353 



8. Spikelets lanceolate, 

 strongly acumi- 

 nate ; panicles 

 eft'use ; branches 

 elongated, stiff, 



flliform (19) P- tri/pheron 



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 (23) F. repcns 



7. Spikelets lanceolate, acum- 

 inate ; stem thick ; fre- 

 quently floating ; leaves 



flat (24) P. proliferurn 



6. First glume 3 to 5-nerved (26) P. sarmentosuni 



2. Panicle branches produced beyond the terminal spikelet 

 into a rigid scabrous awn-like bristle equaling or 

 exceeding the spikelet. (§ Ptycophyllum.) 

 3. Panicle decompound ; leaves broad, ample, plicate.. (29) P. pahnaefoliiDu 

 1. Spikelets strongly laterally compressed. 



2. Spikelets minute, panicled ; flowering glume semilunar. 



(§ GiBBOSAE.) 



3. Panicles densely flowered ; spikelets crowded (30) P. pilipcs 



3. Panicles diffuse ; spikelets scattered, solitary. 



4. Panicles 25 to 40 cm. long, very diffuse (31) P. patens 



4. Panicles 10 to 15 cm. long, rather narrow.. (32) P. carhiatum 

 4. Panicles less than 10 cm. long, often 



reduced to very few branches (33) P. warbur<jii 



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 (34) P. uncinatim 



Sect. Paspaloideae. 



(1) Panicum flavidum Retz. Obs. 4 (1770-91) 15; Kunth Rev. (4raiii. 1 

 (1829) 211. t. 11; Enum. 1 (1833) GO: Hook. f. Fl. Brit. Iml. 7 (1897) 29; 

 F.-Vill. Nov. App. (1883) 311; Vidal Phau. Cuming. Philip. (1885) 157; Rev. 

 PI. Vase. Filip. (1886) 286; Merr. in Philip. Journ. .Sci. 1 (1906) Suppl. 27; 

 Mez in Perk. Frag. Fl. Philip. (1904) 142; Panimm floridum Usteri Beitr. Kenn. 

 Philip. Veg. (1905) 133. P. hrizoides Jacq.; Miq. Fl. Ind. Bat. 3 (1859) 445. 



Philippines (560 Cuming). Luzon, Manila (68 McGregor) October, 1904; 

 (21, 265 Merrill) April, July, 1902: Province of Bataan, Laniao (6145 Leiberg) 

 July, 1904; Dinalupijan (1526 Merrill) January, 1903: Province of Pampanga, 

 Bacolor (35 Parker) May, 1904: Province of Tayabas, Atimonan (126 Gregory) 

 August, 1904. Cebu {BarroiD) 1904. Palawan (4176, 4185 Curran) May, 1906. 

 Basilan (47 DeVorc d- Hoover) April, 1903. Bohol (1249 McGregor) June, 

 1906. 



Tropical Asia, Africa, and IMalaya. 



(2) Panicum punctatum Burm. Fl. Ind. (1768) 26; Hook. f. Fl. Brit. Ind. 

 7 (1897) 29. Panienm fliiitans Retz. (Jbs. 3 (1779-91) 8 (not 5: 18, teste 

 Hook, f.) ; Miq. Fl. Ind. Bat. 3 (1859) 455; Rolfe in Journ. Bot. 23 (1885) 216; 

 Vidal Phan. (.'uming. Philip. (1885) 157; Rev. PI. Vase. Filip. (1886) 287; 

 Ceron Cat. PI. Herb. (1892) 180. Paspalum pluriraceniosum Steud. 8yn. 1 

 (1855) 27; Miq. Fl. Ind. Bat. 3 (1859) 431; F.-Vill. Nov. App. (1883) 310. 



