Pennisetum. gramine^ 445 



2. P. elatum (Hochsl. in Steud. Gram. p. 106) perenne glabrum 

 glaucescens, culmis elalis inferne induralis dichotome ramosis et 

 vaginis paucis aphyllis lanceoiatis persistentibus obsitis, foliis paucis 

 remolis vagina longa angusta in laminam brevem convolutam 

 abeunte, spicis tenuiter cylindraceis rachide setoso-hirsuta, involucri 

 subsessilis setis rufescentibus numerosis iniequalibus spicula ses- 

 quilongioribus interioribus validioribus inferne plumosis, spiculis 

 solitariis, gluma exteriore ovata acula dimidio breviore, superiore 

 sublongiore trinervi glumella floris masculi lanceolat^ subbreviore 

 utraque acuminatis 2J.. 



Hab. in Arabia PetreA prope Nakkeb (Schimp. exs. 3081). 



Unicum specimen vidi hujus speciei culmis iuferne induratis dicholomis 

 persistentibus P. dichotomum referentis, ab eo diflfere videtur spicae rachide 

 setosA nec asperuM, spicS. tenuiore, involucri stipite sublongiore, setis rufes- 

 centibus, glumarum proportione. 



3. P. ciliare (L. Mant. 302 sub Cemhro) perenne cespitosum, 

 culmis numerosis herbaceis decumbenti-geniculatis vel ascendenti- 

 bus foliosis, foliis anguste linearibus acuminatis vaginisque glabris 

 vel pilosis, spicis cylindraceis densis rachide aspera, invofucri sessi- 

 lis setis plurimis violaceo-rufescentibus rarius albidis inaequalibus 

 interioribus basi coalitis inferne latioribus et plumosis spicula 

 \ V2-2-plo longioribus allera validiore et longiore, spiculis geminis 

 rarius solitariis, glumis subaequalibus flosculis tertia parte hreviori- 

 bus ovalo-oblongis acutis unincrviis,glumella floris masculi glumellae 

 floris hermaphrodili conformi utraque ovalo-oblonga acuta quinque- 

 nervi, palea floris masculi breviore interdum obsoleta %. P. ctliare 

 Link Hort. Beroi. I, 213 — Cenchrm rufescens Desf. Atl. H. 388 

 et P. rvfescens Spreng. — P. cenchroides Pers. Syn. I, 72. Webb 

 Phyt. Can. tab. 244. — P. distylum Guss Syn. I, 115. — P. petreim 

 Steud. Gram. p. 106. 



Hab. in desertis et cultis arenosis, Egyptus inferior orientalis ad limitem 

 deserti (Schweinf !), ditio Fayoum, Oasis magna et littus Arabicum Egypti 

 superioris (Schw I), Arabia petrea (Schimp. 153 I Boiss !), Palestina ad 

 Hebron (Roth!) et Jericho (Balll), Persia australis ad Dalechi (Ky. 170! 

 Haussk !) Belutschia (Stocks!). 



Ar. Geogr. Sicilia, insulse Canarienses, Madera et insulse Capitis viridis, 

 Africa borealis, Abyssinia, Arabia tropica, India borealis, P. B. Spei. 



4. P. Orientale (Rich. in Pers. Syn. 1, 72j perenne dense ces- 

 pitosum, culmis ereclis vel ascendentibus supra partem inferiorem 

 denudatam et vaginis siccis squamasam raniosis, foliis rigidulis 

 erecto-patulis anguste linearibus longe acuminalis subconvolutis 

 glabris vel sparsim pilosis, vaginse ore ciliato, spicis laxiusculis 

 elongatis rachide pilosa, involucris 1-3 spiculigeris pediceilis brevi- 

 bus hispidis suffultis multisetis setis inaequalibus flexuosis violaceo- 

 rubellis spiculis 1 V2-2-plo longioribus interioribus vix crassioribus 

 ioferne pilis e iuberculo o.rtis plumosis aitera aliis longiore, gluma 



29 



