POLYPODIACEiE. 287 



Dorsal view of a portion of the main rhachis. 1 b. Dorsal view of a 

 small portion of the frond. 1 c, c. Hairs from veins on the under side. 

 1 d. Scales from the under side of the costa. 1 e. Vertical section 

 of a sorus. 1/ Hairs from the receptacle. 1 g. Sporangium. — The 

 dissections more or less magnified. 



6. Alsophila Samoensis, Sp. Nov. (Tab. 40.) 



A. arborescens, inermis; stipitibus cum rhachi communi supra fulvo- 

 tomentosis; frondibus glabris fere membranaceis bipinnatis; pinnulis 

 sessilibus elongato-lanceolatis vix acuminatis pinnatifidis, segmentis 

 oblongis obtusis subfalcatis serratis; rhacJiibus partialibus cum costa 

 venisque (tenuibus furcatis supra setosis) subtus bullato-squamosis ; 

 sorts paucis infra-axUlaribus costw plusqaam margini proximis; 

 receptaculo columnari squama lacera stipato; pills clavatis inter 

 sporangia, 



Hab. Samoan Islands. 



Plant arborescent and destitute of prickles. Stipes and main rhachis 

 above furnished with a short and tawny tomentum. Fronds rather 

 flaccid, smooth, submembranaceous, bipinnate; the primary divisions 

 rather distant and spreading. Pinnules sessile, elongated-lanceolate, 

 with a slightly acuminated serrate point, deeply pinnatifid at the base, 

 while towards the point they are less so. Segments oblong, obtuse, very 

 slightly falcate and serrated, beset with bullate scales on the costa and 

 veins betieath; the rhachis of the pinnae and pinnules furnished above 

 with setose hairs. Veins slender, and most prominent on the under 

 side, usually only once forked. Sori few and small, from 4 to 8 on 

 a segment, seated on the veins immediately below the fork, and closer 

 to the costa than the margin. Receptacle columnar, furnished with a small 

 lacerated scale at its base. Sporangia mixed with articulated, clavate 

 hairs. 



Plate 40. — Fig. 1. Portion of a frond, of the natural size. 1 a. 

 Small portion of the frond, seen from below. 1 b. Small portion of 

 the costa of a pinnule, seen from above. 1 c. Hairs from the costa. 

 1 d. Hairs from veins on the under side. 1 e. Receptacle. If. 



