DAVALLIA. 467 



XVIII. DAVALLIA. Page 88 103. 



4*. D. cemula, Mett. ; rhizome elongated ; scales adpressed, oblong-cuspidate ; st. 

 l|-2 in., winged above ; fr. 5 in. 1., deltoid, bipinnatifid ; lower pinnae largest, 

 produced on under side with oblong obtuse toothed pinnl. ; rachis winged 

 throughout ; texture thin ; surfaces pale-green, glabrous ; veins slender, not 

 dilated at tip, of barren fr. forked or subpinnate, of fertile simple ; sori at 

 base of crenations on upper side ; inv. transverse, oblong, with sides slightly 

 adnate. Kuhn, Linn. 36. p. 144. 



Hab. Aneiteum, Macgillivray, 64. 



9*. D. Andersoni, Mett. ; rhizome wide-creeping ; scales rigid, lanceolate-acu- 

 minate, dark-brown, with a pale edge ; st, 1-3 in., like rachis laxly scaly ; fr. 

 deltoid, J|-3 in., tripinnatifid ; lower pinnae largest, short-stalked, with sharply- 

 toothed pinnatifid cTneate-oblong lower pinnl. ; veins thick, immersed; sori at 

 base of ultimate sinuses inv. transversely hemispherical, with free sides, usually 

 overtopped by a tooth. Kuhn, Linn. 36. p. 143. 



Hab. Tahiti, Anderson. 



9*. D. Tyermanni, Baker ; rhizome wide-creeping, clothed with dense adpressed 

 linear white scales ; st. 2-3 in., naked, reddish ; fr. 4-6 in. 1., deltoid, 3-4-pin- 

 natifid ; rachis winged in upper third only ; lower pinnae largest, stalked, deltoid, 

 unequal-sided, ! in. br. ; lowest pinnl. stalked, cuneate-oblong or deltoid, with 

 falcate-deltoid entire upper and cuneate-oblong pinnatifid lower segm. ; texture 

 subcoriaceous ; colour bright-green ; surfaces naked ; sori at base of ult. lobes, 

 I lin. br. ; inv. hemispherical, free at the sides. Humata Tyerrnanni, Moore, 

 Gard. Chron. 1871, p. 870. 1. 178. 



Hab. Cultivated at Liverpool by Mr, Tyerrnan ; supposed to be from West Tropical 

 Africa. 



11*. Carruthers, in Fl. Vitiensis, p. 335, adopts three species : 1. botrychioides 

 (Brack, t. 33. fig. 1. Viti) ; fr completely dimorphous ; pinnl. broader, blunter, 

 lowest only pinnatifid ; sori larger, reniform, occupying the whole of the lobes. 



2. multifida, (Viti, Aneiteum, Samoa) ,fr. larger, more compound, with all pinnl. 

 of lower half deeply pinnatifid ; sori smaller, with a horn projecting beyond them. 



3. rigida (Soland, Society Isles) ; fr. smaller, barren, copiously pinnatifid, with 

 sharply inciso-dentate lobes ; sori small, with a horn projecting beyond. 



14*. D. mscidula, Mett. ; fr. broad-ovate, quadripinnatifid, 1 ft. 1. ; rachis 

 reddish, glandulose-pubescent ; pinnce sessile, oblong-lanceolate, acuminate, 

 7 in. 1. ; pinnl. close, rhomboid-oblong, confluent at base ; segm. oblong obtuse, 

 with ovate subfalcate acute lobes ; texture membranous ; surfaces glandulose- 

 pubescent, reddish-olive when dried ; veins simple or forked in ultimate lobes ; 

 sori overtopped by a horn ; inv. ovate acute, obscurely ciliated. Kuhn, Linn. 

 36.;?. 145. 



Hab. Java, Blume. 



14*. D. assamica, Baker ; rhizome stout, wide-creeping, densely clothed with 

 large lanceolate-acuminate silvery-brown scales ; st. 1-3 in., naked, stramineous ; 

 fr. G-12 in. 1., lanceolate, tripinnatifid ; pinnce crowded, lanceolate, short-stalked, 

 patent, the lowest largest, all the rest cuneate-truncate at base on lower side ; 

 pinnl. crowded, lower oblong, unequal- sided, pinnatifid, upper lanceolate-falcate, 

 entire ; texture subcoriaceous ; surfaces naked ; rachis winged in upper half ; 

 vcnules immersed, erecto-patent, simple or forked ; sori submarginal in ultimate 



