' Graminece.] 



CHINA. 



237 



all syn.) and even to G. hordeiformis, N. ab E. (or G. caudata, Kunth,) than to any species of Penicillaria: 

 nd this appearance is supported by the structure of the spikelets, which is truly that of Gymnothrix. In 

 Penicillaria, however, the inflorescence is a raceme with the pedicels and involucres persistent ; in Gymno- 

 thrix it is usually a spike, the sessile involucres being deciduous : in the present plant, it is a raceme, but 

 the short pedicels, as well as the involucres, are deciduous, thus agreeing in every point with the genus to 

 which we have removed it. The leaves are glabrous, but, at the same time, scabrous on their margin. The 

 spike, or rather raceme, is usually about three or four inches long ; we have rarely seen it so long as des- 

 cribed above : at first it is acute at both ends, but afterwards the pedicels often spread out horizontally, pre- 

 senting a lax appearance. Pedicels frequently a line and a half long, articulated with the rachis. The 

 bristles of the involucre are at first pale, but afterwards of a beautiful purple from almost their base to the 

 apex. From G. alopecurus, the only other species with distinct pedicels, it is readily distinguished by 

 their being almost as long as the spikelets. Trinius' figure is excellent, if taken from a young specimen ; 

 he, and Nees von Esenbeck, and we also, have found only one spikelet in each involucre : Kunth says that 

 there are one or two.] 



Trib. II. Tristegine^e. Link. 

 4. ARUNDINELLA. Raddi. 

 Subgen. L. Acratherum. Arista apici valvulae integro inserta. — Acratherum, Link. 



1. [A. glabra; culmo foliisque linearibus valde acuminatis glabris, vaginis ore barbatis, 

 paniculte coarctatse elongatae, ramis fasciculatis a basi florigeris, glumis (fuscis) minutissime 

 pubescentibus subelevato-nervosis, inferiori £ breviori, flosculi fertilis valvula inferiori (sen 

 setigera) acuminata. 



Hab. Prope Macao ; G. H. Vachdl, " T."] 



Subgen. 2. Miliosaccharum. Valvula inferior flosculi fertiles apice bifida, laciniis setiformibus, 

 inter lacinias aristata. Spiculce gemmae aut solitariae, homogamae, hemiologamae, conformes, pedicel- 

 latae. Glumce duae, herbaceo-membranaceae, iusequinerves, caudato-acuminatae, flosculis plerumque 

 longiores; superior major. Flosculi membranaceo-chartacei, inferior major neuter, cum rudimentis 

 genitalium, bivalvis, valvula inferiori plurinervi integra, superiori plana margine inflexa; superior bi- 

 valvis, valvula superiori binervi apice bidentata inter dentes emittente setam basi tortam. Lodicula 

 magnae, oblongae, emarginatae, angulis obtusis, plicatae, crassiusculae. Stamina tria, antheris violaceis. 

 Styli basi concreti, filiformes. Stigmata penicillata, violacea. Caryopsis libera, compressa, mucro- 

 nata, valvulis durescentibus inclusa. Racemus compositus, nudus, glaber, imberbis. Racemuli fili- 

 formes. Spiculcp lanceolatae, distantes, aut panicula capillaris. — Gramina erecta. Vaginae inter- 

 nodiis b revioves una cum Joliis lincavihus planis attenuatis hirsute* Nodi glabvi, Spicuhe 2-^ liyieas 

 longcE subulato-acuminat<n, sordide viridcs. Flosculus fertilis callo iiisertus, secedens. 



2. A. (M.) nervosa; racemo composito, spiculis geminis, gltima superiori subduplo lon- 

 giori, flosculo fertili apicem versus muricato-aspero, foliis vaginisque hispiclis, his basi laevi- 

 bus. N. ab E. in Herb. Wight. Wight, Cat. n. 1669.— Holcus nervosus. Roxb. Fl. Ind. 1. 

 p. 318. (ed. Wall.) 1. p. 320.— (3. laxa teneriorque, panicula' ramis distantibus, spiculis 

 omnino glabris. N. ab E. in Wight, Cat. n. 1669. b. 



Hab. ft. Circa Macao urbem ; G. H. Vachell, " V." 



Culmus pedalis et altior, erectus, e radicc fibrosa torta, crassitie fili cmporetici, teres, laevis, cum nodis 

 glaber, inf'erne purpurascens, 4-nodus, ramosus. Vagina arctae, internodiis breviores, striatoe, tubcrculis 



