gy^ GRAMINE.E Avena. 



Egypti inferiori ad Damiatam (Ehr!), Kaliiram (Schweif !), Oascs (Aschers!), 

 iiTAffghauia (Aitch !). 



3, glabrescens Coss. Exp. Alg. p. M3. — Glumella basi exceptii 

 glabra vel glabrescens. — A. Byzantina G. Koch Liun. XXI, p, 392. 

 — A. hybrida Petermann. 



Hab. iii Bithynia (Thirke), Ponto Lazico circa Djimil (Ball), Babylonia 

 inter Bassorah et Bagdad (Haussk!). 



kx. Geogr. Europa med!a et australis, Sibh-ia, Africa borealis, Abj^ssinia. 

 Quoque in America boreali et australi, P. B. Spei sed an introducta ? 



Skct. n. AVENASTRUM Koch Syn. — Spiculse in nostris erectoe. — 

 Radix perennis fasciculos foliorum sterilium culmosque 

 ferliles edens. 



* Gluma inferior uninervia, superior basi irinervia. Aristoe pars inferior 

 cyUndrica a dorso subcompressa et bisulca demum cochleatim torta. 



A. piibescens, convohita. 



* * Gluma utraque trinervia. Aristae pars inferior complanata margine albo- 

 cartilaginea demum spiraliter torta. Folia margine albo cartilagineo 

 instructa. 



A. Scheuchzeri, Argcea, pratemis, caryophyllca, agropi/roides, planicubms 



' ' ' Glunia superior 5-9-nervia. Aristse par.s inferior romplanata margine 

 albo-cartihiginea demum spiraliter torta. Folia ut subsec. prcece- 

 dentis. 



A. compacta, oligostachya, Carmcli. 



10. A. pubescens (L. Sp. 1665) cespitosa, radice fibrosa brevi- 

 ter slolonircra, culmis elatis glabris, foliis linearibus planis inferiori- 

 bus ulrinque keviusculis et ad vaginas patule plus minus pubescenti- 

 bus itilcrduin glabris, ligula oblonga acuminala glabra, paniculse 

 erectjc vel apice subiiutantis contract;e obloiigfe rainis brevibiis stric- 

 lis paucispiculatis, spiculis 3-4-tloris, glumis scariosis diaphanis 

 inferiore uui superiore trinervi, axis barbalte pilis ad basin flosculi 

 secundicjusdimidiam parlum iciiuantibus, glumelhi apice late albo- 

 scarioso laccra versus niedium dorsum arisla brunnea ea duplo lon- 

 giore aucta, palca non ciliata ©.Ilost Gram. tab. 50. — Rchb. Germ. 

 fig. 213. — A. glabra G. Koch Linn. XIX, 5, (forma glabra). 



Hab. in pratis siccis montanis et alpinis jiartis septentrionalis ditionis, 

 Oympus Bithynus inter .Juniperos rPichl!), Pontus Lazicus circa Diiniil et 

 Khabaciiar <J-KO(JO (liali), Caucasus borealis in montibus Besclitau et Mat- 

 chuka (Hoheu!), occidentaUs 2u0O'-5U00'«(G. A. Mey ) 



