D 
POLLINIA. ANDROPOGONEÆ (AUCT. EDUARDO HACKEL). 171 
paullo—'/, breviores, facie interiore canaliculati, dorso convexi v. 
obtuse carinati, marginibus acutis sepissime ciliati, tardius recteque 
disjungentes, sejuneti apice rotundato-cicatricati ; pedicelli quam 
articuli szepius breviores, magis compressi, evidentius ciliati, [ceterum 
iis simillimi. Spieule uniflorze v. rarius biflorze, angustæ, lanceolatze 
v. oblongze, callo minuto, obtuso, plerumque barbulato; gluma II^ a 
latere compressa, navicularis, ovata v. ovato-lanceolata, 1-nervis v. 
nervis 2 lateralibus tenuissimis aucta, carina superne scabra, margi- 
nibus superioribus hyalinis ciliolata; IV* hyalina v. membranacea, 
brevis, plerumque bidentata, ex fissura aristam perfectam v. rarius 
ex apice integro imperfectam capillarem emittens, raro mutica. Sta- 
mina 3, raro 1. Caryopsis lanceolata v. obovato-oblonga, teretiuscula. 
Spiculæ pedicellat® sessiles plerumque zequantes, non nisi gluma I^* 
laxius vel (raro non) sulcata diversze. 
Obs. Florum numerus et glumarum relativa positio hoc in subgenere 
accurate observanda. Mirum est, quod palea glum: III? interdum 
adsit ipsa gluma deficiente, minus accurate observanti locum glumæ 
III* tenens. Quam vero paleam esse non glumam facile cognosces cum 
ejus margines extrorsum plicatos (non introrsum ut in gluma III*) in- 
veneris. 
A. Spieula sessilis biflora, flore inferiore cf inter glumam I2" paleamque glume 
IIle deficientis incluso, superiore 8. Palea floris 3 glumam IVam 
&quans v. superans. — Vaginæ nodis glabrs. Ligula brevis, truncata, 
dorso pilosula. Lamine margine scaberrimz, costa media 1-nervi. Ra- 
cemi laterales sessiles, densiflori, erecto-patuli ; articuli dorso glaberrimi, 
marginibus ciliati. Gluma Ima profunde sulcata, prseter nervos carinales 
2 intracarinalibus infra apicem evanidis ibique cum carinalibus anasto- 
mosantibus percursa ; IIda ovata, 3-nervis; palea floris 0’ quam gluma 
Iva rp brevior, membranacea v. subchartacea, oblonga, obtusiuscula, 
2-nervis v. subenervis, marginibus hyalinis implicatis superne ciliata. 
Lodienle parvule. Flos 8 semper triander. — Species n. 17—19, Ischze- 
mis proxim&; cfr. etiam Ischæmum petiolare Hack., habitu huc perti- 
nens. 
17. P. rufispica ; lamina e basi parum angustata lanceolato-li- 
neari; articulis elavatis in '/, inferiore marginis breviter parceque - 
ciliatis; spieulis 6,5—7 mm. longis, arista spieulä sesquilongiore. — 
a rufispica Steud. in Zoll. Syst. Verz. p. 59; Synops 1, p. 
longe nudi, ele- 
Mod. Culmi subrobusti, circ. 60 em. alti, 
: vato-striati, internodiis superioribus appresse pubescentibus. Vaginæ 
