376 T. II. p. 6-8. TRiiND. DIGYNL4. ATEsi. 



-¥ 



s 



pilosiusculis, margine scabris; panirula suHverticillata, pa- 

 tula, subsecunria; glumis spiculam Irifloram su' aeqaantibus ; 

 paleis inaequalibus ^ inferiore majore, quadrifido - dentata, 

 dentibus subulatis. Hnmh. et BonpL nov^ gen. red. 

 Hnnth III, p. 148. Poiret Enc^ melh, SuppL V. p* 



f 565- TRisETiPauM viride. Pair. ib. p, 366. 



Culmns erectus, simplex, Sped-, glabcr- , Folia plana, striata, 

 externe glabra. Vaginae stri'atae, superiorcs scabriusculac. 

 Ligula elongata, glabra. Panicula ramosa, g-io poU. , apice 

 •ubnulans, ramis rbaohique scabris. Spiculae floribus omni-^ 

 bus fertilibiis. Rhacbts spiculae albo-pilosa. Gltimae subae- 

 quales, lingares,^ ^ubulatae, carinatae, virides, glabrae, dorso 

 scabrae, Palea inferior lanceolata ^ concava, viresccns, apice 

 tub - S-nervis, dorso scabra et aristata ; superior brevier, 

 bjalina , binervis, apice bidentata, dentibus subulalis, mar- 

 gine scabriuscula. Arista tortilis palea longior. Htinth, 

 Jn alia planitie Mexicana inter Salamanca et Qaer^ 



iaro, O. 



J- 



n. 37. AvEfSA, lolacensis Humb. et Bonph^ culmo 'feu- 

 p^rne pubescente; foliis scabris; panicula coarctata , cylin- 

 draccaj glumis spiculam bifloram subaequantibuft ; paleis in- 

 aequabbus, inferiore inajore bifido - dentata^ dentibus sUb* 

 aristatis; arista dorsali , reflexa, Humb. et BonpL nov. 

 gen. red. Kunth IIL p. 148. Poire t JBnc. jneth^ SappL 

 V. p* 565. 1'risetaribm tolascense Poir^ ib. V. p* 3^6' 



Rad. fibrosa. Gulmi cespito&i, erecti, simpiices, 1 \f% ped-, striatic 

 interdum glaberrimi. Nodi glabri. Folia plana, striata, mar- 

 gine scabra. Vaginae striatae, glabriusculae. Ligula laci- 

 niata^ glabra. Panicula ramosa , 3 poll,, ramis abbrcviatis. 

 altcrnis, aSpressis , rbacbique pubeticenti - pilosis, Spiculae 

 oblongae, floribus 2 bermaphroditis. Glumae obfongae, acu- 

 xnioato subulatae, subaristatae , carinatae, obscure 3 ant 5- 

 nerves, subaequales, longitpdine fere spiculae, glabrae, dorso 

 scabrac, virescentcs, apice purpurasoentes. Paleae oblongo- 

 lanceolatae, apice bifido - dentatae, dentibus subulatis, flavcs- 

 centes, glabrae, dorso scabrae, inferior latior, pauloque lon- 

 gior, 5-neryis; superior bicarinata, byalina, bidentala, dorso 

 scabra. Arista scabra, palea longior, Kanthn In apri' 

 . €k i frigidis prope Tolneca. %. 



1 X _ - 



n- 38. AvENA elongata Humb, et BonpL; culmo g^a* 

 berrimo; foliis margine scabris; panicula coarctata, cylin- 

 ciracea ; glumis spicule biflora brevioribus; paleis inaeqoa- 

 libus bifido-dentatis^ dentibus subaristatis ; arista dorsali) 

 rectS. Humb. et BonpL nov. gen^ red. Hunth III- 'Z'- 

 148, Poiret Eiic. meth. SnppL V. pi 566. TrisetA* 

 BiUM elongaium Poir. ibid. f^. p. 366. 



\alde affinis tolacensi sed dlversa, pracler cliaractercs datot» 

 glumis vrridibut. An ejuidem varietas ? Cultrms pcJalis no- 

 diqijc glabri. Folia utrinquc g'abra , uti vaginae et liguIa. 



