— 53 — 



rnro indcfinlUi, ovario aborticnle, rarissime A; paucis sepa- 

 liclium Idlium el glumellae steiiles plures adduntur; filamenta 

 gracilia , raro basi connata ; antherae normalcs, lineares, 

 dorsifixio, longitrorsum v. sursum dehiscentes; polhnia sub- 

 globosi laevia. Ovoj^ian hberum, stjh 2, raro 5-1, stigmata 

 longa piiosa, ovuhim unicum, parieti ovarii postico per totam 

 longiludinem affixum v. erectum, raro appensum, micropyle 

 semper inhra. CciTjojms hbera v. cum ghimeUis connata, 

 pcricarpio tenui raro rrustaceo, carpomphalo basilari passim 

 in sulcum producto. Embryo minutus, basi albuminis fari- 

 nacei antice apphcitus, e cotyledone scutehiformi , rarius 

 convoluta v. et ahera minima proesente (epiblasto) ct blaste- 

 mate constans. 



J. AvEiMNAE* paniculatae, spicuhs 1 - go -floris, superne 

 abortivis, saepe aristatis : 



a, A^7'0stcce : spicuhs urii-sesquifloris : -— Coleanthus ^ 

 Agroslis , Apera , Gastridium , Cinna , Pofypogon , Miih- 

 Icnhcrgia. . . . 



h. AvcnecB : spiculis 2 - oc -floris, arista glumehDe tor- 

 tih -< : — Coryncjjhorus ., Tieschampsia ^ Aira, Lagurus, An- 

 thoxanthum., Hierochloa ., Trisetum^ Avena , Arrlienatherum^ 

 JEriachne, Danthonia. . . . 



c. Stipcce: spiculae uniflorae, arista torta, basi articulata, 

 V. ?)-fida : — Orjzopsis^ Lasiagrostis. Stipa^ Aristicla... 



d. Phragmitece: spiculae 1 - co - florae , ghimchae pihs 

 slipjilae : — Calamagroslis., Dcjcuaia^ Amjnophila^ Arujido^ 

 Phragmiles., Gj^nerium. ... 



B. Panicinae: panicula , passim spicseformis , spiculae 

 l-^-florae, saepius inferne abortivae, ghimehae chartnceae, rarius 

 aristatae. 



a. Panicece: spiculae sesquiflorae;mnticae ->; ghimae 2-1-0: — 

 Reimaria^ Paspalu7n.,Milium., Piptalherum., Eriochloa., Pani- 

 cum., Isachnc, Stenotaphru7n, Oplismenus., Echi^iochloa, Setaria, 

 Pennisetu77i, Ccnchrus, Lappago, Spi^ufex.... 



5 



