— 500 — 



calycina 2-valvis, valvis oiibat'(|ualil)us sliiclis ; eurollina bievior 2-valvis, valva 

 externa oarlilaginca aristala , arisia Icrniinali recta articulata , valva iiilenia 

 nicmbranacca longior: s([iiainae noctarilcrae duo lineares: caryopsis libera, glu- 

 mis corollinis, arete einta. 



4i. AGROSTIS L. Flores panieulati in aiillicsi imtenler, antea, el poslea 

 eontracti : perigoiiii glunia calycina 2-valvis persislens ; corollina 2-valvis , 

 valvis inaec[ualibiis , externa major intra apicem aristala vol miitica, interna 

 minor, (pianiloque obsoleta : caryopsis libera. 



\o. CKVrSlS Siliirb. Flores in raeeino contractissimo : perigonii gluma 

 calycina 2-vaIvis, valvis inaequalibus muticis carinalo-compressis ; corollina 

 longior 2— valvis, valvis inaetpialibiis muticis : caryopsis libera. 



16. LAPPAGO Schrcl). Floics subterni , latcrales liermaphroditi , inter- 

 medii inasculi vel ncuti'i, in racemo laxilloro : perigonii gluma calycina 2— 

 valvis, valvis admodum inaequalibus, externa major ventricosa dorso ehinala, 

 interna minima plana nuda; corollina 2-valvis nuda in valva calycina majore 

 abscondita, valvis inaequalibus, major cartacco-membranacea , minorem ex- 

 ternam hyalino-mendjianaecam, involvcns : squamae nectarifcrae duo niinu- 

 tae : caryopsis libera minimc sulcata. 



H. HORDEL'M L. Flores tcrni, intermedins bermapbi'oditus, latcrales ma- 

 sculi aut neutri, in spica distica continua articulata: perigonii gluma calycina 

 2-valvis, valvis angustissimis aristatis ; corollina 2-valvis , valva externa mi- 

 nor acuminata aristata, in floribus lateralibus (piandoque nuda, interna biden- 

 tata : squamae nectarifei'ae duo variae : caryopsis valvis corollinis cinta. 



-48. DKirrAIll.V Ilall. Flores in spica liliformi digitata : perigonii gluma 

 calycina 8-valvis, valvis omnibus inaequalibus adprcssis, externa minutissima ; 

 corollina major 2-valv'is cartilaginea, valvis inaetjualibus, externa concava : ca- 

 ry>opsis valvis cakynis tunicata. 



49. CVXODON Jlicli. Fores in spica liliformi digitato-fosciculata : peri- 

 gonii mutici gluma calycina 2-valvis, valvis subaequalibus ovato-lanceolatis : 

 corollina longior cartilaginea 2-vaIvis, valva externa naviculars, internam aii- 

 gustissimam canaliculatam includens : paleae neetarifei'ae duo miniinae : earyo- 

 |>sis valvis corollinis tuiiieata. 



50. IMIALARIS L. Flores in racemo spicii'ormi composiio, vel panicula 

 lacemosa : perigonii gknna calycina 2-valvis, valvis aequalibus navicularibus 

 vel carinatis : corollina brcvior inclusa 2-l-valvis, valvao duo inleriores ad- 

 modum majores ; caryopsis valvis corollinis tiniicata. 



51. L.VGURUS L. Flores in racomo spiciformi densissimo ; perigonii 



