362 



Separation (821 Merrill) Fcbniarv. 1903. Mindanao, Lake Lanao, Camp Keitli- 

 ley (153 Clemens) February, 190(5: District of Davao (252 DeVorc tC- Hoover) 

 April, 1903. 



British India to soiitlicni Cliiiia, Malaya, and I'olyiicsia. 



(32) Panicum carinatum I'resl Rel. Haenk. 1 (1S30) 309; Kuntli Imiuih. 1 

 (1833) 112; Miq. Fl. Ind. Bat. 3 (1S59) 452; F.-Vill. Nov. App. (1833) 312. 

 Scribn. Kept. Mo. Bot. Card. 10 (1899) 46. pi. 17. Panicum radicans Mez in 

 Perk.^Frag. Fl. Philip. (1904) 143; Merr. in Tliilip. Journ. Sci. 1 (1906) 

 Suppl. 27, non Retz. 



MiNDORO, Puerto Galera (3328 Merrill) October, 1903. Balabac (451, 51G 

 Manguhat) Marcli. 1900. Culion (477 Merrill) December, 1902. Basilan (70 

 DeVore d Hoover} April, 1903. Palawan (826 Foxworthy) April, 1900. In 

 Nos. 1520 and 3155 Merrill and No. GG4G Elmer, from the Proyince of Bataan. 

 Luzon, the panicle branches and rhachis are supplied with few long white liairs, 

 and Hackel proposes to call this forma hisioeladioti. 



Endemic ? 



The statu.s of this species is very unsatisfactory, and true J'finicum carinatum 

 may prove to be an exact synonym of Panicum pahut^ Liim. Mez'" including in 

 Panicum radicans Iletz., both the form considered above and Pmiicum pllipes 

 Nees et Arn. Schumann and Lauterbach^' certainly misinterpreted Panicum cari- 

 natum, as they reduced to it tlie very different P. jJiUpcs Nees et Arn. {P. her- 

 maphroditum Sieiid.) . Scribner '- gives a figure of Haenke's specimen on which 

 Panicum carinatum Prcsl was based, and considers it to be closely allied to and 

 perhaps identical with Panicum ladicans Retz., which by many authors is con- 

 sidered a synonym of P. pattns Linn. The figure apparently represents a young 

 stage of the Liniican species. Even if the material here referred to Panicum 

 carinatum is correctly identified, it can not be distinguished from Panicum 

 patens Linn., except by some minor characters, such as the smaller size of the 

 panicle, but at the same time it is perhaps as distinct from /'. palcns as is the 

 following species. 



(33) Panicum warburgii Mez in Perk. Frag. Fl. riiilii). (1904) 143. 

 /'. patcn.H Liim. var. pdiriilinn Warh. 1. e. /'. jxilcns Linn. var. irnrhunjii Ifack. 

 in herb. 



Luzon, Province of Nueva Viscaya, Bayombong (303 Merrill) May. 1902. 

 Mindanao, Lake Lanao, Camp Keithley (208 Clemens) February, 1900. 



Endemic. 



Tlie validity of this species is very doubtful, and llackcl is doubtless correct 

 in reducing it to a variety of Panicum patens. It is apparently only a depau- 

 perate condition of that species due to onvironn.cnt. 



Sect. Pseudeciiinolaena. 



(34) Panicum uncinatum Kaddi Agrost. P.ras. (1823) 41; Trin. Cram. 

 Pan. 174; Sp. Gram. Ic. /. 21(>; K>inth Lnum. 1 (1833); Miq. Fl. Ind. Bat. 3 

 (1859) 449; Hook. Fl. Brit. Ind. 7 (1897) 58. 



Mindanao, Lake Lanao, Camp Keithley (260 Clemens) February, 1906. 

 Tropical Asia, Malaya, and America. 



'" I'crk. Frag. I'l. I'liilip. ( 19(14) 14:!. 



" Kl. Dculscli. Scliutzgeb. Siidsee (I9()l| 179. 



'-!,', pi. \ln. Itnl. (lard. 10 (1S99) 40. pi. 11. 



