200 Bulletin J ard. Bot. Bui tenzor g, Série 111, Vol. V, Livr. 3. 



AIso in Sumatra: Dell, Sibolangit, in forest, ait, 350 m. (J. A. 

 LôRZlNG No 6338, 17 Mardi 1919). 



Dryoptcris purpurascens (BL.) CHRIST in Philipp. Journ. 11^ . 213 ; 

 V. A. V. R., Mal. Ferns 201; Supplem. [, \bS. — Aspidiiim purpurascens Bl., 

 Enum. PI. Jav. 11, 169. 



Wlieii tlie plants occurring in the Buitenzorg Herbarium under the 

 name of D. purpurascens CHRIST are correctly determined, this species is 

 eitlier variable with very différent ultimate forms united by intermediates 

 tliat are more or less agreeing with one of the ultimates or it is a so-called 

 „collective species", which may be spliced into several distinct though related 

 species différent in aspect. Our Buitenzorg spécimens are distinguished 

 as follows: Main rhachis like the upper part of the stipe, pale-brown to 

 castaneous, smoolh or punctate- to verruculose-asperulous by the persistent 

 bases of fallen scales ; divisions (prmcipal and partial) contiguous to remote, 

 shortly acuminate to caudate, with the largest ultimate segments contiguous 

 to remote, ascending or horizontal, sessile or shortly petiolulate, linear- 

 oblons to subrhomboidal, entire or crenate, serrate or dentate to lobate- 

 sinuate; veins oblique, 3 - 6 on a side in the largest ultimate segments, 

 simple, forked or even sparingly pinnate; sori small to relatively large; 

 spores when ripe provided with reticulated winglike crests. 



Dryopteris tabacicoma V. A. V. R., Bull. Btz. XVI (1914), 11; Mal. 

 Ferns & AU. Supplem. 1, 172. 



Spores probably provided with reticulated wiiig-like crests. 



Dryopteris subalpina V. A. V. R. 



Nephrodiuni. — Rhizome probabiliter brève vel erectum. Stipites 30— 

 35 cm. longi, cum rhachide pallide fusci, dense pallideque puberuli; pili 

 stipitum + decidui, rhachidum persistentes ; pili postici minutissimi, piiis 

 paullo longioribus inlermixti, pili antici paullo longiores, setis longiusculis, 

 acutis intermixti. Frondes lanceolato-ovatae, pinnis inferioribus abrupte 

 reductis exclusis 60—70 cm. longae, 22'/2— 27'/2 cm. latae, acuminatae; 

 rhachis subtus ad basin pinnarum glandulis (aërophoris) distinctis, elevatis, 

 tuberculiformibus munila. Pinnae herbaceae, subremotae, sessiles, supra inter 

 venas parce, breviter appresso-pilosae, subtus copiose, minutissime flavido- 

 globoso-glandulosae; pinnae superiores patentes; pinnae inframedianae 

 maximae, + horizontales; pinnae inferiores non-reductae def lexae ; pinnae 

 maximae e basi subtruncata lineari-lanceolatae, r/2—2 cm. latae, infra apicem 

 sensim acuminatum, integerrimum vel subintegerrimum ± ^/j costam versus 

 incisae; pinnae reductae remotae, ^4 partem superiorem stipitum occu- 

 pantes, superiores parvae, subauriculiformes, inferiores minutissimae^ 

 Costa supra + pallide hirsuta, subtus tniiuite. pallide puberula. Lobi 



