724 BÜLLEIIN DK I.'hKKBIKK KOlSSlKIt (2'"« SKR.)- '-^^'^ (lÖ) 



parce et minute piloso-denticulata), dorso lale carinalis (carina viridi. usque ad 

 0,3 mm. alla, ad basin versus sensini humiliore apice acuminata), Imsi auricula 

 truncato-rolundala ornatis ; sporophyllis dorsalibus maxiniis c. 2 mm. longis, 

 c. 0,70-0,75 mm. latis; sporophyllis ventralibus æquilateris, e basi dorso auricu- 

 lata (auricula truncato-biloba) ovato-deltoideo-cymbiformibus, longiuscule 

 acuminatis, subhyalino-pellucidis, ubique cellulis subscieroticis scabriusculis 

 prosenchymaticis, margine piloso-denticulatis (pilis denliformibus usque ad 

 0,03 mm. longis), dorso carinatis (carina viridi, vix ultra 0,1 mm. alta ad basin 

 versus humiliore, apice acuta, ad apicem versus parce piloso-denticulala) ; sporo- 

 phyllis ventralibus maximis c. 1 '/a mm. longis, c. 0,7 mm. supra basin latis; 

 macrosporangiis in axillis sporophyllorum ventralium plurimorum; micros- 

 porangiis in axillis sporophyllorum ventralium superiorum et dorsalium 

 omnium sitis; macrosporis usque c. 0,27 mm. crassis, sulphureo- vel subauran- 

 tiaco-albidis, latere verlicali costis commissuralibus obscurius sulphureis vel 

 aurantiacis ornatis, ceterum fere lævibus, obsolete et minulissima foveoialis; 

 microsporis c. 0,033 mm. crassis, croceis, ubique minute verrucoso-granulalis, 

 coslis commissuralibus tenuibus parum perspicuis rectis præditis. 



Species Selaginellœ heterostachydi Bak. proxime affinis habituque similis, 

 differt foliis lateralibus subæquilateris vel parum solum inæquilateris. foliis 

 intermediis sensim acuminatis .sed non in cuspidem arisliformem contractis, 

 sporophyllis dorsalibus carina altiore præditis minus inæquilateris et longioribus, 

 microsporis minus crebre verrucoso-granulatis, macrosporis sublævibus latere 

 rotundato obsolete et minutissime solum foveolatis. 



Habitat id regno Siam, distr. Raheng, c. 16° 30' lat. bor., in silva aperta 

 Wang Chow prope Tapolsah (E. Lindhard n. 17; 18. m. Jan. 1904). 



APPENDIX 



100. Ustilago Arundinellæ Brefeld. 



The spikelels of Arundinella setosa Trin. (No. 73) are attacked by a fungus 

 which Prof. Dr. E. Rostrup has been kind to name as Ustilago Arundinellæ Bref. 



