358 
8. Spikelets lanceolate, 
strongly acumi- 
nate ; panicles 
effuse ; branches 
elongated, stiff, 
filiform 
5. Perennial. 
6. First glume very small, subor- 
bicular, nerveless. 
7. Spikelets ovate to ovate- 
lanceolate, acute : stem 
creeping, stoloniferous ; 
leaves usually con- 
volute, glaucous 
7. Spikelets lanceolate, acum- 
inate ; stem thick : fre- 
quently floating ; leaves 
flat 
6. First glume 3 to 5-nerved 
2. Panicle branches produced beyond the terminal spikelet 
into a rigid scabrous awn-like bristle equaling or 
exceeding the spikelet. (§ Ptycophyllxjm.) 
3. Panicle decompound ; leaves broad, ample, plicate.. 
1. Spikelets strongly laterally compressed. 
2. Spikelets minute, panicled ; flowering glume semilunar. 
( § Gibbosae.) 
3. Panicles densely flowered ; spikelets crowded 
3. Panicles diffuse ; spikelets scattered, solitary. 
4. Panicles 25 to 40 cm. long, very diffuse 
4. Panicles 10 to 15 cm. long, rather narrow.. 
4. Panicles less than 10 cm. long, often 
reduced to very few branches 
2. Spikelets about 4 mm. long, distant, subsessile on a 
slender, simple or sparingly divided rhachis. 
(§ PSEUDECHINOLAENA.) 
3. Empty glumes of the upper spikelets with hooked 
glands 
(19) P. Irjjpheron 
(23) P. rcpciis 
(24) P. proUferuiii 
(26) P. sarmentosuni 
(29) P. palmaefolhim 
(30) P. pilipes 
(31) P. patens 
(32) P. carinatum 
(33) P. xoarburgii 
(34) P. iiiicinatum 
Sect. Paspaxoideae. 
(1) Panicum flavidum Retz. (JVis. 4 (1/711-91) 15; Ktmth Rev. Grain. 1 
(1829) 211. t. 17; Enuni. 1 (1833) (it): Hook. f. FI. Brit. liid. 7 (1897) 29; 
F.-Vill. Nov. App. (1883) 311; Vidal Phan. Cnining. Philip. (1885) 157; Rev. 
PI. Vase. Filip. (1880) 280; Merr. in Philip. .Jouvn. Sei. 1 (1900) Suppl. 27; 
Mez in Perk. Fragr FI. Philip. (1904) 142; Panicum floridum Usteri Beitr. Kenn. 
Philip. Veg. (1905) 133. P. hrizoidcs Jaeq. ; Miq. FI. liid. Bat. 3 (1859) 445. 
Philippines (500 Cuming). Luzon, Manila (08 McGregor) October, 1904; 
(21, 205 Merrill) April, July, 1902: Province of Bataan, Laniao (0145 Leiberg) 
July, 1904; Dinalupijan (1520 Merrill) January, 1903: Province of Painpanga, 
Bacolor (35 Parker) May, 1904: Province of Tayabas, Atimonan (120 Gregory) 
August, 1904. Cebu (Barrow) 1904. Palawan (4170, 4185 Curran) May, 1900. 
Basilan (47 DeVore ct Hoover) April, 1903. Bohol (1249 McGregor) Juno, 
1900. 
Tropical Asia, Africa, and Malaya. 
(2) Panicum punctatum Bunn. FI. hid. (1708) 20; Hook. f. FI. Brit. hid. 
7 (1897) 29. Panicum fhiitaxis Retz. Obs. 3 (1779-91) 8 (not 5: 18, teste 
Hook, f.) ; Miq. FI. hid. Bat. 3 (1859) 455; Rolfe in .Journ. Bot. 23 (1885) 210; 
Vidal Phan. Cuming. Philip. (1885) 157; Rev. PI. Vase. Filip. (1886) 287; 
Ceroii Cat. PI. Herb. (1892) 180. Paspalum phirirucemosum Steud. Syii. 1 
(1855) 27; Miq. FI. Ind. Bat. 3 (1859) 431; F.-Vill. Nov. App. (1883) 310. 
