r^,^ GRAMiNE^E Trisetutn, 



barbatis glumella apice breviter biseta arista e medio dorso genicu- 

 lata ca subtriplo longiore obsita Q. T. myriantlmm Parl. Fl. It. - 

 Cesati Ic. Stirp. It. — Avena Mediolanemis Bals.— Avena agrostoi- 

 des Grisci). Spic. II, p. 454. 



Hab iu pascuis Aicadi?o (Sartorii;, Laconia in cultis Taygeti (Pichll), 

 /Elolia' prope Agrinion (Heldr !), Thracioe prope JEno& (Griseb ). 



Ar. Geogr. Italia superior. 



2. T. condensatum (Link Enum. Ber. I, p. 82, sub Avend) 

 annuum. cuhnis srepius cespitosis pumilis inferne geniculatis, foliis 

 angusle linearibus planis superne pilosis, ligula ovata lacera, pani- 

 cura brevi ovata sjepe lobata demum contracta ramis pedicellisque 

 capillaribus brevibus asperis, spiculis minutis subtrifloris, glumis 

 glabris acumiuatis inferiore anguste lanceolata uninervi, superiore 

 duplo latiore et manifeste lor.giore oblongo-ianceolata basi Irinervi, 

 a.xi flosculisque glabris, glumella apicebreviter biseta supra medium 

 dorsum arista gcuiculata ea subduplo longiore instructa. palea tertia 

 partc breviore ©. T. condensaium Schult. Syst. Mant. II, p. 366. — 

 T. aureiwi Ten. Fl. Nap. II, p. 378, tab. 107. — Avena pumiia Urv. 

 Enum. p. H, non Desf. — A. chlorantha Link Linn. XVII, p. 401 et 

 Herb! — T. Noeunwn Boiss. Diagn. Ser. 1, 13, p. 48. 



Hab. in arenosis regionis maritimae, Gorcyra (W. Barbey !), Attica prope 

 Eleusin (Heldri), Peloponnesus ad Naupliam, Gorinthum, Xylocastroa 

 (Orph!), Byzantii(NoellG!). 



Ar. Geogr. Italia meridionalis, Sicilia, Melita, in Gallia australi sed ibi 

 for»an sporadicum. 



3. T. Rohlfsii (Aschers. Verh. Bot. Ver. Brandenb. XXI, p. 71.) 

 annuum, caulibus pluribus tenuibus a basi geniculata ereclis, foliis 

 brevibus anguste linearibus vaginisque villosulis, ligula exserta 

 obliquetruncata, panicula3anguste spiciformis denstc sublobatne ramis 

 strictis inferne breviter nudis, spiculis subquadriiloris, glumis flos- 

 culis subbrevioribus oblongo-lanceolatis acutis ad nervos ciliato-sca- 

 bris inferiore angustiore et triente breviore uniuervi, superiore 

 trincrvi, rachide pilis flosculo multo brevioribus obsita, glumella sca- 

 briuscula dorso paululum infra apicera breviter bidenlatum aristS 

 recta aiquilonga aucta Q. 



Hab. in cullis arenosis ad El Qasr Oaseos parv» (Asch. exs. 6221). 



Semipsdale aut paulo elatius, panicula ssepe bipollicaris 4 lineas circ. lata, 

 spicula abs.iuc aristis 2 Uneas longa. Facies T. pumili sed major, glumae non 

 villosa!, rachis pihs brevissimis nec longis ol)sita, glumella' apice fere nec 

 ad tertiam partem superiorem aristata. Affinis qiioqus facie Kmlerive Michelii 

 et sicut T. jjumilum transitum inter Triseia et Kcelcrias prsebens. 



4. T. pumilum (Desf. Atl. 1, 103, sub Avend) annuum, culmis 

 pumi.i.s saepius pluribus tenuibus erectis vel geniculato-ascendenti- 

 bui, foliis linearibus planis vaginisqife pubescentibus, ligula brevis- 



