Panicum. gramine^ 437 



foliis linearibus elongatis acuminalis, vaginis inferioribus dilatatis 

 palentibus, racemo termiuali simplici unilaterali spicis linearibus 

 secus rachidem non dilatatam alternis approximatis subsessilibus et 

 ei adpressis constanle, spiculis secus spicae rachidem compressam 

 setuloso-asperam breviter pedicellatis biseriatim imbricatis ovatis 

 minutis turgidis, glumis membranaceis inferiore iate obovata trun- 

 cata flosculis quadruplo breviore subenervi, superiore fiosculis sub- 

 breviore quinquenervi flosculi inferioris masculi glumella et palea 

 membranaceis illagluma? superiori simili sed sublongiore et aculiore, 

 palea vix angustiore, flosculi hermaphroditi glumella et palea coria- 

 ceis oblongis acutiusculis %. P. truncatum Trin. Diss. II, p. J30. 

 Icon. tab. i68 non Nees. 



Hab. in fossis et ad canales Egypti ad Alexandriam CAuchl Gailll 

 Schweinf ! Letourn !), ad Damiatam (Ehrenb!), ad Kahiram (Sieb. exs. sub 

 P. colonum!), in Oasibus (Ascherson! 591 ! et 2411 !). 



A P obtusifoUo racemi rachide non dilatata, spiculis miuoribus turgidis 

 spicse rachide setuloso-aspera facile distinguendura. 



Ar. Geogr. Abyssinia, India, Mauritius, America. 



9. P. fluitans (Retz Obs. III, p. 8) perenne fluitans glabrum, 

 culmis inferne ad nodos radicanlibus, foliis linearibus elongatis longe 

 acuminatis, vaginis inferioribus dilatatis, racemis in culmo ssepe 

 pluribus elongdlis, spicis linearibus saepius elongatis in racemi 

 rachide non dilalata sessilibus eique adpressis solitariis inferioribus 

 distantibus, spiculis secus spicse rachidem compressam glabram 

 rarius margine asperulam bifariam imbricatis sessilibus ovato-oblon- 

 gis acutis subcompressis, glumis membranaceis inferiore truncata 

 brevissima superiore vix longiore orbiculari ovala obtusa, flosculo 

 inferiore ad glumellam membranaceara elevatim trinerviam ovatam 

 acutam reducto, flosculi hermaphroditi glumellam neutram sequantis 

 glumella et palea coriaceis ovatooblongis acutis rugulosis %. P. bri- 

 zoides RetzObs. V., p. 18 et Willd.Sp. I, 338, non Linn. 



Hab. in aquis et fossis,in Egypto indicatum, sed omnia specimina quae vidi 

 P. paspcUoidem sistunt; probabiliter iu AfiFghania et Belutschia. 



Sepe cum P. paspaloide et cum P. flavido Retz. = P. briznde Jacq, 

 Ecl. II, t. 2. Trin. Ic, tab. 158, confusum, facile dignoscitur spiculis a dorsa 

 compressis, flosculo inferiore unipaleaceo neutro, glumis minutis sabaequi- 



longis. 



Ar. Geogr. India subtropica in Pentapotamide et tropica. 



10. P. eruciforme (Sibth et Sm. Prodr. I, p 40. — Fl. Grsec. 

 I, tab. 59) annuum cespitosum, culmis inferne ramosis et geniculatos 

 ascendentibus, vaginis foliisque moUiter pubesceuti-pilosis hiscebre- 

 vibus patentibus latiuscule lanceolalis, ligula ciliari, spicis linearibus 

 solitariis breviter pedunculatis secus rachidem tenuem hirtam in 

 racemura brevem terrainalem dispositis axi adpressis approximatis 

 basi interdura subcompositis, spiculis biseriatim intricatis pedicelli- 



