( 383 ) 



— fimuticum. Flosculi neutri valvâ corollinâ cxteriore acuminato-aristatâ. 

 Hab. In insulse Canarise cultis et subhumidis. Var. a minus frequens. 



2. PANICUM COLONUM. Linn. 



P. spicis altérais conjugatisque, simplicibus; spiculis muticis; rachide trigonâ, ad pe- 

 dicellorum prseseriim inferiorum insertionern pilis paucis instructâ vel nudâ. 



Panicum colonum. Linn. ! Sp. pi., p. 84 ex ejus herbario. — Moretti, Dec., 2, p. 7. — Pari., FI. 

 pal., vol. 1, p. 42. 



Echinochloa colona. Pari., PL nov.,p. 40. 



Hab. In humentibus insulse Canarise. 



Distrib. geogr. In Europâ meridionali , in yE'gypto , in Arabiâ, in Indiâ Orientali, in 

 Brasilia, in Mexico, etc. 



Obs. Confer nostras observationes in Flor. pal., vol. I, p. 45. 



3. PANICUM PASPALOIDES. Pers. 



P. spicis linearibus, altérais, simplicibus, subimbricatis; spiculis muticis; valvâ calycinâ 

 minimâ truncalâ, altéra rolundalâ, flosculis subbreviore; flosculi masculi valvâ corollinâ 

 inferiore 5-nervi, interna acutâ. 



Panicum paspaloides. Pers., Syn. , vol. 1, p. 81. — Racldi, Agrost. brasil. , p. 45. — Kunth, Enum. 

 plant. , vol. 1 , p. 77. 



Panicum beckmanniseforme, Mihan, in Spreng., Sjsl. veg., vol. 1, p. 309. 



Digitaria affinis. Roem. et Schult.,Syst. veg., vol. 2, p. 470. 



Hab. Ad fossarum ripas et in humentibus insulse Canarise legit Despréaux. 



Distrib. geogr. In America meridionali. 



Radix subrepens. Culmi ascendentes vel decumbentes, compressi, glabri , striati, a semipede ad 

 pedem longi, supernè brevi tractu nudi. Folia latè linearia, 2 1/2-3 lineas lata, acuminata, supernè 

 striata. Vaginse laxae , compressa? , striatœ , glabrse. Ligulse loco villorum séries. Panicula terminalis , 

 simplex, erecta, striata, 4-6 pollices longa , gracilis. Rachis trigona, striata, glabra. Spicte simplices, 

 lineares, lineam vel sesquilineam latee, pollicem fere longse, ascendendo breviores, erecta?, rachidi 

 appressiusculœ, alterna? , superiores inter sese approximatse et subimbricata?. Panicula? rami flexuosi , 

 striati, margine ciliati. Spicuije parva? , pallidae, unilatérales, imbricatae. Yalv^e calycinjE valdè 

 jnaequales, altéra minor ovato - subrotunda , glabra, submembranaeea , truncata et ferè emar- 

 ginata, altéra major ovata, concava , apiee obtusissims veï truncata, valva? corollinâ? inferiori 

 flosculi hermaphroditi respondens , eaque longitudine brevior, exquisitè septemnervis , nervis viridi- 

 bus, sub apice evanescentibus. Flosculi hermaphroditi val va? cartilaginea? , inferior convexa, acuta, 

 obsolète trinervis, sub lente minutissimè striata, marginibus submembranaceis, inflexis, valvam supe- 

 riorem amplectens. Valva corollinâ superior (ejusdem floris hermaphroditi) sub lente transversè striata, 



