CHINA. 
235 
9. P. viride. Linn. — Smith in Engl. Bot. t. 875. Trin. Ic. Gram. t. 203. — Pennisetum 
viride. Brown. Prod. \.p. 195.— Setaria viridis. P. de Beauv. 
Hab. Ad Macao et in insulis vicinis ; G. H. Vachell, n. 37. a. 
In forma Chinensi, folia pilosa, vagina autem glabrae, flosculus hand Iseviusculus sed granulatim unda- 
timque exasperatus. 
[Of this the specific character is unfortunately w'anting in Nees von Esenbeck’s manuscript, and we have not 
seen Mr. Vachell’s specimen : if, however, a species which we have received from Millett, also from Canton, 
be the same, it constitutes a form intermediate between the English P. viride and small states of P. Itali- 
cum ; the raceme is slightly lobed, and all the ramuli as well as the involucral bristles are very patent. If 
we be correct in referring these specimens, P. viride can only be distinguished from P. Italicum thus : — 
Racemo arcto simpliciter vel sublobato-spiciformi breviusculo, racemis partialibus subsessilibus paucifloris, 
involucellis rectiusculis, foliis pilosis vel glabris. — All the remainder of the character of P. Italicum applies 
to P. viride; in both, the fertile floret is more or less conspicuously but minutely and transversely rugulose.] 
d. Echinochloa. 
10. P. hispidulum; [spica composita erecta, partialibus subverticillatis subadpressis basi 
et ad insertiones spicularum barbatis omnibus simplicibus, rachi 3-4-angulata striata, spi- 
culis quadrifariis ovatis turgidis hispidis pallidis, gluma inferiori orbiculari-ovata mucronata 
trinervi spicula triple breviori basi amplectente cucullata, superiori ovata mucronato-acu- 
minata 5-nervi, flosculi neutrius valvula inferiori longe setigera, caryopsi Isevi ovata gibba 
subrostellata, culmo suberecto vaginis foliisque glabris, his supra margineque scabris, ligula 
nulla. Lam. Enc. Meth. 4. p. 744. Betz, Obs. 5. p. 18. N. ah E. Agrost. Bras. p. 256. 
— Digitaria hispidula. Willd. En. Hort. Ber. l.jo. 91. — Echinochloa hispidula. Schult . — 
Orthopogon Retzii. Spr. Syst. 1. p. 307. 
Hab. Circa Macao et in insulis vicinis ; Millett. Vachell, n. 43. 
We have drawn up the above character from Chinese specimens, among which we have two extreme 
forms with every gradation between them ; one has the partial spikes short, close pressed to the rachis, and 
the bristle of the neuter floret is seldom longer than the spikelet ; the other is much more luxuriant, having 
more numerous and slightly spreading partial spikes, and the bristle, although short in some spikelets, is 
usually 3-8 times longer than the florets ; this last state approaches so closely to P. crus-Pavonis, N. ab E. 
(Agrost. Bras. p. 259.) that we cannot detect any difference, except in the latter having the lower partial 
spikes compound, and perhaps the lower glume not cucullate. Between P. hispidulum and P. ccesium, not- 
withstanding the differences pointed out by Nees von Esenbeck below, M'e find still greater difficulty of draw- 
ing a line : in Prof. Henslow’s specimens of the latter, determined by Nees von Esenbeck himself, the 
rachis is certainly striated, the lower glume is cucullate, and the upper as distinctly 3-nerved as that of P. his- 
pidulum, while the glaucous hue, as well as the colour and size of the spikelets, is too dependant on soil and 
situation to afford any but secondary characters ; we have thus left only the convex back of the rachis and 
the decidedly alternate partial spikes to characterise it, and that these are constant and not the effect of 
fortuitous circumstances we have reason to doubt.] 
11. P. ccesium; spica composita erecta, partialibus alternis subadpressis basi et ad inser- 
tiones spicularum barbatis, raebi inferne semitereti compressa superne triquetra dorso 
convexo, spiculis quadrifariis ellipticis hispidulis coloratis, glumis ovatis trinervibus, inferiori 
spicula triplo breviore acuta, superiori acuminata, flosculi neutrius bivalvis valvula inferiori 
