SECO DS Mer iun pu 7 e BR, P ET Rt RE ME M Er 
ANDROPOGON. ANDROPOGONER (AUCT. EDUARDO HACKEL). 369 , 
sessili '/, brevior, eam crassitudine æquans, appendice brevi obsolete 
dentato coronatus, glaber, scaber; spicula tabescens 3 mm. longa, 
subulato-lanceolata, recta, rufescens: gluma I^ 5-nervis, inter apicis 
dentes mueroniformes setam ipsa breviorem exserens ; II paullo bre- 
vior, 1-nervis, breviter setigera, III* pusilla, reliqua 0. 
Nubia: Matamma-Gallabat (Schweinf. 1031). 
B. Perennes. — Cxspitosi; culmi innovationibus aucti, erecti, multinodes, gla- 
berrimi. Vaginz arctæ, nodis glabrze, internodiis breviores (rarissime ea 
BERR (n. 7—25). 
a. Laminæ planæ v. ubi siccitate leviter complicatæ sunt, si in aqua emollis, 
facile explanandæ, costa media tenui subtus sæpius acute carinata paren- 
chymate incolori plerumque destituta, supra fasciculo cellularum bulli- 
formium instructa (except. specc. 15, 16, 18), nervis lateralibus ssepius 
non prominulis (n. 7—23) 
a. Spieule sessilis anguste linearis gluma Jma marginibus ita late implicata ut margines ipsi 
in media pagina interiore (prasertim superne) sese tangant, a basi sensim longeque 
acutata, bimucronulata, coriacea, prater nervos carinales superne serrulato-scabros 
vis v. raro subdistincte 2-nervis, intus epidermide rubente facile solubili induta. — 
Culmi jam infra medium ramosi, ramis solitariis 3^i* simplicibus v. ramulo auctis, 
rarissime multiramulosis, glaberrimis, er subfastigiatis, Vagin® carinato- 
eompress®. Ligula brevissima, truncata, glabra. Lamins e basi »quilata lineares, 
firms, subtus leaves, supra marginibusque RER ssime scaberrims. Spaths 
proprim basi anguste, superne sæpius dilatatze, acntæ v. pontes: v. laminz rudi- 
mento suibtosain, me neulo racemi apice glabro in racemo terminali demum bre- 
viore, in racemis axillaribus us plus minus longiores. Racemi rhachis stricta, 
arti ee sessilem a apice quam ipsa spieula erassioribus, appen- 
ln age eupulato margine interiore erenulato coronati, Spiculæ sessilis gluma IIda 
, alba, margine hyalino glabra, elevsio-carinate, carina infra apicem sobgibba, 
es 
IV* ad */, v. fere ad basin usque in lacinias 2 acntas fissa; palea O. Stamina 3. Spi- 
culæ tabescentes pedicello articulo paullo breviori, erecto insidentes, sessilibus plerum- 
que duplo v. plus duplo breviores, demum mac 2—8-glamss gluma Ima inter apieis 
mucronulos aristam ipsa breviorem v. raro (A. Riedelii) gatus exserens. Species 
4 sequentes (n. 7— 10) inter se et cum A. eres maxime affini 
7. A. semiberbis (Kunth ! Enum. 1, p, 489) ; rhacheos articulis 
dere dorsoque cum gluma I» spiculæ sessilis glabris lævibusque 
. raro pilis parcis adspersis, pedicellis altero tantum latere aceres- 
da iai. — Schizachyrium semiberbe Nees ! Agrost. bras. p. 336. 
Culmi 60—100 em. alti, subrobusti, ramis elongatis ; vaginze ore 
ssepius barbatæ ; laminæ 15—30 em. longz, 2—4 mm. late, acutius- 
Suite au Prodromus VI. 9 
