Gra"5Tixeak. Vilfa. 397 



Radix peremnis, tenuis, fibrosa, grlsea, caespitem gig» 

 nens. Culmi caespitosi, pedaies ad 2 — 4-pedales, alii basi 

 crassitie fere pciinae scriptoriae, alii tenues , erecti, stri- 

 cti , teretes, sul>j.ulcati, glabri, multinodes , ad apiccm fero 

 vaginis involuti , sub panicula nudi , laevissimi. Folia radi- 

 calia in var. «. plurima, ultrapedalia, tres circiter lineas 

 lata, erecta , stricta , lineari - attenuata , subtus convexa sul» 

 cata et glabra , supra striala villosula, marginc denticulato 

 aspcra et longe ciliata , vaginis siiis quadriinicialibus laxis 

 basi dilatatis sulcatis glal)ris margine parce vel non ciiiati^ 

 basin caulis snbbulbosam amplectcntia ; in var. /3. pauciora 

 5 — 6 pollices longa, 85 lineas lata, supra glabra, pulcher- 

 rime ciliata ; in var. 7. pollices cij longa , demum complicata 

 et ob cilia margini adj)rcssa ad speciem tota glabra. Ligula 

 villosa. Cauiina lolia radicalibus similia, sed inde a quarto 

 ab apice sursum longitudine decresccntia 8 — i -pollicaria, 

 margine minus , vaginis vero circa oras distinctius ciliata, 

 bis etiam collo plus minusve barbatis; sumnmra subulatum- 

 Ligula eadera atque in inferioribus. Panicula in «. pcdalis, 

 in /3. 8-pollicaris, in y. pollices 3 — 3^ longa, erecta, basi 

 acuta, apice attenuata , hinc circumscriptione ob!ongo-lan- 

 ceolata, in var. fi. angustior et su])C}'lindrica , in y. subfili- 

 formis. Rbacliis firma, recta, teres, glabra , striata. Rami 

 paniculae in «. bipollicares circiter , gi'aciles, integri , vei> 

 ticillato - octoni denive, erecto- patentes , undati, compres- 

 siiisculi, glabri ct lacvcs , basi bievi spatio nudi , apicem 



vissimi, linea parum longiorcs, ramo subadpressi , flexuosi, 

 glabri, ba&i nudiusculi , inferiores quatlriflori, superiorea 

 iriflori , spiculis subscssilibus , alternis quidem , sed adeo 

 approximatis , ut fasciculum lcre forment spiculaeque mulli- 

 florae speciem concilient. Singula spicula in var. «. et fi. ses- 

 quilinearis, in y. linearis , lanceolata, acuta, laevis, fusces- 

 centi - straminea. Glumae oblongae vel ovato-oblongae, acu* 

 tae, convexae, laeves: inferior valvula superiore duplo bce« 

 vior, fere membranacea, encrvis , pallida, aetate saep^ 

 bians, et tunc in multis spiculis truncata; superior istam 

 valvulam acquans, paulo flrmior, uninervis colorisque inten- 

 sioris. Valvulae purpurascentes: inferior glumam superlo* 

 rem apice excedens, lanccolata , acuminata , laevis iminCT- 

 vis ; superior isla paulo bievior atque tcnerior, at latior, 

 elliplico - ovata , obtusa, dorso plicato - canaliculata et Kccua- 

 dum banc plicam saepe dcmum rumpcns, marginibus suis flm- 

 plectens genitalia et in hi^c statu ad spcciera lanceolala. lio- 

 diculas distincias haud Tidimus. Stamina tria > anlhern lu- 



