88 A FLORA OF MANILA 



lanceolate, acuminate, 6 to 14 cm long, 3 to 5 mm wide, the sheaths loose, 

 sparingly hirsute. Inflorescence exserted, of from 3 to 6 ascending or 

 spreading spikes about 10 cm long, whorled at the apex of the stem. Spike- 

 lets 3 mm long, oblong-lanceolate, in pairs, one sessile, one pedicelled, on 

 the lower surface of the flattened rachis, the empty glumes of the pedicelled 

 spikelets densely ciliate on the marginal nerves with numerous, long, soft, 

 spreading, often hooked hairs. 



Roadsides and waste places, fl. more or less all the year and rather com- 

 mon about Manila, certainly introduced. India to Polynesia. 



2. D. sanguinalis (L.) Scop., var. australis Thwaites. 



A weak, slender, ascending, nearly glabrous grass usually less than 

 0.5 m high, the basal parts of the stems more or less decumbent. Leaves 

 thin, acuminate, 6 to 10 cm long, 3 to 5 mm wide. Spi"kes slender, 2 to 

 4, ascending or spreading, 4 to 7 cm long, whorled at the apex of the 

 stem. Spikelets oblong-lanceolate, 3 mm long, in pairs, one sessile and 

 one pedicellate on the under surface of the flattened rachis, glabrous or 

 nearly so. 



In thickets etc., fl. all the year, widely distributed in the Philippines, 

 variable. Tropical and temperate regions of the world (species), the 

 variety India to Malaya. 



3. D. consanguinea Gaudich. 



Stems up to 1 m in length, the lower parts usually geniculate and 

 somewhat prostrate. Leaves up to 20 cm in length, 6 to 12 mm wide, 

 the sheaths usually lax, with scattered, long, stiff, white hairs arising 

 from small papillae. Inflorescence long-exserted, consisting of from 6 

 to 18, 8 to 15 cm long spikes, somewhat scattered, fascicled, or whorled 

 along the upper part of the rachis. Spikelets oblong-lancieolate, about 

 3 mm long. 



In thickets and open places, fl. Nov.-March and probably in other 

 months ; widely distributed in the Philippines. . India to Malaya and 

 Polynesia. 



4. D. longiflora (Gmel.) Pers. 



A slender grass, the basal parts usually procumbent and rooting, the 

 flowering stems erect or ascending, 10 to 30 cm high. Leaves narrowly 

 lanceolate, acuminate, 2 to 6 cm bng, 2 to 5 mm wide. Spikes 2 to 4, 

 whorled at the apex of the stem, spreading or ascending 3 to 5 cm long, 

 grayish-white. Spikelets pale-green, rarely purplish, 1.5 mm long, in 

 pairs, one pedicellate and one sessile, the first glume usually wanting or 

 very minute. 



In waste places, yards, etc., occasional, fl. Aug.-Dec, widely distrib- 

 uted in the Philippines. India to China and Malaya. 



5. D. violascens Link. 



A slender, erect or ascending, usually tufted grass 40 to 90 cm high. 

 Leaves narrowly lanceolate, acuminate, 3 to 10 cm long, 3 to ,6 mm wide, 

 ascending or spreading, mostly basal or subbasal. Spikes slender, grayish, 

 3 to 8, whorled at the apex of the stem, ascending or spreading, 5 to 12 

 cm long. Spikelets 1.5 mm long, crowded, in pairs on the lower side of 

 the slender rachis, the flowering glume when mature usually dark-purple. 



In fallow lands, borders of thickets etc., Masambong, fl. Aug.-Nov.; 

 widely distributed in the Philippines. Tropics generally; 



