A.UG. CHEVALIER. ÎSOVITATES FLOR.l^ AKIUCAN.E. 101 



culis siiniles nisi graciliores, 3-5 mm. longi. Spicuhc sessiles : gluma 

 inferior lanceolata, acuminala, cumacumine tenui profunde bifido JOmm. 

 longa, dense longe sericeo-villosa, carinis vix distinctis, nervis obscnris 

 circiterT; superior lanceolata, acuta vel acuminata quam inferior paulo 

 brevior, in durso secus costulam pilosa pilis sursuni longioribus, neras 

 distinctis 3; valva inferior hyalina, 2-nervis, superne moiliter ciliata, lan- 

 ceolata, acuta, 6 mm. longa; valva superior inferiori similis, 5 mm. longa, 

 3-nervis; palea nulla. Spiculœ pedicellata' lanceolatœ, acuta? vel acute 

 acuminatœ, 5-G mm. longœ; glumœ subaîquales, inferior 7-nervis, sericeo- 

 villosa; superior 5-nervis, minus breviusque pilosa; valvœ ut in spicula 

 sessili nisi paulo breviores Stamina 3; antherœ 3 mm. longae. 



Haut-Niger. — Sangorola près Kouroussa, plateaux ferrugineux, 

 12 février 1899, n« 341 [Aug. Chevalier^ 



Haut-Chaiu. — Entre Ndellé et le village de Koundé (Dar-Rounga), 

 mars 1903, n'' 7713 [Aiig, Chevalier], 



Andropogon L. 

 Andropogon Q Diectomis) rhynchophorus Stapf. 



Affinis A. fastiqinto Sw., sed ligula brevi pilis dense stipata, spicuiis 

 majoribus, gluma inferiore utriusque spiculce roslrata, easpiculœ pedi- 

 cellata? exarislata inter carinas 3-5-nervi multo angustiore distinctus. 



Gramem annuum. Gulmi dense fasciculati, erecti, circa 5-6 dm. alti, 

 simplices nisi e nodis summis ramos 1-2 llorentes edentes, graciles, 

 farcti, glabri, 5-nodi, glabri, larves, intermediis internodiis 42-15 cm, 

 longis. Foliorum vaginœ prœter racemîgeras ampliatas arctœ, tenuitcr 

 striât^!, scaberulai, ad nodos minutissime pubescentes et exsiccando 

 annulation constrictœ, caeterum glabrœ vel ad laminœ.junctionem barbato; 

 et pnt'terea superne pilis strictis obsitae; ligulœ ad 1,5 mm. longce, dorso 

 densissirae pilis rîgidisstipatœ; laminœ longe tenuiterattenuatœ, 15-20 cm. 

 longae, 3-4 mm, latœ, planœ, duriuscula*, scabra*, glauca?, glabrœ vcl 

 supra basim pubescentes, nervis laleralibus primariis utrinque 2, rarius 3. 

 Ilacemi solitarii in culmorum et ramorum apiciltus, pedunculati, stricti, 

 multinodi; peduncuUis superne scaberulus velpubescens, apice argenteo- 

 vilbisus, terminalis interdum ad 30 cm- longus, magis minusve exsertus; 

 articuli oblique Iruncati, cum callo brevi subobtuso villoso-barbuto cir- 

 citer 6 mm. longi, apice i mm. lati, dorso convexi, straminei, in utroque 

 margine villis niveîs superne ad 2,5 mm. longis dense ciliati, facie appla- 

 nati et hyaliui; pedicelli articulis simillimi, apice facie interiore emargi- 

 nati, subbidenlati. Spicula sessilis a latere compressa, inter articulura et 

 pedicellum sui nodi cuneata, glabra : gluma inferior pneter roslrum char- 

 tacea et nitida bicarinata, dorso profunde sulcala sulco superne iterum 

 canaliculato, in rostrum viridi-albidum longe et anguste acuminalum ad 

 carinas (quarum una alala) scabrum abiens et cum eo 10-12 mm. longa, 

 nervis intracarinalibus 2 superne in ramos 3 divisis extracarinalibus 

 utrinque 1 ; gluma superior navicularis, 6 mm. longa, chartacea, 5-nervis, 

 apice bidentata, aristata, arista in carinam hrevem spinuloso-ciliatam 

 decurrente 2,5 cm. longa; anthœcium inferum vacuum ad valvam hya- 

 linam 2-nervem linearï-oblongam ciliatam 4-5 mm. longam et paleam 

 similem redactum; anibœcium superum hermaphrodilum ; valva byalina, 



