418 A. W. Evans — Hawaiian JSepaticm of the Tribe Juhuloideoe. 



perianth, the bracteolc of P. granulata^ for example, being truncate 

 or obtuse, while that of P. haccifera is shorth^ bifid. My material 

 of the latter species is, however, too young to make full comparisons 

 and the published descriptions of the floral organs are very incom- 

 plete. 



2. Platylejeunea cryptocarpa (Mitt.) Steph. 



Le^eimea cryptocarpa Mitt.; Seemann, Flora Vitiensis, 413. 1871. 

 Platylejeunea cryptocarpa Steph. Bull, de I'Herb. Boissier, v, 842. 

 1897. 



Dioicous : plants greenish-brown : stems sparingly and irregularly 

 branched : leaves imbricated, the lobes ovate, slightly convex, plane 

 or somewhat decurvcd at the rounded apex, arching across the axis 

 and usually a little beyond, slightly or not at all cordate at base, 

 entire; lobule triangular-ovate, much inflated near axis, keel slightly 

 arched, indistinctly decurrent, free margin entire, strongly revolute 

 near axis, jjlane in outer half: underleaves somewhat imbricated, 

 orbicular, broadly rounded at the apex, plane or nearly so, short- 

 decurrent or vaguely cordate at base, attached by a sharply curved 

 line of insertion, entire : leaf -cells with distinct trigones and occa- 

 sional intermediate thickenings, often becoming confluent : $ bracts 

 subequally one third bifid, the divisions ovate to oblong, the lobe 

 usualh^ subacute and the lobule obtuse to truncate, margin slightly 

 ci'enulate from projecting cells ; bracteole obovate-oblong, bifid 

 about one third with rounded lobes and narrow sinus, slightly crenu- 

 late; perianth (young) compressed, obovate, antical surface plane, 

 postical surface with a broad two-angled keel, lateral keels and two 

 angles of postical keel with distinct and sharply incised-dentate 

 wings : ,5 spike oblong, occupying a short special branch ; bracts 

 in about six pairs, bracteoles wanting, except at base of spike. 



Stems 0.2™"" in diameter, lobes of leaves 1.2 x O.VS"^"^, lobules when 

 inflated 0.2x0.15"'™, underleaves 0.7x0.7'"™, leaf-cells at edge of 

 leaf 16/>i in diameter, in the middle 26/x,, and at the base 28/a, lobe of 

 bract 0.6 x 0.25'"™, lobule 0.5 x 0.25'"™, bracteole 0.7 x 0.35'"™, ^ spike 

 1x0.5'"™. 



" On Leptogiuin azuream.'''' Hawaii (Menzies). 



It will be seen from the foregoing description that this species is 

 very close to P. haccifera. It is, nevertheless, smaller in all its parts 

 and its underleaves are strikingly different in shape, so that the tAVO 

 should probably be kept separate. It is to be regretted that the 

 Hawaiian material of this interesting genus is so meager and incom- 



