GRAMINEAE 77 
of from 2 to many, slender, more or less fragile, jointed, digitately arranged 
spikes. Spikelets solitary, sessile, not in pairs, 1-flowered. Glumes 4, the 
first the largest, the second keeled, 3-nerved, the third small, hyaline, the 
fourth smallest, hyaline, long-awned. Stamens 2 or 38. (Greek “jointed” 
and “‘stem’’.) 
Species about 12 in the tropics of the Old World, 3 in the Philippines. 
1. A. quartinianus (A. Rich.) Merr. 
A weak, slender, ascending or rambling, somewhat branched grass 
reaching a length of 1 m or less. Leaves lanceolate, 2 to 5 cm long. 
Inflorescence exserted, of 2 or 3, rarely more, slender, 2 to 5 cm long, green 
or purplish spikes, the joints of the rachis white-pilose. Spikelets lanceo- 
late, acuminate, 5 to 6 mm long, rather distant, scabrid, the awn slender, 
geniculate, longer than the spikelet. 
In dry thickets and open places, San Pedro Macati, fl. Dec._Jan.; other- 
wise known in the Philippines only from northern Luzon. India to Abys- 
sinia. 
8. POLLINIA Trinius 
Annual or perennial erect grasses, the spikes subdigitately fascicled at 
the ends of the stems, hairy, the rachis fragile. Spikelets in pairs, one 
sessile, one pedicelled, 1-flowered, or the sessile one 2-flowered. Glumes 4, 
the first flattened or concave, margins narrowly inflexed, the second as long 
as the first, keeled, acute, the third hyaline, ciliate, the fourth very short, 
hyaline, or reduced to the dilated base of the long, twisted, exserted awn. 
(In honor of C. Pollini; an Italian botanist.) . 
Species about 30, tropical and subtropical parts of the Old World, 10 in 
the Philippines, 1 in our area. 
1. P. argentea Trin. 
A tufted, erect, unbranched, rather slender grass 20 to 60 cm high. 
Leaves linear, 5 to 15 cm long, mostly basal. Spikes 2 to 5, silky-hairy, 3 
to 9 em long, at the apex of the stem, somewhat flexuous. Spikelets about 
3 mm long, silky-hairy with white hairs, the awns 6 mm long or longer. 
In dry grass lands, apparently rare in our area, June; widely distributed 
in the Philippines. India, Malaya, and northern Australia. 
9. SACCHARUM Linnaeus 
Tall, coarse, erect, perennial, usually unbranched grasses, the stems 
solid. Inflorescence a large terminal panicle, the branches slender, jointed. 
Spikelets small, awnless, 1-flowered, in pairs, 1 sessile with a perfect flower, 
1 pedicelled with a female flower. Glumes 4, all thin, the third empty, the 
fourth shorter than the others, rarely wanting. (Latin “sugar.”) 
Species about 12, chiefly in the tropics of the Old World, 3 in the Philip- ° 
pines. 
Stem silky below the panicle; leaves harsh, 1.5 cm wide or less. 
1. S. spontaneum 
-Stem glabrous below the panicle; leaves broad, up to 5 cm in width; 
eelivnted inl Wile ee edit eigen hotest. 2. S. officinarum 
1. S. spontaneum L. subsp. indicum Hack. Talahib (Tag.). 
A coarse, erect perennial, usually more or less tufted or gregarious grass 
1 to 3.5 m high, from stout underground rootstocks. Leaves harsh, linear, 
slenderly acuminate, 0.5 to 1 m long, 6 to 15 mm wide. Panicle white, 
