424 A. W. Evans — Ilawauan Hepaticce of the Tribe Jubuloidece. 



falcate-ovate, ai-ching to about the middle of axis, rounded but not 

 cordate at base, entire or, usually, with a few (one to five) short 

 blunt teeth near the apex, the apical tooth being the largest, margin 

 often somewhat revolute ; lobule (when well developed) ovate from 

 a narrow base, narrowing at first abruptly, then more gradually, 

 keel arched, distinctly decurrent at base, free margin strongly invo- 

 lute at base, plane in outer part, entire or with a single more or less 

 distinct blunt apical tooth; lobule often very poorly developed: 

 underleaves distant or contiguous^, broadly obovate-orbicular, grad- 

 ually narrowed toward base, slightly decurrent, truncate and often 

 reflexed at apex, entire or minutely crenulate or denticulate in upper 

 part, rarely slightly retuse : leaf-cells with conspicuous trigones and 

 intermediate thickenings, often becoming confiuent near apex and 

 margin of lobe : 9 inflorescence on a principal branch, with one or 

 usually two innovations; bracts deeply and unequally bifid, the lobe 

 oblong or ovate, apiculate at the rounded apex, subentire or usually 

 sparingly dentate in upper part (two or three irregular teeth on each 

 side of apex), entire below, lobule lanceolate, acuminate, entire or 

 nearly so ; bracteole free, orbicular-ovate, truncate or rarely shortly 

 bifid at the apex, entire or commonly coarsely and irregularly dentate 

 above the middle ; perianth obovate, rounded above and abruptly 

 narrowed into a short beak, more or less compressed on sides, 

 grooved and with one large and usually two small supplementary 

 keels on antical surface, on postical surface with a broad, three- or 

 four-plicate keel, the keels indistinctly and interruptedl}^ winged, 

 entire or slightly sinuate-denticulate : $, spike terminal or intercalary 

 on a large branch, bracts in about five pairs, imbricated, subequally 

 and shortly complicate-bilobed, with blunt, broad, subentire divis- 

 ions, margin of lobule often revolute ; bracteoles similar to the other 

 underleaves, usually entire : spores oblong, green, with a thick 

 whitish wall, minutely tuberculate. 



Stems 0.17""" in diameter, lobes of leaves 1.3.3 x O.Sr.™'", lobules 

 0.35x0.2™'", underleaves 0.45 x CSS""", cells at edge of lobe 13/a in 

 diameter, in the middle 21 x Mix, at the base 32 x \1fx, lobe of bract 

 1.1x0.55™'", lobule 0.5x0.2™™, bracteole 0.8x0.65'"™, perianth 

 1.9x0.85™™, capsule 0.5™'^^ in diameter, spores 30yu, in shortest diam- 

 eter. 



On rocks and trees. The type-specimens collected by Hillebrand. 

 Oahu : Konahuanui (Heller, Cooke) ; Nuuanu, Luakaha, Palolo 

 (Cooke); also collected by Andersson and by Didrichsen. Kauai : 

 Half Way Bridge (Cooke); also collected by Baldwin. 



