Van ALDERWtKELT VAN RoSENBUKCiH : Malayaii lenis 12. 1Q3 



Cyclophorus astcrosorus (Bk.) C. Chk. Iiul. Fil. 198 ; V. A. V. R. Mal. 

 Feriis 694; forma siibfurfnracea V. A. V. k. Bull. Btz. Il (1920), 140.— 

 Polypodium astcrosonim Bk. in Jourii. of Bot. XVIIl, 214. 



A collection of several spécimens recently gathered by BUNNF.MFJJKK 

 proves tliat tliis species is very variable and tliat- tlie type and tlie form 

 considered by me to be distinct from tlie type are runninjj into eacli otiier 

 so gradually tliat it is impossible to draw llie précise line of démar- 

 cation. 



Rhizome wide-creeping, slender, branclied, clotlied witli moderately 

 large, pale- or yellow-biown, laficeolate, membranaceous, sliglitly crisped, 

 finely long-acuminate, entire or very minutely denticulate scales peltate 

 and adpressed at the base, spreading in the upper part. Stipes remote, 

 l'/2— 15 cm. apart, 1'/.,— 15 cm. long, soon naked, when dry pale-brown. 

 Fronds linear-lanceolate, linear or linear-oblanceolate, 7'/2— 35 cm. loFig, 

 ^/j — 2'/2 ^"1- broad, the edge often narrowly recurved, the base narrowed 

 gradually, the apex subacute or more commonly suddenly, shortly and 

 bluntly mucronate-acuminate or occasionally longer and more acutely 

 acuminate. Texture more or less coriaceous, thin to thick, flaccid to rigid ; 

 upper surface naked (glabrescent?) ; under surface coated with a more or 

 less thin, tomentiform or furfuriform layer of pale (whitish or brownish), 

 much adpressed, crisped, crowded, interlaced, very fine hairs intermixed 

 with and surpassed by numerous short-stalked, long-branched, rufous stellate 

 hairs; main veins ascending, obscure, enclosing several longitudinally 

 quadrangular areolae; included veinlets simple or forked, excurrent or 

 récurrent, free or connected. Sori rather lage, remote or crowded, occupyiiig 

 the upper ^l-j—~l-j of the frond, not reaching the margin, placed in 2-3 

 rows between the main veins, 5—6 in a row, when young liidden under 

 the thin layer of tomentum; capsules intermixed with rufous stellate 

 hairs. 



By the venation intermediate between §§ Niphoboliis and Nipfwpsis. 



Sumatra. 



Davallia solida (FORST.) Sw. in SCHRAD. Journ. 1800^, 87 ; V. A. V. R. 

 Mal. Ferns 305. ~ 7 richomaries solidiim FORST. Frod. 86. 



Forma tomentella RSÏ. in FED. Rep. XIII, 213; V. A. V. R., Supplem. 

 1, 224. — A plant from Poeloe Sebesi near S u mat ra (W. DoCïERS VAN 

 Leeuwen No. 5077), referrible to this form, has the sori with the indusium 

 narrowly cylindrical, + 3-5 times as long as broad. 



Dictyopteris distincta V. A. V. R. 



Arcypteris. — Stipites usque ad 8 cm. longi vel longiores, cum rhachide 

 costisque obscure fusci, fere nigro-brunnei, parce fusco-squamulosi. postice 

 parce fibrillosi, giabrescentes, antice dense castaneo-gianduloso-fibrillosi. 

 Frondes oblongae, ± 27' 2 cm. longae et l2'/2 cm. latae, abrupte acuminatae, 



