436 GRAMiNE^ Panicum, 



interdum pilis paucis obsita, spiculis quadriseriatim rachidi aspe- 

 rulse insertis breviter pedicellatis ovato-oblongis acutis turgidulis, 

 glumis ad nervos et margines pilis brevibus rigidulis asperis acutis 

 inferiore cordata dimidio breviore, superiore elevatim nervosS et 

 glumella lloris masculi sequilongis, flosculi hermaphroditi subsequi- 

 longi oblongi acuti glumella et palea coriaceis albis Jsevibus O. 

 Trin. Ic. tab. 160. — P. zonale Guss. Prodr. I, 62. — Oplismenus 

 colonim H. B. K. Nov. Gen. I, 112. — P. Crus Galli var. colonum 

 Gosson Expl. Alg. p. 28. 



Hab.ia cultis Egypti ad Alexandriam (Husson! Gaill !) ad Kahiram (Auch i: 

 2963!), in Oasibus (Asch! Schweinfl), SyriA littorali ad Sidonem (Bl !),. 

 Babylonia ad Bagdad (Noe 250 1). 



/3 kianthum. Spiculae glabrse Iseves, spicse depauperalae et iaxiores. 

 — P. Arabicum Nees in Steud. Gram, p, 63. 



Hab. in Egypto prope Alexandriam (Duparq f), in Egypto superiore 

 (Boiss !). 



Ar. Geogr. Hispania australis, Sicilia et Italia australis, insulse Canarienses 

 et Azoricae, Africa borealis, Nubia, Abyssinia, Arabia tropica, India et ejus 

 insulse, America borealis et tropica. 



Sect. V. BRACHIARIA Benth. — Spiculae biseriatim in racemos 

 spiciformes unilaterales paniculse imbricatse. Inflores- 

 centia Paspali sed gluma inferior non deficit. Glumella 

 nunquam aristata. 



7. P. obtusifolium (Del. Eg. p. 127, tab. 5, fig. I) perenne 

 fluitans glabrum,culmis inferne prostratis ramosis et ad nodos radi- 

 cantibus dein ascendenti-erectis, foliis linearibus patentibus obtusis 

 vel acutiusculis, vaginis inferioribus dilatatis patentibus, racemo ter- 

 minali simplici unilaterali spicis linearibus in racheos dilatalae exci- 

 curis sessilibus eique adpressis solitariis alternantibus constanti, 

 spiculissecus spicae rachidem compressam glabram bifariis sessilibus 

 oblongis acutis subcompresssis, glumis membranaceis ovato-orbicu- 

 latis, inferiore uninervi flosculo hermaphrodito quintuplo superiore 

 trinervi eo dimidio brevioribus, flosculi masculi glumella flore her- 

 raaphrodito sublongiore membranacea obsolele uninervi, pale& sub- 

 angusiiore, flosculi hermaphroditi ovati acuti glumella et paleel 

 coriaceis rugulosis %. Digitaria obtusifolia R. et Sch. Syst. II, 889- 



Hab. in fossas et canales Egypti, Kahirae ad Birket el Kotly (Del. Bove !) 

 ad Damiatam et Tanim (Del.). Fl. autumno et hyeme. 



Racemus semipedalis, spicae 6-8 lineas longse 1 V» latae interstitiis earum 

 longitudini aequilongis vel brevioribus remota;. Species racemi rachide 

 dilatata glumisque inaequalibus a P. fluitanti distincta. 



Ar. Geogr. Algeria prope la Galle. 



8. P. paspaloides (Pers. Syrr. I, p. 81) perenne fluitans gla- 

 b.'ura,culmis inferne prostratis et ad nodos radicantibus dein erectis, 



