36 POACEAE. 



3. diloris ciliata Sw. Prodr. 25. 1788. 



Annual; culms decumbent, ascending or nearly erect, rather stiff, 8 dm. 

 long or less, smooth, mostly simple. Leaf-sheaths somewhat compressed, the 

 blades flat, long-acuminate, 7-20 cm. long; spikes few, stout, radiate, pecti- 

 nate, 4-7 cm. long, commonly curved; spikelets pale, approximate, the third 

 and fourth scales short-awned. 



Waste places and roadsides, New Providence : Cuba to St. Thomas, St. Croix, 

 Martinique and Grenada ; Jamaica ; South America. FRINGED CHLORIS. 



4. Chloris polydactyla (L.) Sw. Prodr. 26. 1788. 



Andropogon 'bar'batum L. PI. Jam. Pugil. 30. 1759. Not Chloris ~bar- 



lata Sw. 1797. 



Andropogon polydactylon L. Sp. PI. ed. 2, 1483. 1763. 

 Chloris ~barl)ata Nash, Bull. Torrey Club 25 : 443. 1898. 



Perennial; culms 7-12 dm. high. Leaves smooth, up to 6 dm. long, 5-10 

 mm. wide, long-attenuate. Spikes 6-25, spreading, 5-15 cm. long; spikelets, 

 exclusive of the awns, about 3 mm. long; scales 6, the 2 empty ones acuminate; 

 third scale pilose on the nerves, bearing an awn 3-4 mm. long; fourth scale 

 bearing an awn 2.5-3 mm. long; fifth and sixth scales awnless. 



Cultivated ground, New Providence, Hog Island. Eleuthera, Cat Island, Rum 

 Cay, Long Island : Florida ; Jamaica ; Antigua ; South America. MANY-SPIKED 

 CHLORIS. 



5. Chloris paraguaiensis Steud. Syn. PL Gram. 204. 1854. 



Chloris "barbata Sw. Fl. Ind. Occ. 1: 200. 1797. Not Andropogon 'bar- 

 'batum L. 1759. 



Annual; culms decumbent, ascending or erect, 3-6 dm. long, slender, 

 smooth. Leaf-sheaths compressed, the blades flat or folded, long-acuminate, 

 4-12 cm. long. iSpikes few or numerous, radiate, pectinate, 4-8 cm. long; 

 spikelets usually purple, the third, fourth and fifth scales filiform-awned. 



Waste places, New Providence, Grand Turk, and Inagua : tropical and warm 

 temperate regions. PARAGUAY CHLORIS. 



25. EUSTACHYS Desv. Nouv. Bull. Soc. Philom. 2: 188. 1810. 



Perennial grasses, with flat or folded, usually obtuse leaf -blades, and spicate 

 inflorescence, the spikes single, in pairs or 3-many and digitate. Spikelets 

 usually 1-flowered, rarely 2-flowered, sessile, crowded in 2 rows. Scales 4, 

 rarely 5, the 2 lower empty, persistent, unequal, keeled, the first generally acute, 

 the second oblong, truncate or 2-lobed at the apex, short-awned, the others awn- 

 less, mucronate, or short-awned, firmer than the empty scales, the third scale 

 enclosing a perfect flower and a palet, the fourth scale empty, or rarely en- 

 closing a staminate flower. [Greek, beautiful spikes.] About 6 species, 

 natives of tropical America, the following typical. 



1. Eustachys petraea (Sw.) Desv. Nouv. Bull. Soc. Philom. 2: 189. 1810. 

 Chloris petraea Sw. Prodr. 25. 1788. 

 Chloris Swartziana Doell. in Mart. Fl. Bras. 2s : 68. 1878. 



Culms 3-11 dm. tall; leaves 3 dm. long or less, 10 mm. wide or less, smooth; 

 spikes 3-11, usually 4-6, erect, 4-11 cm. long; spikelets about 2 mm. long; 

 scales 4, the second, exclusive of the awn, 1.5-1.75 mm. long, 2-toothed at the 

 apex, the teeth triangular, acute or obtusish, the awn about 0.5 mm. long; 

 third scale about 2 mm. long, in side view elliptic and about 1 mm. wide, the 



