pistillate 
flowers 2~3-petalous, Stamens 4 or 6: anthers 2-celled. Style 2-9- d 
| Capsule 2- 3-celled, 1-3-seeded. — Scapes single or eie 
hort and villous rootstock. Lobes of the corolla furnished 
inner face, commonly bearded with club-shaped sere 
