180 BULLETIN JARD. BOT. BUITENZORQ, SÉRIE III, VOL. V, LlVR. 3. 



breviter aciiminatae. piniiaiae; rhacliis laevis, glabrescens, iii jiiveiitute supra 

 piiis erectis, flavido-brunneis Jiirsutula ; pili probabiliter squamiilis filiformibus 

 iiitermixti. Pinnae plus minusve coriaceae, glabrae; pinna termiiialis e basi 

 subtruiicata elongato-delloidea, infra apicem acute acumiiiatum, serrulatum 

 lobata, basi profuiide piiinatipartita, lobis maximis lineari-obloiigis, obtusis, 

 iiitegerriniis vel serratis; pinnae latérales remotae, cum rliachide articulatae, 

 ascendantes vel superiores magis patentes; pinnae superiores parvae, sessiles, 

 lineari-oblongae, plus minusve profunde lobatae, in lobos inferiores pinnae 

 termiiialis transientes; pinnae sequentes lineari-lanceolatae ; pinnae inferiores 

 maximae, brevissime petiolulatae. subsessiles, + 36 cm. longae, supra basin 

 6 cm. latae, parte superiore infra apicem sensim acute acuminatum et ser- 

 rulatum lobatae, parte mediana profunde pinnatipartitae, basi pinnatae; 

 Costa supra hirsutula, subtus glabra (glabrescens?). Segmenta usque 40 

 utrinque; segmenta superiora medianaque conferta vel subimbricata, sub- 

 oblonga ad obionga; segmenta inferiora conferta, approximata vel paullo 

 remota: segmenta inframediana vel suprabasalia maxima, lineari-oblonga, 

 2—3 cm. lopga, ^j^ — 1 cm. lata, obtusa vel obtusiuscula, integerrima, basi 

 superiore rotundata, basi inferiore abrupte dilatata et angustissime decur- 

 rentia; segmenta inferiora plus minusve abbreviata, infima libéra, sessilia, 

 basi utrinque rotundata; costula subtus squamulis paucis, minutissimis, 

 lanceolatis, brunnescentibus, spinoso-acuminatis, parce spinuloso-ciliolatis 

 munita; venae distinctae sed graciles, ascendentes, plerumque irregulariter 

 ramosae (furcatae vel duplicato-furcatae, vel parce pinnatae ramis simplici- 

 bus vel furcatis), hic illic simplices. Sori in pinnis superioribus inter costulam 

 marginemque mediani, in pinnis inferioribus ad venas inframediani, costulam 

 approximati, postremo subconfluentes et costulam plus minusve obtegentes; 

 sori inferiores (praesertim inferiores postici) plus minusve a costula remoti ; 

 capsulae paraphysibus gracilibus, piliformibus, pallidis intermixtae. 



Besides tiie normal segments and alteriiate with tliese there are not 

 rarely mucli abbreviated to conspicuously elongated ones varying from 

 short-oblong (7 mm. long, 5 mm. broad) to short-linear (5 cm. long, l'/4 

 cm. broad, acute, crenate). Subcostular row of sori sometimes accompanied 

 by a few sori placed outside near the normal ones. 



This species bears the name of Mr. P. J. JANSEN T. PzN., General 

 Manager of Simau, who has always taken much interest in Brooks' 

 collections. 



Sumatra: Benkoelen, Le bon g Tandai, in shady jungle on hill 

 side (C.J. BROOKS, July 1921). 



Alsophila allocota v. A. v. R. 



Stipites + IT'/v — 20 cm. longi, supra 3-sulcati, pallide brunnei, ceterum 

 purpureo-brunnei (vel castanei), glabrescentes, basibus persistentibus, copiosis, 

 tuberculiformibus, castaneis squamarum deciduarum asperi; squamae scarioso- 

 subcoriaceae, flavido-brunneae vel ochraceae, saepe bruimeo-marginatae, 



