456 MONOCOTYLEDONEJE. ANDROPOGON. 
v. sulco medio exarata. (Spec. 73— 75, illis subdivisionis præcedentis, 
imprimis A. schirensi magis affines quam seriei B, quibus arista glumæ 
IIdae accedunt. 
73. A. apricus (Trin. ! in Mém. Ac. Petersb. ser. 6, vol. 4 (1836), 
. 83); spicula pedicellata neutra biglumi sessilem aequante, ejus 
gluma I“: aristam spicula duplo longiorem exserente. 
Innovationes extravaginales breves. Culmi erecti, graciles, 0,5—2 
em. alti, teretes, lzvissimi, e nodis superioribus ramos floriferos binos 
v. ternos sæpius ramulosos (ramis secundariis solitariis—ternis) pro- 
ereantes, ramis gracilibus, superioribus fastigiatis, arcuato-patenti- 
bus. Vaginæ teretiuscule, arcte, leves. Ligula 1—2,5 mm. longa, 
glabra, truncata. Lamins e basi »quilata lineares, 10—30 em. longs, 
1—2 mm. late, setaceo-acuminat&, plan: v. siccando convolutz, 
flaecidze, demum rubentes, glabr&, utrinque v. supra scabræ, costa 
media inferne crassiuscula, supra latiuscule albolineata, nervis latera- 
libus vix prominulis. Racemi sibi appressi, 1,5—2,5 cm. longi, alter 
pedicello 4 mm. longo fultus, sæpius a spatha propria (vagina summa) 
viridula lanceolata in laminam brevissimam aristiformem excurrente 
plus minus remoti, rarius illä semiinvoluti : articuli pedicellique spi- 
cula sessili '/, breviores, late cuneati, inzequaliter bidentati, cupula 
obliquissima coronati, distiche pennato-ciliati, ciliis albis rigidulis 
paullo infra apicem desinentibus, in cujusvis racemi articulo imo defi- 
cientibus. Spicule sessiles a latere visze oblongze, 5 mm. longe, palli- 
de : gluma I" linearis, truncata, membranacea, marginibus late 
implicata, inter carinas incrassatas scabras canaliculato-depressa, 
glabra, 2—4-nervis, callo 1 mm. longo acuto sericeo-barbato ; II? 
carinata, compressa, obovato-oblonga, obtusa, ex apice integro aris- 
tam rectam gluma 2—3-plo longiorem emittens, 1-nervis, carina sca- 
bra, margine ciliata ; HI paullo brevior, lineari-oblonga, binervis, 
ciliolata ; IV: quam II^ '/, brevior, obovata, membranacea, dorso 
gibba, 3-nervis, ciliata, infra apicem minute bidentulum aristam vali- 
dam 25—40 mm. longam exserens, columná supra medium geniculatä 
sepius hispidulä quam subula Bree Palea rien IV?» subæ- 
quans, lineari-oblonga, enervis. Spicule quantes, 
lanceolato-oblong®&, pallentes, ad glumæ II“ basin squamula minuta 
oblonga fultæ : gluma I" oblonga, acutiuscula, herbaceo-membrana- 
cea, carinis plus minus longe ciliata, aristam ipsa duplo longiorem 
emittens ; II“ P= subæquans, membranacea, 3-nervis glabra, brevius 
aristata v. submutica ; II, IV* minute v. 0, stamina 0. Spicula sessi- 
