363 



DOUBTFUL AM) EXCLUDED SPECIES. 



Panicum mkhtknkii Roth.; F.-Vill. Nov. App. (1883) 312. First credited 

 to the Philippines by Llanos, Mem. Ac. Cienc. Mad. (1868), but certainly 

 erroneously identified. An American species. 



PANICUM GAUDICHAUDII Kunth; F.-Vill. 1. c. 311. A species of the Marianne 

 Islands. F.-Villar's record for this species as a Philippine plant has never been 

 verified, probably an erroneous identification on his ]><\rt^Di</itari<i stricta 

 ( raudich. 



Panicum leucophaeum II. B. K.; F.-Vill. 1. c. .'ill. 



l'resl (Rel. llaenk.'l (1830) 299) slates regarding this species "Hah. in 

 Mexico, in Luzon ia" from which Fl-Villar compiled his record for the Philippines. 

 F.-Villar states, however, that he saw living specimens in Luzon and Panay, 

 which might have been Panicum villosutn Lam. The Bpecies is Mexican, and 

 some Australian forms have been referred to it. It is not to he expected in 



the Philippines. 



Panicum hxlopus Trin.; F.-Vill. 1. c. 311.=P. setigerum Ret/... a species of 

 British India, hardly to be expected in the Philippines. F.-Villar reduces to 

 P. helopus, Setaria pUifera Llanos Frag. PI. Filip. (1851) 34, and while this 

 reduction is apparently erroneous, I have been unable to determine Llanos's species 

 satisfactorily from his very imperfect description. 



Panicum elatius Kunth Rev. Oram. 1 (1829) 38; F.-Vill. Nov. App. (1883) 

 312.^ Panicum altissimum Mey., a species of tropical America. Certainly an 

 erroneous identification on the part of F.-Villar. 



(30) ICHNANTHUS Beauv. 



Similar to Panicum, but the flowering glume pedicellate and with two 

 basal appendages or scars. 



Species about 20, mostly tropical America, two in tropical Asia; one in the 

 Philippines. 



(1) I. pallens (Sw.) Munro in Benth LI. Hongk. (1861) 414: Hook. f. Fl. 

 Brit, lnd. 7 (1807) 60; Rendle in Forbes & Hemsl. Journ. Linn. Soc. I'.ot. 36 

 (1804) 334: Hack, in Govt. Lab. Publ. 35 (1905) 80. Panicum pollen* Sw. 

 Prodr. (1788) 23; Kunth Lmim. 1 (1833) 89. J', nitena Merr. Govt. Lab. Publ. 

 17 (1004) 8. 



Luzon, Province of Bataan, Mount Mariveles (3221, 3756 Merrill) October, 

 1003, .January, 1904. 



Tropica of both hemispheres. 



(31) OPLISMENUS lieauv. 



Spikelets 1-flowered in small groups or clusters along the branches of 

 the panicle, secund : first and second glumes always awned, the third 

 frequently awned. 



Species about 6, tropical and subtropical regions of both hemispheres; three 

 in the Philippines. 



1. Spikelets about 2 mm. Ions, greenish, closely imbricate, green ; 



awns capillary (1)0. burmannii 



1. Spikelets 3 to 4 mm. long, loosely imbricate or scattered, often 

 purplish ; awns stout. 



2. More or less pubescent; spikes elongated (2)0. compositua 



2. Glabrous or nearly so ; spikes short or reduced to a single 



fascicle of flowers (3) 0. undulatifolius 



