256 MARATTIACE^. HYMENOPHYLLACE^E. 



Marattiaeese. 



Archangiopteris CHRIST et GIESENHAGEN. 



Flora (1899) pp. 72-77 ; ENGLER u. PRANTL Natur. Pfl.-fain. 1-4, p. 439. 



Archangiopteris Somai HAYATA sp. nov. Bhizoma Stipes circ. 50cra. 



longus plus minus squamatus, squamis lanceolatis membranaceis 2-3 mm. longis. 

 Frons in circumscriptione ovata 40 cm. longa 25 cm. lata pinnata, pinnis in 

 specimine nostro 4, pinna terminal! lanceolata 30 cm. longa 6 cm. lata apice 

 subito acuminatissima, acumine lineari basi 3-4 mm. la to, basi obtusa, petiolulo 

 1 cm. longo, margine a basi usque ad prope acumen regulariter crenulata, 

 crenulis \ mm. longis 1 mm. latis, ad basin acuminis dentata, dentibus ascen- 

 dentibus apice obtusis \\ mm. longis, utraque pagine glabra supra viridissima 

 subtus pallidissima, venis lateralibus simplicibus vel a basi furcatis, venulis 

 parallelis a costa circ. angulo 90 divaricatis plus minus superiore recurvis a se 

 2-3 mm. remotis simplicibus distinctis liaud elevatis baud impressis ad marginem 

 fere attingentibus vel prope marginem evanescentibus apice liaud clavatis ; 

 textura crassiuscule herbacea vel crassiuscule membranacea ; pinnis lateralibus 

 cum terminali conforrnibus sed paullo minoribus ; pagine sub soro plus minus 

 pilosa ; costa pinnae supra plana subtus plus minus elevata. 



HAB. Eahao, Dec. 1910, leg. T. SOMA. 



Eesembles Archangiopteris Henryi CHRIST et GIESENHAGEN in having 

 simply pinnate fronds with linear sori ; but differs from it by the very shortly 

 stipitate pinnae with very much longer tails at the apex, and in the sori which 

 in our species are located much nearer to the costa than to the margin. Stipules 

 on the stipes or those on the pinna-petioles are not yet seen in our specimen. 

 A full description and illustration will be given in the next volume. 



Hymenophyllaeeae. 

 Hynienophyllwm LINN. 



Hymenophyllum crispato-alatum HAYATA sp. nov. Khizoma repens. 

 Stipes 6-10 cm. longus a basi usque ad medium teres a medio sursuni alatus 

 cum alis 2 mm. latus, alis mm. latis, glaber. Frons ovato-lanceolata vel laii- 

 ceolata 14-22 cm. longa 3J-6 cm. lata apice acimiinata basi in ambitu truncata 



