346 



(4) Paspalum distichum Linn. Amoen. Acad. 5 (ITT)*)) 391; Hook. f. Fl. 

 Brit. Ind. 7 (1SU7) 12; Kendle in Forbes & Henisl. Jomn. Linn. Soc. Bot. 36 

 (1904) 319; I'steri Beitv. Kenn. Philip. Veg. (1905) 133; F.-Vill. Nov. App. 

 (1883) 310. Paspuhiiii longiflonim Retz.; Presl Rel. Haenk. 1 (1830) 208. 

 Paspaliim digitaiia Wnv. in Lan. Encycl. 4: 31G. 



Luzon, Province of l'ami)anf>a, 8an Esteban (4253 Merrill) September, 1905. 

 Samar, Oras (5229 Merrill) October, 1900. 



Tropical and warm eountries j^enerally. 



EXCLUDED SrECIES. 



Paspalum elegans Fliigge; F.-Vill. Nov. App. (1883) 310, an American 

 species, Villar's identification undoubtedly being erroneous. 



Paspalum chuysotrichum Presl Rel. Haenk. 1 (1830) 211; Kuntli Knum. 1 

 (1833) 64; Miq. Fl. Ind. Bat. 3 (1859)^31; F.-Vill. Nov. App. (1883) 310. 



"Habitat in Luzonia" Presl. Probably erroneously localized and a native of 

 tropical America, not the Philippines. From the description it appears to be a 

 synonym of Paspalum anreiim H. B. K., an American species. 



Paspalum boryanum -Presl Rel. Haenk. 1 (1830) 209; Kuntli Knum. 1 (1833) 

 52; Miq. Fl. Ind. Bat. 3 (1859) 432; F.-Vill. Nov. App. (1883) 310. 



"Hab. ad Sorsogon" Presl. Although credited to Luzon by Presl, tliis may be 

 an American species. It is possibly referable to Digitaria. 



(20) DIGITARIA Scop. 



Spikes ii.sually digitately arranged at the summit of tlie culms. Spil-ce- 

 lets narrow, acute or acuminate, in twos or threes on one side of a fUit, 

 winged, or triangular rhachis ; glumes three or foui', the three outer ones 

 memhranous, the first often minute or wanting. 



Species about 25, widely distributed in tropical and temperate regions, by 

 s(nne authors referred to Paspalum, by others to Panicuin ; five species in the 

 Philippines. 



1. Spikelets about 3 mm. long. 



2. Spikes many, 10 to 20, scattered or whorled along a 



somewhat elongated axis (2) £». consniiguinca 



2. Spikes few, 2 to 6, digitate or approximate at the apex of 



the culm U) D. saiiyuiiialis 



1. Spikelets about 1.5 mm. long. 



2. Spikes digitate or approximate at the ends of the culms. 



3. Spikes usually two or three, less than 5 cm. long ; 

 culms short, erect from a prostrate creeping 



base (3) D. h>ii!ii/l<ir(i 



3. Spikes 3 to 10, frequently 10 cm. long ; culms 

 elongated, erect, the base scarcely prostrate or 



creeping (-1) ^- rioUusrciis 



2. Spikes alternate, scattered along the somewhat elongated 



common rhachis (5) D. prdirellaris 



(1) Digitaria sanguinalis (Linn.) Scop. Fl. Cam. ed. 2. 1 (1772) 52: 

 ,Miq. Fl. Ind. I'.at. 3 (1S59) 437; Rendle in Fnrbes & Ifemsl. .I(i\ini. i.inii. Sue. 

 Bot. 36 (1904) 325. D. iiiaetjiialis Sjireii^. Svsl. 1 MS25i 271. />. hiforiuis 

 Willd. iMiniii. (1809| 92. U. radirosa Mi<|. I"l. ind. I'.at. 3 (1S5!)) 4:!7. I'aiiicuiii 

 saiiguiitair Linn. Sp. I'l. (1753) 57. /'. ili<h(cl i/lii in Kuntli; Hack, in ConI. Lab. 

 Publ. 35 (19()5| SO. /'. r<iilic(jsiiiii I'lesl Kel. Haenk. 1 (IS.tO) 297; Kuiilh 

 Kinnif. 1 (1833) SI; l'".-\ill. .Vov. .\pp. |I8S3) ."{ll. e\ dexr. I'asjiahnn saniiiii- 

 nale Lam. TabL Encycl. 1 (1791) UC; Ibink. f. Kl. I'.rit. Ind. 7 (1S!I7| 13. 

 Paspalum iiiaequale Link in Kuntli Liiuni. 1 (1S33) 4S e\ descr. I'aiiicinn 



