OR AMINE J!. 415 



2. S. juncea, Willd. Rusk-like Cord- Grass. 



Culms\o\r and slender; l'-i res narrow and rush-like, strongly in-volute; tpxkesl 

 to 5, short- peJ uncled; glumes acute, rough-serrulate on the Lack ; palece rather 

 obtuse ; styles distinct nearly to the has?. 



Bait marshes Mid river l.anl.s. July. Ausr. Root creeping, forming thick tufts. 

 Culm 1 to 2 feet high, rigid, tniooth. Leaves 6 to 10 inches long, smooth, Spik*$ 

 B^u^ily 3. 



15. ATIIEROPOGON, Muh'1. 



Or. tiher, a bristle, and pojoa, a beard; the beards being bristle-like. 



Spikelets one-sided, nearly sessile, alternate, 2 or 3- 



flowered, the tennin J flower abortive. Glumes 2, mem- 



bran ace on*, unequal ; the Igwei shorten. LcwlB pallje 3= 



nerved, 3-toothed at the apex, the upper o -nerved and 2- 

 toothed. Abortive flowers pedicellate, neutral. Sta» 

 MENS 3. — Spikes short, ar ranged in a raceme. 



A. APLUDOIDES, Muhl. Bristls-bcard Grass. 



Culms erect, in tufts ; sheaths commonly hairy ; leaves narrow, acuminate; spiksa 

 linear oblong, almost sessile, horizontal, numerous or rather remote, forming a 

 strict raceme ; racha tipped with a slender naked point. 



Dry rocky banks, rare. Aug. Per. Culm 1 to 3 feet high. Leaves lanceolate, 

 attenuate at the end. Spii.cs 20 to 40 en shcrt riat peduncles. Anthers briga't 

 ltd. 



16. CYNODON, Richard. Bermuda Grass. 



Gr. kuon, a dog, and odons, a tooth. 



Spikelets 1-flowered, with a naked rudiment of a second- 

 fiower, imbiicate-spiked on one side of a flattish raehis, 

 Glumes keeled, pointless, somewhat unequal. Palece 

 pointless and awnless, the lower larger, boat-shaped. Sta- 

 mens o. — Low diffusely-branched and creeping perennials, 

 wtth short Jluttish leaves, and usually digitate spikes at the naked 

 summit of the flowering culms. 



G. Dactylon, Pers. Dog's-tooth Grass. 



Bpikes digitate, 3 to 5; palece smooth, longer than the blunt rudiment. 

 Sandy waste places; introduced. July, Aug. Culm creeping, a foot or mors 

 Long, prostrate. Stigmas dark purple. 



IT. ELEUSINE, Gsert. Crab-Grass. Yard-Grass 



Or. Eleusin, the town where Ceres, the goddess of harvests, was worshipped. 



Spikelets sessile, 2 to 6-flowered, with a terminal naked' 

 endiment. Glumes membranaceous, pointless, shorter than 

 the flowers. Pale^ membranaceous, awnless and pointless, 

 the lower ovate, keeled,, larger than the upper. Stamen* 3, . 



