88 18. DAVALLIA, § HUMATA, 



sori 1 to 6, minute, axillary, the tube stalked, the motith truncate. T. longise- 

 tum, Bory, V.D.B. Hym. Jam. t, 21. 



Hab. Borneo, Java, Samoa, Bourbon. — A very singular plant, with the segments 

 spreading in all directions, and not at all flattened. 



78. T. fcmieulamim, Bory ; st. nearly tufted, erect, wiry, 2-4 in. 1., naked or 

 tomentose ; fr. 4-8 in. 1., lf-3 in. br., erect, rigid, ovate-lanceolate ; main rachis 

 naked or slightly winged above ; lower pinnm spreading or erecto-patent, 1-1^ 

 in. 1., cut down quite or very nearly to the rachis ; pinnl. regularly pinnatifid, 

 with simple or forked linear-filiform segm. 1-1| lin. 1., colour dark-green or 

 brownish-black when dry, 'texture subcoriaceous ; sori 2 to 12 to a pinna, minute, 

 axillary, tlie mouth rather spreading, but not two-lipped. — Hk. 8p. 1. p. 135. 

 (in part). T. parviflorum {Pair.) oldest name. 



Hab. Mauritius, Bourbon, Borneo, and Rockingham Bay, Australia (T. setildbum, 

 F. Mueller, MSS.). — Intermediate between rigidvm and longiseimn, the segments rather 

 flattened. 



Tribe 4. Davallie^. 



Sori marginal or ^marginal, roundish, covered hy a reniform or svhorKcular 

 squamiform involiicre, which, is open at the apex, fastened broadly at the base, and 

 open or free at the sides. Gen, 18-19. 



Gen, 18. Davallia, Smith, (See page 467.) 



Sori intra- or sub-marginal, globose or elongated either laterally or vertically. 

 Invol. terminal on the veins, various in shape, united or free at the sides, the apex 

 always free. Caps stalked. A large genus, which has its head-quarters in the 

 Tropics of the Old World. Fronds i>a/rious in size and division, herbaceoiis or 

 coriaceous ; veins always free ; rhizome usually wide- creeping and scaly. There 

 are four principal types in the shape of the involucre (see plate), of which 

 Microlepia connects Endavallia with Dioksonia and Odontoloma with Lindsaya. 

 Tab. II. f. 18. 



§ Humata, Cav. Invol. ample, coriaceous, siiborbicular or reniform, attached by a 

 broad base, the apeso and sides free. — Sp. 1-11. Fronds in all coriaceous, usually 

 deltoid, 3 Jo 6 inches long, more or less distinctly dimorphous, the barren ones hardly 

 more than once pinnutijid. All plants of the Malayan islands, one reaching the 

 Himalayas arid the Mauritius. Sp. 12 is an anomalous simply pinnate S. American 

 plant, which seems best placed here. 



* Barren fronds entire. Sp. 1-2. 



1. D. (Hum.) heterophylla. Smith ; rhinome wide-creeping, scaly ; fr. shortly 

 stalked, 3-6 in. 1., 1 in. br., glabrous ; texture coriaceous, the sterile one ovate- 

 lanceolate, entire or slightly lobed at the base, the fertile one narrower, deeply 

 sinuato-pinnatifid ; sori 2 to 10 to a lobe.— iffi. Sp, 1. p, 162. Fil. Ex, t. 27. 

 m. Sf Or. Ic. Fil. t. 230. 



Hab. Malayan Peninsula and Polynesiaan Islands. 



2. D. (Hum.) araywstoto, Wallich ; r^i^ome wide-creeping, scaly ; ^. subsessile 

 or shortly stalked, 3-8 in, L, i-| in. br., linear, slightly and irregularly crenate 

 at the margm, sometimes once forked ; texture coriaceous, both surfaces naked ; 

 sori in a row along the edges.— IT^. Sp. I. p. 152. Hh. S Gr, Ic. Fil. t, 231. 



Hab. Malayan Peninsula and Islands. 



