154 



MAUATTJACEJE. 



Marattiaceae. 



Archangiopteris CHRIST ct GIESEXHAGEX. 

 Archangiopteris Somai HAYATA (PL XIX 



et fig. 60) Ic. PL Formos. V. p. 256. Rhizoma 

 crassnni breve horizontaliter situm subrepeiis reliquis 

 stipularum et basi bus stipitum approximatim obtcc- 

 tmn, radicibus e facie inferiore rJiizomatis abundanter 

 oriundis incrassatis teretibus. Stipes circ. 50 cm. 

 lungus plus minus squamatus (squamis eastaneis 

 lanceolatis membranaccis acumiiiatis basi subcordatis 

 2-3 mm. longis) a basi ad 20cni. altitudinem arti- 

 culato-geniculatus ad bio ibidem tumido-incras- 

 satus, basi ad extremitatem subito incrassatus in 

 exsiccate fusco-nigricaus stipulis amplis semi-rotun- 

 datis sublignosis instructus. Frons in circumscrip- 

 tioue ovata herbaceo-membranacea vel herbaceo- 

 coriacea margine deorsum reourva supra atro- 

 viridis baud nit! da plus minus variegata subtus 

 pallidissima 40 cm. longa 25 cm. lata pinnata, 

 pi mil's 4-6 ; pinna terminal! lanceolata 30 cm. longa 

 apice subito acuminatissima, acumine linear! basi 

 3-4 mm. lato, basi obtusa margine a basi usque ad 

 prope acumen regular! ter crenulata (crenulis ^ mm. 

 longis 1 mm. lads) ad basin aeuminis dentata, 

 (dentibus ascendentibus apice obtusis l mm. longis), 

 utraque pagiue glabra, venis lateral! bus simplicibus 

 vel a basi furcatis, veuulls parallelis a costa circ. 

 angulo 90 divaricatis plus minus supariore reaurvis 

 a se 2-3 mm. remotis simplicibus distin -tis hand 

 elevatis baud impressis ad marginem fere attiiigenti- 

 bus vel prope marginem evanescent! bus apice hand 



elavatis, venulis recurrentibus nullis ; pimiis lateral!- p[g. @o, A pinna of Archangi- 

 opteris Somai HAYATA xf. 



