GRAMINEAE . 103 



In open grass lands, Caloocan to La Loma, fl. all the year. Known 

 only from Luzon. 



38. CYNODON Persoon 



Perennial, slender, creeping grasses, the leaves narrow, flat. Spikelets 

 small, 1- or 2-seriate, unilateral on 3 to 7, slender, digitately arranged 

 spikes. Glumes 3, the first and second empty, thin, keeled, the third 

 broader, thin, awnless. Grain oblong, free within the glumes. (Greek 

 "dog" and "tooth.") 



Species 5 or 6, mostly Australian, 2 in the Philippines. 



Spikes 3- or 4, mostly less than 3 cm long; flowering stems mostly less than 



20 cm high.. 1. c. dactylon 



Spikes 5 to 7, 8 to 10 cm long; flowering stems about 40 cm high. 



2. C, areuatus 



1. C. dactylon (L.) Pers. Grama (Sp.-Fil.) ;' Bermuda Grass. 



Stems prostrate, usually widely creeping, branched and rooting at the 

 nodes, sending up erect, short, flowering branches usually less than 20 cm 

 high. Leaves 1.5 to 3 cm long. Spikes 3 or 4, 2 to 5 cm long, spreading, 

 green or purplish. Spikelets imbricate, about 1.5 mm long. 



In lawns, along roadsides, and in waste places generally, fl. all the year; 

 throughout the Philippines, possibly introduced. In all warm countries. 



2. C. areuatus Presl. 



An erect or spreading and ascending grass, the flowering stems 35 to 

 60 cm high, sometimes geniculate and rooting at the lower nodes. Leaves 

 narrowly lanceolate, 6 to 15 cm long, 4 to 5 mm wide. Spikes 5 to 7, 

 spreading, usually green, 8 to 10 cm long. Spikelets 2 mm long. 



In open grass lands, San Pedro Macati, fl. Aug.-Jan.; rather widely dis- 

 tributed in Luzon. Endemic. 



39. CHLORIS Swartz 



Erect, annual or perennial, usually tufted grasses with flat or convolute 

 leaves. Spikelets 2-Beriate, on one side of the digitately arranged spikes, 

 the'rachilla sometimes produced beyond the third glume and bearing one 

 or more empty glumes, awned. First and second glumes unequal, acute or 

 mucronate, or the second awned, the third glume acute or cleft, usually 

 awned. 



Species about 40, mostly tropical, two in the Philippines, one apparently 

 introduced. (Named for Chloris, the goddess of flowers.) 



1. C. BARBATA (L.) Sw. 



A tufted, erect grass 0.3 to 1 m high. Leaves flat, 10 to 20 cm long, 

 linear-lanceolate. Spikes usually ascending, purple, 5 to 20, strict or 

 flexuous, 5 to 8 cm long. Spikelets 2 to 2.5 mm long, with 3 slender awns. 



Very common in open waste places, fl. all the year; in and about towns 

 throughout the Philippines but certainly introduced. Tropics generally, 

 but probably a native of tropical America. 



40. ELEUSINE Gaertner 



Annual or perennial tufted grasses. Leaves flat. Spikelets 8- to 12- 

 flowered, all perfect (except the terminal one), sessile, 2- or 3-seriate, 

 secund, imbricate, pointing forward, foirming digitate or whorled spikes, 

 laterally compressed, not jointed at the base; rachilla continuous between 



