636 GRAMINE^. (gHASS FAMILY.) 



tile with 3 stamens; culm and panicle elongated {4°-8° high). — Sand-hills 

 on the sea-shore, S, Virginia and southward. 



2. IT. latifdlia, Michx. Leaves broad and flat (nearly 1' wide) ; spikdets 

 at length o6/oH^, hanging on long pedicels ; flowers acute, ciliate on the keel, all 

 but the lowest perfect and monandrous. — Shaded rich hillsides, S. Pennsylrauia 

 to Illinois and southward. Aug. — Culm 2° - 4° high ; panicle loose. 



* * Spikelets small : panicle contracted and wand-like : perfect flowers long-pointed, 



3. IT. gracilis, Michx. Spikelets short-pedicdled (2" -3" long), broadly 

 wedge-shaped, acute at the base, i-8-flowered; the flowers ovate and diver- 

 gently beaked, long, the lowest one neutral. — Sandy soil, from Long Island to 

 Virginia, near the coast, and southward. Aug. — Culm 3° high, slender. 



40. PHRAGMITES, Trin. Reed. (PI. 11.) 



Spikelets 3 - 7-flowered ; the flowers rather distant, silky-villous at their base, 

 and with a conspicuous silky-bearded rhachis, all perfect and 3-androus, except 

 the lowest, which is either neutral or with 1-3 stamens, and naked. Glumes 

 membranaceous, shorter than the flowers, lanceolate, keeled, sharp-pointed, very 

 unequal. Palets membranaceous, slender; the lower narrowly awl-shaped, 

 thrice the length of the upper. Squamulte 2, large. Styles long. Grain free. 

 — Tall and stout perennials, with numerous broad leaves, and a large terminal 

 panicle. (0pay/xtVeff, growing in hedges, which this aquatic Grass does not.) 



1 . P. coramtlllis, Trin. Panicle loose, nodding ; spikelets 3 - 5-flow- 

 ered; flowers equalling the wool. (Arundo, L.) — Edges of ponds. Sept. — 

 Looks like Broom-Corn at a distance, 5° - 12° high : leaves 2' wide. (Eu.) 



4i: AKUNDINARIA, Michx. Cane. (PI. 11.) 



Spikelets flattened, 5- 14-flowered; the flowers somewhat separated on the 

 jointed rhachis. Glumes very small, membranaceous, the upper one larger. 

 Palets herbaceous or somewhat membranaceous ; the lower convex on the back, 

 many-nerved, tapering into a mucronate point or bristle. Squamute 3, longer 

 than the ovary. Stamens 3. Grain oblong, free. — Arborescent or shrubby 

 Grasses, simple or with fascicled branches, and with large spikelets in panicles 

 or racemes ; the flowers polygamous. (Name from arunt?o, a reed.) 



1. A. lliacrosp6rina, Michx. (Large Cane.) Culms arborescent, 

 10° -20° high, rigid, simple the first year, branching the second, afterwards at 

 indefinite periods fruiting, and soon after decaying; leaves lanceolate (l'-2' 

 wide), smoothish; panicle lateral, composed of few simple racemes; spikelets 

 purple, erect; lower palet lance-ovate, pubescent, fringed (8" long). Chapman, 

 under A. gigantea. — Eiver-banks, S. Virginia? Kentucky? and southward, 

 forming canebrakes. 



2. A. t6cta, Muhl. (Small Cane.) Culms slender, 2°- 10° high, branch- 

 ing ; leaves linear-lanceolate (9"- 1' wide), roughish, the sheaths bearded at the 

 throat ; spikelets solitary or in a simple raceme at the summit of the branches, 

 or frequently on leafless radical culms ; lower palet (6" long) ovate-laneeolate, 

 smooth, fringed on the margins. Chapman. (Arundo tecta, Walt.) — Swamps 

 and moist soil, Virginia, Illinois, and southward. April. 



