AUG. CHEVALIER. NOViTATKS FLOR.^- AFRICAN.Ï, i03 



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pilis canescentibus articule multo brevîoribus dense ciliuti, illi apice 

 obsolète cupulati et dentati, hi uno latere in dentem oblongum fera 1 mm. 

 longum producti, Spiculœ sessiles, 5,5-6 mm. longae, anguste lineari-lan- 

 ceolatce, acutœ, livide violascentes vel flavescentes, callo brevissimobrevis- 

 sime barbato : gluma inferior a medio apicem versus atlenuata, acuta, 

 minute bidentata, inter carinas superne asperulas enervis, dorso Isevi con- 

 cavo; superior quam inferior paulo longior, acutissima, carinata, reverse 

 ciliata; valva inferior anguste lanceolata, acuta, vix5 nim.longa, 2-nervis, 

 reverse ciliata, vacua, superior lineari-oblonga, bifida, lobis acutis, arista 

 perfecta, columna fusca asperula 5 mm. lonj^a, seta pallida ad 1 cm. lon- 

 ga. Antlierœ 3 mm. longœ. Spiculte pedicellatœ d*, lanceolatœ, o-o,5 mm. 

 longœ, rubescentes vel violascentes; gîuma inferior 3-5-nervis, glabra, 

 cariais asperulis apice in selulam 1-2 mm. longam producta, superior 

 inferiori similis, 3-nervis, reverse ciliata; valvœ glumœ superiori similes, 

 sed byalinae, inferior ei sequilonga, 3-nervis, superior brevior, 1-nervis, 

 utrinque reverse ciliata; palea oblonga, enervis, 1 mm. longa. Antherse 

 perfectae. 



Haut-Oubangui. — Fort de Possel, continent de la Remo, 4 sept. 1902, 

 n** 5363 [Aug, Chevalier]. 



Homopogon Stapf (gen. nov.). 



Affinis Hetei'ojwgont Pers., cui habilu et structura spicularum fertilium 

 proxima, sed spiculis sessilibus pra>ter infîmam tabescentem omnibus 

 homœomorphis fertilibus, pcdicellalis nullis nisi infimo et summo minu- 

 tis plane tabescentibus. 



Racerai subcompositi in apice culmi ramorumve solitarii, multiarti- 

 culati, articulis linearibus filiformibus paulo compressis esulcatis inter 

 omnes spiculas ciliatis et obliquissime disjungentibus. Spicularum paria 

 ad spiculara iiessilem fertilem et pedicellum reducta, nisi pedicellus 

 infimus etsummusspiculam tabescentem gerentes. Spiculœ sessiles, subcy- 

 lindricîE, aristatœ; gluma inferior marginibus involuta, superne angus- 

 tissime implicata, superior obtusiuscule carinata, utrinque profunde 

 sulcata, mulica; valva inferior hyalina, vacua, superior stipiliformis, basi 

 hyalina, dein incrassata, sensim in aristam perfectam abiens; palea 0; 

 lodicuîte glabrœ. Antherœ mihi ignota^. Stigmata infra médium exserta. 

 Caryopsis ignota. Pedicelli brèves, obliquissime truncati, basi fulvo- 

 barbati, — Gramen africanum angustifolium, annuuni, racemis densilloris 

 subcylindricis, spiculis adpressis haud vel vix imbricatis. 



If. Chevalieri Stapf (sp. unica). 



Gramen annuum, a basi culmos erectos graciles circa 1 m. altos 

 5-nodos glabros la?ves emittens, internodiis summo excepto longe exsertis. 

 Foliorum vagina? teretes, arcta^ infima hirsutiuscula, caetera' glabne; 

 ligulai scariosas truncata', 1,5 mm. longœ; laminaj plan;n,lineares,tenuis- 

 sime acutataî, 10 25 cm. longa?, 3-4 mm. lata^, subtus sparse liirsuta-, arcte 

 tenuiter nervosœ, summa subfiliforniis, ad 5 cm. longa. Hacemus pedun- 

 culo e vagina summa brevissime vel vix exserto suffultus, gracilis, 4-8 cm. 

 longus; articuii ad 20, circiter 4 mm. longi; pedicelli vix 2 mm. longi, 

 villes fulvis paulo superati. Spiculse sessiles cum callo pungente fulvo 



