232 CHINA. [Gramineoe. 



;equilongis pubescentibus 3-5-nervibus, flosculo neutro fusco subtil issime punctato, culmo 

 erecto vaginisque glabris, foliis angustis supra velutino-scabris. — P. filiforme, Chinense. 

 Kunth.En. \.p. 46. 



Hab. Ad Macao urbem ; G. H. Vachell, " X." (ex parte.) 



Differt a P.filiformi rhachi latiori recta, spiculis paullo majoribus imbricatis aut densius saltern confertis ; 

 a P. nematode culmo erecto gracili, vaginis foliisque protractis. 



[Kunth's Chinese locality is taken from Roxburgh ; but Roxburgh's Panicum filiforme is obviously a true 

 Panicum, allied to his P. lineare (P. pseudodurva, N. ab E.) and P. commutatum, N. ab E., but differing 

 by the upper glume being only half the length of the neuter floret, and both three-nerved and slightly villous 

 on the margin.] 



2. HELOPUS. Trin. 



Eriochloce genus Humb. et Kunth, secundum novissimum Kunthii librum idem ac Helopvs, Trin. At 

 vero characteres in Nov. PL Gen. et Sp. exhibiti, veram generis naturam non exprimunt. Itaque Trinianum 

 nomen retinendum, quippo quo primum genus vero innotuerit. 



1. H. annulatus; racemo decomposito laxo, rhachi triquetra glabra gracili, pedunculis 

 bifloris, spiculis ovato-lanceolatis sericeo-pilosis, culmo ramoso glabro. — N. ab E. Agrost. 

 Bras. p. 16. — Eriochloaannulata. Kunth.En. 1. p. 73. — Paspalus annulatus. Flugge. — Trin. 

 1c. Gr. 12. t. 133.— Milium ramosum. Roxb. Fl. Ind. 1. p. 15; (erf. Wall.) I. p. 317. 



Hab. Circa urbem Macao ; G. H. Vachell, n. 57. (ex parte.) 



Differt a reliquis sui generis gracilitate racemi, pedunculis longioribus bifloris, dcfectu vel minimi vestigii 

 srlumse inferioris. 



3. PANICUM. Linn. 



a. DlGITABIA. 



1. P. commutatum; racemis 3-5 subdigitatis erectis, rhachi scabra, spiculis subimbricatis 

 geminatis, gluma inferiori minutissima subrotunda truncatave enervi, superiori lanceolata 

 flosculo paullo breviori et duplo fere angustiori trinervi, quadrifariam dense Janata, valvula 

 neutra 5-nervi interstitiis nervorum lateralium dense villosis, culmo basi repente foliisque 

 glabris, vaginis ore barbatis. — N. ab E. in Linnaa, 7. p. 274. — P. ciliare. Roxb. Fl. Ind. 1. 

 p. 290; (erf. Wall.) I. p. 293.— P. filiforme. Thunb.— Digitaria commutata. Schult. Mant. 

 p. 262. 



Hab. Circa Macao urbem ; Millett. Vachell, n. 34. 



Species singulari integumento spicularum et foliis vaginisque extra oras glabris, ut et proportione glumae 

 siipcrioris, turn a P. ciliari, turn ctiara a P. marginato, Link, bene distincta. 



b. Paspalidea. 



2. P. colonum; spica composita, partialibas pluribus (5-9-nis) alternis discretis approxi- 

 matis erectis, rhachi communi glabris, partialibus scabris, spiculis quadrifariis imbricatis 

 ovatis turgidulis, glumis mucronulatis hispido-scabris, inferiori triplo breviori, flosculo 

 neutro bivalvi valvula inferiori mucronata, hermaphrodito laevi mucronato, culmo basi ra- 

 moso nodis foliisque glabris, his margine scabris. — a. Culmo plerumque huroiliori % folns 



