504 CYPERACEZ. (SEDGE FAMILY.) 
sule 2—3-celled. — Habit of the two preceding.  Bracts and sepals blackish, 
fringed with club-shaped hairs. 
1. L. Michauxii, Kunth. Leaves linear (1'- 2! long), hairy, becoming 
smoothish; scapes slender, hairy, 4-furrowed (1° high); heads globose; bracts 
and sepals spatulate, obtuse, fringed with white hairs; divisions of the style 3, 
each 2-cleft. (Eriocaulon villosum, Mich.) — Low grassy pine barrens, Florida 
to North Carolina. May and June, growing in tufts. — Heads 2" wide. 
2. L. glabrum, Kornicke. Leaves linear, smooth (1/ long) ; scapes numer- 
ous, smooth, 5-furrowed (3'—5' high); heads globose, becoming oblong, dark 
brown; bracts and sepals spatulate-obovate, obtuse, slightly fringed with short 
brownish hairs ; divisions of the style 3, entire. — Sandy springy places, St. An- 
drews Bay, West Florida. Oct.— Scapes 30 or more in a cluster. Heads 3" 
long, not unlike those of Eleocharis obtusa. 
ORDER 159. CYPERACEJE. (Sener FauILY.) 
Slender herbs, with simple solid mostly 3-angled stems (culms), and 
grass-like leaves, with closed sheaths. Flowers spiked, each in the axil 
of a single (rarely 2-4) scale-like bract (scale). Perianth composed of 
hypogynous scales or bristles, or none. Ovary 1-celled, with a single 
erect anatropous ovule, forming in fruit a lenticular or 3-angled achenium 
(nut), which is often crowned with the persistent jointed base of the style 
(tubercle). Stamens 1—12: anthers erect. Style 2— 3-cleft or parted. 
Embryo minute at the base of the albumen. i 
Synopsis. 
Teer IL. CYPEREJE.— Flowers perfect: spikelets 1- many-flowered: scales one to 
each flower, imbricated in 2 rows: perianth bristly, or none. 
* Perianth none: nut beakless. 
1. CYPERUS. Spikelets few - many-flowered: inflorescence terminal. 
2. KYLLINGIA. Spikelets 1-flowered : inflorescence terminal, eapitate. 
* * Perianth bristly : nut beaked. 
3. DULICHIUM. Spikes lateral and terminal: spikelets many-flowered. 
Tree: l. LIPOCARPH EX. — Flowers perfect: spikes many-flowered : seales 2-4 
to each flower; the exterior ones imbricated in many rows: perianth none. i 
4. HEMICARPHA. Inner scale 1: inyoluere mostly 1-leaved, erect. 
5. LIPOCARPHA. Inner scales 2: leaves of the involucre 2 or more, spreading- 
‘Tame IT. SCIRPEJE. Flowers perfect: spikes commonly many Savarese adim 
-~ to each flower, imbricated in several (rarely 2) rows, all fruitful, or the lowest 
perianth bristly, hairy, or wanting. 
___ * Perianth of bristles, alternating with 3 stalked seales. = 
* Perianth bristly, occasionally wanting. - sali 
‘tubercled : culms leafless, sheathed at the base, bearing ome tem^ — 
t 
