18. DAVALLIA, HUMATA 89 



** Barren fronds pinnatifid. Sp. 3-11. 



3. D. (Hum.) parallel^ Wallich ; rhizome creeping, scaly ; St. 2-4 in. 1., .greet, 

 more or less scaly ; fr. 4-8 in. 1., 1^-2 in. br., ovate-lanceolate, cut down nearly 

 or quite to the rachis into long parallel linear-oblong entire bluntish or acute 

 lobes, the lowest pair sometimes auricled ; texture coriaceous ; sori oblique, in 

 two rows in the lobes, occupying the greater part of the space between the costa 

 and margin. Hk. Sp. 1. p. 153. t. 42. A. Pteroneuron, Fee. 



Hab. Malayan Peninsula and Polynesian Islands. Habit and size of Polypodium 

 vulgare. Rachis sometimes densely scaly. 



4. D. (Hum.) pectinata, Smith ; rhizome creeping, scaly ; st. 2-4 in. 1., erect, 

 more or less scaly ; fr. 4-8 in. 1., 2-3 in. br., ovate-lanceolate, cut down nearly or 

 quite to the main rachis into long parallel linear-oblong, entire or inciso- 

 pinnatifid pinnce, the lowest pair deeply pinnatifid on the lower side, with lobes 

 sometimes \ in. 1. ; texture coriaceous ; 'sori obliquely placed in two submarginal 

 rows. Hk. Sp. 1. p. 153. Hk. <& Gr. Ic. Fil. t. 139. 



Hab. Tropical Polynesian Islands. Quite similar to the preceding in size and 

 texture. 



5. D. (Hum.) sessilifolia, Blume ; rhizome very long, wide-creeping, densely 

 clothed with rigid filiform scales ; fr. subsessile, 2-4 in. 1., 1-1^ in. br., ovate- 

 lanceolate, cut down nearly to the rachis into parallel linear-oblong, entire or 

 sinuated lobes, the lower side of the lower one sometimes deeply pinnatifid ; 

 texture subcoriaceous ; sori in two rows in the lobes, occupying the greater 

 part of the space between the costa and margin. Hk. Sp. 1. p. 154. /3, H. 

 polypodioides, Brack, t. 32; fr. stalked (st. 1-2 in. 1.), rather larger and more 

 acute. 



Hab. Java, Celebes, and Fiji Islands. Examples gathered by Milne in Fiji quite 

 connect the plant figured by Brackenridge with Blume's specimens. 



6. D. (Hum.) pedata, Smith ; rhizome wide-creeping, scaly ; st. 2-4 in. L, 

 rather scaly ; fr. 2-4 in. 1., 1^-2 in. br. at the base, deltoid in general outline, cut 

 down nearly to the rachis ; upper segm. linear-oblong, acute, erecto-patent, 

 inciso-dentate, the lower pair broader, deeply inciso-pinnatifid, especially on the 

 lower side ; texture coriaceous ; sori placed in rows on the teeth on both sides of 

 the lobes. Hk. Sp.l.p. 54. t. 45. A. Gard. Ferns, t. 7. 



Hab. Hindostan, from 2,000 ft. in Khasia southward to Ceylon, Hongkong, Malayan 

 Peninsula, Java, Borneo, Queensland, Mascaren Isles. 



7. D. (Hum.) alpina, Blume ; rhizome creeping, scaly ; st. 2-4 in. 1. ; fr. 2-3 

 in.l., 1-1^ in.br., deltoid in general outline, upper segments of barren frond slightly 

 dentate, blunt at the apex of the fertile frond, distant, deeply and sharply 

 toothed, the lower ones cut nearly to the rachis with sharply-toothed lobes ; 

 texture coriaceous, lower part of rachis winged narrowly ; sori placed in the teeth 

 on both sides. Hk. Sp. 1. p. 154. D. Belangeri, Boiy. H. serrata, Brack. 



Hab. Mergui and Ledong, Java, Borneo, and Polynesian Islands. Very near 

 7). pedata, but smaller and rather more deeply cut. We have not seen the Javanese 

 D. longula, Kunze (Bot. Zeit. 1848, p. 215), which is said to be very closely allied 

 to this. 



8. D. (Hum.) j^mTfo, Metten. ; rhizome creeping, scaly ; st. 1 in. or less 1. ; fr. 

 \-\\ in. 1., i-f in. br., cordato-deltoid in outline, cut down to a narrowly-winged 

 rachis ; upper segm. linear-oblong, cuneate at the base, deeply inciso-dentate, 

 lower pair broader, deeply inciso-pinnatifid on the lower side, teeth very acute ; 



M 



