- 142 - 



Pterid., 98; C. Chr., Ind. Fil., 147; Polypodiam umbrosim, Ait., HorlKev/., 



11!, 466. 



According to Beddome and Hooker and Baker this species is very 

 variable. Most of the plants occurring in the Buitenzorg Herbarium, refer- 

 rible to this, hâve the rachises stramineous-brown. — Two plants from 

 Sumatra (Bengkoelen, Tambang Sawah, C. J. Brooks No. 464/S ; Mt. Talang 

 Laras Talang, H. A. B. Bunnemeijer No. 5426a), also referrible to this, 

 hâve the rachises when dry black above, black-brown beneath ; in aspect 

 they are différent. 



Diplazium mesocarpum. v. A. v. R. 



Eudiplaziiim. — Stipites usque ad 70 cm. vei plus long!, in 

 sicco fusci, glabri (glabrescentes?), obtuse subquadrangulares, antice et 

 lateraliter sulcati. Frondes usque ad 90 cm. vel plus longae, longe acumin- 

 atae, 3-pinnatifidae ; rachides fuscae, glabrae. Pinnae remotae, sat as- 

 cendentes, infra pinnam terminalem 15 vel plus utrinque; pinna terminalis 

 elongato-triangularis, apicem acute acuminatum versus serrata, basin versus 

 sensim profunde pinnatipartita; pinnae latérales superiores parvae, oblongae, 

 adnatae, obtusae, serrulatae serrataeve; pinnae inferiores petiolatae, triangul- 

 ares, minime usque ad 35 cm. longae et 10 cm. latae, 2-pinnatifidae. 

 Pinnulae remotae, infra pinnulam terminalem usque ad 10 vel plus utrinque, 

 sat coriaceae, glabrae; pinnulae terminales superioresque pinnis terminali- 

 bus superioribusque plus minusve similes; pinnulae inferiores subsessiles 

 vel breviter petiolulatae, sat horizontales, lanceolatae, minime + 10 cm. 

 longae et ad vel prope basin truncatam 2'/2 — 3 cm. latae, apicem acute 

 et longe acuminatum versus serratae, basin versus sensim ^U-^U costam 

 versus pinnatifidae. Lobi oblongi, superiores obliqui, inferiores plus minus 

 horizontales, usque ad 1 cm. longi et '/2 cm. lati, obtusi vel truncato- 

 rotundati, integerrimi vel crenulati; venae obliquae, semper simplices, in 

 lobis maximis usque ad 7 — 8 utrinque. Sori breviter lineares, ± dimidium 

 longitudinis venarum metientes, ad venas mediales; indusium angustum, 

 brunneuni. 



Sumatra {Bengkoelen, Lebong Tandai, C. J. Brooks No. 405/S). 



Diplazium davaoense, Copel., in Philipp. Journ., IC , Suplem., 

 151; v. A. v. R„ Mal. Ferns, 416. 



Fragments of Elmer's Nos. 10586 and 11727 are distinguished by the 

 following characters not mentioned in Copeland's diagnosis: Rachises very 

 sparingly, minutely, deciduously squamulose; largest pinnulae truncate- 

 subcordate at the base, the lobes hardly falcate; sori occupying the base 

 of the veins, with the indusium narrow, entire or eroso-denticulate. 



Diplazium b e t i m u s e n s e, v. A. v. R 



Eudiplazium. — D. davaoensi Copel. affine: Rachides juvéniles parce 

 minutissime squamulosae et cum stipite specie glanduloso-fibrillosae, mox 

 glabrae; pinnulae miximae profundius (fere usque ad '/j costam versus) 



