GRAMINEJE. (GRASS. FAMILY.) 549 
4. L. hexandra, Swartz. Panicle contracted, erect, simple; spikelets 
lanceolate or oblong ; stamens 6.— In lakes and ponds, often in deep water, 
Florida, and westward. July and Aug. — Culms slender, 1°-6° long, mostly 
branching. Leaves narrow, rather rigid. Panicle 2/ — 3! long, exserted. Spike- 
lets short-fringed, 2" long, loosely imbricated. 
2. ZIZANIA, Gronov. Wirp Rice. 
Rank water grasses, with broad flat leaves, and large diffuse panicles of mo- 
neecious 1-flowered spikelets, on club-shaped jointed pedicels. Glumes none, or 
reduced to a cup-shaped ring at the base of the spikelet. Pales» 2, membrana- 
ceous, the lower one rough-awned in the pistillate spikelet. Stamens 6. Stig- 
mas elongated, brush-shaped. Grain cylindrical, free. 
1. Z. aquatica, L Lower portion of the panicle staminate and widely 
spreading, the upper pistillate and erect, with straight branches; awn straight, 
elongated; styles 2; grain linear. — Deep marshes and ponds, Florida, and 
northward. July. — Tana 49-89 high. Leaves rough beneath. Panicle 19— 
2° long. : 
2. Z. miliacea, Michx. Panicle diffuse; staminate and pistillate spike- 
lets intermixed; awns short; styles united, elongated ; leaves smooth, with 
rough edges; grain oval.— With the preceding. April and Me 
. 49 - 6? high. Loupe XML IINE p aes 
3. HYDROCHLOA, Beauv. 
A small floating or creeping grass, with short oblong-linear flat leaves, and 
simple spikes of small moncecious 1-flowered (white) spikelets, mostly included 
in the sheaths of the upper leaves. Spikelets 3-4 in a spike, the upper one 
staminate and exserted. Glumes none. Pales 2, hyaline, the lower one emar- 
ginate, the upper acute. Stamens 6. Styles 2: stigmas elongated. Grain 
ovoid, free. 
1. H. Carolinensis, Beauv. (Zizania fluitans, Michx.) — Floating in 
still water or creeping on muddy banks, Florida to North Carolina. July and 
Aug. — Culm filiform, branching, 40120 long. Leaves 1/-2! long... pe 
4. ALOPECURUS, L. FoxTAIL Quii: 
Flat-leaved grasses, with the 1-flowered spikelets closely crowded ie a simple 
spike-like cylindrical panicle. Glumes 2, compressed, boat-shaped, sharply 
keeled, united below, awnless. Lower palea compressed, awned on the back 
below the middle, the upper wanting. Stamens 3. Styles 2, rarely united be- 
low. Grain free, smooth and lenticular. 
1. A. geniculatus, L. Low; culms fecinling, bent at the lower joints} 
awn longer than the obtuse hairy glume. — Wet cultivated grounds, Florida and 
‘northward. - April. — Culms 6—12' high. Leaves 2' - 4' long, with the sheaths 
gon NES Spe re " 
