ROTTBOELLIA, | ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 293 
tem brevem exeurrente munita, altero margine exalata in mucronem 
rectum 1 mm. longum producta, dorso plano 5-nervis, non foveolata ; 
II“ I?» :equans, lanceolata, acuta, carina a basi ad apicem usque ala 
plus minus lata hyalina obtusa v. in dentem brevem excurrente 
ornata. Reliqua nulla. 
Asia (versimiliter India or.), Hügel in h. Vindob., n. 3147. 
Subgenus 5. CŒLORHACHIS. 
Cæœlorhachis Brogn. in Voy. Coqu., Bot., p.64 emend.; Stegosia Lour. 
FI. cochin., p.51; Rottbeelliastrum (Subg.)Hack.in Mart. et Eichl. Fl. 
brasil. 2, pars 3, p. 310. — Racemi subcompositi (raro spicæ spuriæ) 
in apice culmi ramorumve solitarii, eylindriei v. raro subcompressi ; 
rhacheos fragilis articuli dorso convexi, recte v. suboblique disjun- 
gentes, disjuncti apice foramen v. cavum rotundum exhibentes ; pedi- 
celli liberi v. raro articulis adnati. Spiculæ omnes prorsus muticæ, 
conformes v. pedicellatæ tabescentes, 1—(raro) 2-florz; gluma 1"* 
coriacea v. cartilaginea, convexa, marginibus angustissime leviterque 
inflexa, callo brevi rectangulo v. annuliformi, rhacheos cavum ocelu- 
dens v. superans; II“ chartacea v. subcoriacea, carinata; IM hyalina 
v. membranacea, vacua v. paleata v. etiam florem g includens; IV* 
hyalina, 1—(raro) 3—nervis, cum palea »quilonga enervi v. binervi, 
rarissime epaleata. Stigmata linearia v. lineari-oblonga brevia, per 
anthesin intra glumas divergentes erecta, non exserta. Embryo 
caryopseos dimidium sæpe superans, interdum totam sequans. 
Gramina habitu satis vario, in utroque orbe obvia. 
A. Bee spicularum primarium cum articulis connati et ita cum iis inter- 
ormantes crassissima , extus valde convexa, intus profunde exca- 
vata mat in R. exaltata non adnati sed arcte alicik. (n. 10—14). 
a. Spicule omnibus partibus glabræ. — Annuæ. Culmi e nodis 2—3 i 
supraterraneis radices primo simplices glabras dein solum ingressæ 
ramulosas pubescentesque edentes. a basi ramosi, ad apicem usque 
foliad, glaberrimi. Vaginæ teretiusculse, laxiusculie, i 
Ligula brevis, rotundato-truncata , rufescendo-membranacea , ciliata. 
r 
glabri. Spiculs sessilis glumze glabræ, IId* in cavitate rhacheos immersa 
(n. 10— 
10. R. exaltata (Linn. fil. Supplem., p. 114);laminis basi ahgus- 
