318 Bulletin Jard . Bot. Buitenzorg, Série 111, Vol. IV. Livr. 2. 



GRAMMATOPTERIS, V. A. V. R. 



Sori longi, lineares, 1 utrinque, costae paralleli, parencliymate costali 

 dorsali producto (incrassato et dilatato) separati. liidusium nullum. 



Rhizoma repens vel scaiidens. Frondes cum rhizomate articulatae, 

 dimorphae, simplices, integrae, fertiles valde contractae; venae primariae 

 adsuiit, ceterae anastomosantes. 



Grammatopteris Brooksii, V. A. V. R. — Drymoglossum Brooksii, 

 V. A. V. R., in Bull. Btz. XXVlll (1918), 21. 



Forma typica; this bulletin, tab. 15, fig. \ a — b. The description of 

 this has been taken from a small, probably young, though nearly fructi- 

 ferous plant having the stipes provided with a single central, T-shaped 

 vascular bundle, the barren fronds with the margin narrowly recurved, 

 somewhat cartilagineous, with the costa flattened above, prominent beneath, 

 with 12 — 15 prominent main veins on a side, united by transversal veins 

 so as to form + 5 rows of subquadrangular primary areolae on each side 

 of the costa, divided into many irregular smaller areolae with included free 

 veinlets, and the very young fertile frond with the sori deeply immersed 

 in submarginal grooves, separated by the thickened and much dilated 

 costal parenchyma, as in Scleroglossum (when examined in a saturated 

 chloral-hydrate solution). — Sumatra. 



Var. Bcguinii; this bulletin, tab. 15, fig. 2 a — c\ Quam forma typica 

 major. Rhizoma usque ad + 4 m. alte scandens, lignosum, squamis rufis. 

 Stipites usque + 10 cm. longi, fasciculis vasorum 4, subteretibus muniti. 

 Frondes stériles subrigidae, lanceolato-ovatae vel -oblongae, 27'/2— 30 cm. 

 longae, 7—8 cm. latae, infra médium latissimae, basi rotundato-cuneatae, 

 minus abrupte subdecurrentibus, margine non vel vix repandae, leviter 

 distinctius cartilagineo-incrassatae, apice longiuscule acuminatae ; venae prima- 

 riae 30 — 35 utrinque; areolae primariae utrinque i 7-seriatae. Frondes 

 fertiles + 45 cm. longae, + 3—4 mm. latae, margine in sicco valde incur- 

 vatae. Sori partem marginalem incrassatam contingentes, parenchymate 

 costali producto (incrassato et valde dilatato) separati sed non in sulcis 

 immerci. — Ternate: Foramadiahi, in forest, ait. + 650 m. (V. M. A. 

 BEGUIN No. 1095, 12 November 1920). 



Grammatopteris pseudodrymoglossum, V. A. V. R. 



Rhizoma repens, in juventute dense squamosum, postremo glabrescens, 

 decidue cretaceum, in sicco nigrum ; squamae lanceolato-subulatae, in juvun- 

 tute ferrugineae, postremo nigro-brunneae. Stipites remoti, 1—6 cm. longi, 

 frondium steriliurn breviores, frondium fertilium longiores, fasciculis vasorum 

 4, filiformibus muniti, in jUventute postice glandulis minutissimis, oblongis, 

 resinosis, nigro-brunneis, caducis muniti, ceterum glabri. Frondes stériles 

 subrigide coriaceae, supra glabrae, subtus in juventute stipitis more resinoso- 



