542 MONOCOTYLEDONEX. ANDROPOGON. 
3. Sorghum anomalum Desv. Opuscul. p. 72. Culmi elati, 
glabri. Folia glabra, margine aspera; vagin: ore ciliatze ; panicula 
contracta ramis subsimplieibus appresse florigeris ; spiculze basi pili- 
fere pedicellatze, pedicellis basi radiatim pilosis. Glumæ glabr®, 
striatze, IV* in spicula fertili dorso aristata. — Hab. in America cali- 
diore ? — Inextricabile, vix hujus subgeneris. 
Subgenus 9. VETIVERIA. 
Benth. in Journ. Linn. Soc. 19, p. 72; Benth. et Hook. gen. 3, 
p. 1134 (lapsu Petiveria); Vetiveria Thou. ex Virey in Journ. Pharm. 
ser. 1, vol. 13, p. 499; Griseb. Fl. Westind. Isl. p. 559; Mandelorna 
Steud. Synops. 1, p. 359. 
Racemi subcompositi in apice culmi paniculati (panicula vera), omnes 
pedunculati, ad panicule nodos vertieillos multiradiatos formantes, 
3—multi-artieulati; rhacheos fragilis articuli pedicellique lineares, 
filiformes, dorso convexo sine sulco, marginibus parce pilosuli v 
glabrescentes, recte v. oblique disjungentes, disjuneti apice non 
appendiculati. Spiculz sessiles omnium parium 92, a latere v. rarius 
à dorso subcompress&, muticz v. aristatze : gluma I™ coriacea v. char- 
tacea, marginibus subinflexa v. involuta; Il“ mutica v. aristata, III* 
hyalina; IV* integra v. bidentula v. breviter bifida, mucronata v. e 
sinu aristata. Palea 0 v. parva. Lodieule glabræ. Stamina 3 (raro 2?). 
Ovarium glabrum; stigmata linearia, stylis 2—4-plo longiora. Caryop- 
sis ignota. Spiculze pedicellate g, muticze v. raro aristatz. 
Gramina elata, angustifolia, zonam tropieam orbis antiqui incolen- 
tia, una species etiam in America tropica, fortasse inquilina. — Culmi 
erecti, simplices, teretiusculi, glaberrimi. Vaginarum nodi glabri. 
e basi subzquilata in vaginam decurrente lineares, elongatze, 
acute, vernatione conduplicata, adult planze v. aperte canaliculatze, 
erectz, rigidze, subtus clare virides, praeter marginem serrulato-sca- 
berrimum leves. Panicula terminalis, erecta, elongata, oblonga v. 
lineari-oblonga, basi vagina summa fulta v. parum ab illa remota, 
rhachi subangulata glaberrima, ramis proprie verticillatis crebris 
(6—20 in vertieillo), inzequalibus ; racemi cum peduneulo gracili arti- 
culati. Spiculie anguste, acute. — Subgenus a Chrysopogone haud 
bene distinctum, cum illo speciebus intermediis arcte conjunctum. 
117. A. squarrosus (Linn. fil. Supplem. p. 433); paniculz ramis 
