_ GRAMINEAE 101 
A large genus in all warm and tropical countries, about 13 in the Phil- 
ippines. 
1. Rachilla of spikelets more or less jointed, breaking up from above 
downward. (§ CATACLASTOS.) 
2. Panicles 10 cm long or less. 
3. Stems not viscid below the panicles.......................2..2.00000.- 1. E. tenella 
3. Stems viscid below the panicles. 
4 Panicles: open, ratherslaxiscisii0. 20... 2. E. viscosa 
4. Panicles dense, spike-like.....................22.-..020:00--++ 3. EB. mangalorica 
2::Pamicles 20 to 40 cm: longiiiiit...28n02.4. 2 4, BE. interrupta 
1. Rachilla of spikelets tough, persistent; flowering glumes falling away 
from its base upward. (§ PTEROESSA.) 
2. Panicle-branches elongated, spreading or ascending, the spikelets scat- 
tered, pedicellate. 
3. Annual; spikelets green or purplish. 
4. Spikelets ovate to broadly oblong, 5 to 10 mm long 5. E. unioloides 
4. Spikelets linear to linear-oblong. 
5. Panicle-branches solitary, often spreading; spikelets 1 to 1.8 
NE ESS Sg Ree A ee ES eh hk 6. E. distans 
5. Panicle-branches ascending, the lower ones fascicled; spikelets 
Saeco ee beater “Repragee ean SE EEL aR ARcnorboannacstans 7. E. pilosa 
3. Perennial; spikelets plumbeous.......................2.....-.---- 8. E. elegantula 
2. Panicle-branches short, appressed, distant, the spikelets densely ar- 
Fe tae Mss tee I ek ail pops os fA hei dl a 9. E. spartinoides 
1. E. TENELLA (L.) R. & S. (E. plumosa Link). 
A slender, densely tufted, glabrous annual 20 to 50 cm high. Leaves 
linear, acuminate, 2 to 10 cm long, 2 to 3 mm wide. Panicles oblong, 
rather open, 5 to 10 cm long, the branches solitary, spreading or ascending, 
slender. Spikelets pale, long-pedicelled, about 2 mm long, the flowering 
glumes 4 to 6, less than 1 mm long (FI. Filip. pl. 67, E. plumosa). 
In waste places, common, fl. all the year; throughout the Philippines, 
certainly introduced. Tropical Asia, Africa, and Malaya. 
2. E. viscosa (Retz.) Trin. 
Similar to the preceding but stiffer, stouter, usually taller, reaching 1 
m in height, the culms viscid below the panicle, the spikelets up to 5 mm 
long, often purplish, flowering glumes more numerous, up to 15 in each 
spikelet. 
In similar habitats and with about the same range as the preceding; 
certainly introduced here. 
3. E. MANGALORICA Hochst. 
A densely tufted, rather stiff grass 20 to 40 cm high. , Leaves 3 to 5 
em long, about 3 mm wide, acuminate. Culms viscid below the panicles. 
Panicles contracted, very dense, spiciform, 2 to 4 cm long, less than 1 cm 
in diameter, the branches very short. Spikelets densely arranged, pale 
or purplish, 3 to 4 mm long, the flowering-glumes 6 to 9, about 1 mm 
long. 
In dry grass lands, fl. July—-Sept.; not common in Luzon, certainly in- 
troduced. India. 
4, E. interrupta (Lam.) Doell. 
An erect, loosely tufted grass 0.8 to 1.5 m high. Leaves 12 to 20 cm 
long, 3 to 5 mm wide. Panicles elongated, erect, 20 to 40 cm long, con- 
