HITCHCOCK AND CHASE GRASSES OE THE WEST INDIES. 361 



clothed, at least toward the beaked apex, with thick uncinate hairs ; blades 

 with tine transverse veins Ijetween the longitudinal nerves, petioled (the petiole 

 with a single twist reversing the upper and under surfaces of the blade), the 

 nerves running from midnerve to margin. 



Culms creeping at base 2. P. parvifolius. 



Culms erect or nearly so. 



Fruit pubescent only at tip, slightly exceeding the glumes. 



3. P. latifolius. 



Fruit pubescent all over, 2 to 3 times as long as the glumes 1. P. glaber, 



1. Phanis glaber H. B. K. Nov. Gen. & Sp. 1: 196. 1816. 

 Pharus brasiliensis Raddi, Agrost. Bras. 21. 1823. 



Pharus lancifolhis Desv. ; Hamilt. Prodr. PI. Ind. Occ. 8. 1825. 



An erect glabrous perennial 50 to 75 cm. tall, with flat oblanceolate acuminate 

 blades commonly 15 to 25 cm. long and 3 to 5 cm. wide, and large open fragile 

 panicles, the few branches stiffly ascending or spreading, the appressed oblong 

 brown spikelets about 1 cm. long, the fruit densely clothed with hooked hairs, 

 the panicles readily breaking up, the pieces attaching themselves by the hooked 

 hairs to passing objects. 



Rich woods, Mexico and West Indies to Brazil. Originally described from 

 Venezuela ; P. brasiliensis described from Rio de Janeiro and P. lancifolius from 

 the Antilles. Found throughout the Greater Antilles and in the Lesser Antilles 

 as far south as St. Vincent. , 



2. Pharus parvifolius Nash, Bull. Torrey Club 35: 301. 1908. 



Creeping at base, the blades on the average smaller and less broadened 

 upward, otherwise like the preceding. 



Rich woods. West Indies. Originally described from Haiti, the type being 

 Nash & Taylor 1482, collected at " Les Roches, a few miles to the west of 

 Plaisance." 



Cuba (Banao Hills, Santa Clara, and Loma del Jaguey, Oriente), Jamaica 

 (Ramble, near Claremont), Haiti, Porto Rico (Arecibo), and Trinidad (Taba- 

 quite and Tamana). 



3. Pharus latifolius L. Syst. Nat. ed. 10. 2: 1269. 1759. 

 Pharus ovalifolins Desv. ; Hamilt. Prodr. PI. Ind. Occ. 8. 1825. 



Similar to no. 1, the blades on the average broader, the spikelets longer, the 

 summit of the fruit tapering. 



Rich woods. West Indies to Brazil. Sometimes called " wild oats." Origi- 

 nally described from Jamaica ; P. ovalifolins described from the Antilles. 



Cuba (Province of Pinar del Rio), Jamaica (Bath), Haiti, Santo Domingo, 

 Guadeloupe, Martinique, St. Vincent, Grenada, and Trinidad. 



57. LUZIOLA Gmel. 



Pistillate and staminate spikelets in separate panicles; glumes wanting; 

 caryopsis with a thick hard pericarp. 



Blades 7 to 10 mm. wide; inflorescence many-flowered 3. L. spruceana. 



Blades 1 to 3 mm. wide; inflorescence few-flowered. 



Fruit 2 mm. long 2. L. bahiensis. 



Fruit 1.5 mm. long 1. L. peruviana. 



1. Luziola peruviana Gmel. Syst. Nat. 637. 1791. 



Similar to L. bahiensis but the inflorescence more delicate and the spikelets 

 smaller, the fruit abont 1.5 mm. long. 



