GRAMINE.E. 



87 



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LI. IMnelilenltergia SCHREB. 



Muehlenbergia arisanensis HAYATA sp. nov. (Fig. 54). Caulis 60- 

 90 cm. longus gracillimus rectus erectus basi pauro repens, internodiis inferi- 

 oribus 5 cm. longis teretibus glabris Irevibus, ad nodos radicans a basi usque ad 

 medium remote foliatus sursuni baud foliatus. Folia mediana linearia a se 5 



cm. distantia circ. 10cm. longa 4mm. lata 

 apice acuminata basi contracta ad basin hirsuta 

 casterem glabra utraque pagine margineque sca- 

 berrima, ligula \ mm. longa 2 mm. lata hyalina 

 apice truncata hirsuto-ciliata, vagina 6 cm. longa 

 baud hirsuta plus minus scabra. Panicula cylin- 

 drica 18cm. longa, ramis primariis scabris alternis 

 2-3-fasciculatis ascendentibus ad rhachin pani- 

 culre fere contactis 2-3 cm. longis, fasciculis 1-2 

 cm. remotis. Spicula3 generaliter sed baud semper 

 geminatim secus rhachin ramulorum panicularum 

 dispositee, altra longiore altra breviore pedicel- 

 lata, pedicellis brevioribus -|mm. longis, longi- 

 oribus 1 mm. longis scabris ; gluma I. ovata 

 semi-hyalina \-\ mm. longa apice obtusa glabra ; 

 gluma II. semihyalina oblonga If mm. longa 

 obtusa cum gl. I. persistens ; gluma III. 

 lanceolata 2 mm. longa mm. lata apice acumi- 

 nata 2-dentata, inter dentes arista 8 mm. longa 

 scabra instructa clorso 3-costata purpurea ad 

 costas scabra basi hirsuta ; gluma IV. lanceolata 

 apice acuminata 2 mm. longa purpurea basi 

 hirsuta 2-costata, ad costas scabrida, basi dorso 

 hirsuta ; palea 0. Anthera ellipsoidea. 

 mm. longa \ mm. lata longitudinal iter rugulosa. 



Fig. 54, Muehlenbergia ari- 

 sanensis HAYATA. a, a spikelet ; 

 b, gl. I.; c, gl. II.; d, gl. III.; 

 e, f, g, glume IV., seen from 

 different sides ; h. i, a stamen, 

 seen from different sides ; j, a 

 caryopsis. 



Caryopsis ellipsoidea 1 



HAB. in monte Arisan, ad 2500 m. alt., leg. U. FAURIE, Dec. 1914. 

 Near M.japonica STEUD., but differs from it in having far much smaller 



I. and II. glumes. 



