92 18. DAVALLIA, ] ODONTOLOMA. 



Hab. New Zealand. Allied to D. pulchra, but much larger in size, with broader 

 more divided segments. 



20. D. (Leucos.) chcerophylla, Wallich ; rhizome wide-creeping, clothed with 

 broad obtuse adpressed scales ; st. 4-6 in. L, naked ; fr. 9-15 in. 1., 4-8 in. br., 

 lanceolate-deltoid, tri- or quadripinnatifid ; lowest pinnl. 1-2 in. 1., 1 in. br., cut 

 down to a narrowly-winged rachis into deeply pinnatifid segm., ultimate lobes 

 narrow and acute in the fertile, rather broader in the barren frond ; texture 

 thinly herbaceous, rather flaccid ; sori copious, placed at the base of the teeth of 

 the segments, which they about equal in breadth. Hk. Sp. Fil. 1. p. 157. t. 51. A. 

 Cystopteris squamata, Dec., Hk. Sp. Fil. 1. p. 201. D. pulchra, D. Don, oldest 

 name. 



Hab. North of India, ascending in the Himalayas to 9-10,000 ft., Cashmere, Neil- 

 gherries, Ceylon, Malayan Peninsula. 



21. D. (Leucos.) parvula, Wallich ; rhizome wide-creeping, scaly ; st. 1-2 in 1., 

 or fr. subsessile, -f in. 1. by in. br., deltoid in outline, bi- or tripinnate, with 

 all the divisions of the frond almost filiform and the ultimate segm. sharp at the 

 point ; texture coriaceous ; sori placed at the sinuses of the ultimate forks ; invol. 

 broader than the segments. Hk. Sp. 1. p. 160. Hk. & Gr. Ic. Fil. 138. 



Hab. Singapore and Borneo. Placed by Mettenius in Humata, with which it quite 

 agrees in habit. 



22. D. (Leucos.) affinis, Hk. ; rhizome thick, densely clothed with sharp- 

 pointed ferruginous scales ; st. 4-9 in. 1., erect, strong ; fr. 12-24 in. L, 6-12 in. 

 br., deltoid-lanceolate, tri- or quadripinnate ; lower pinnl. with oblong rhom- 

 boidal lobes, the segm. of which are deeply and finely inciso-pinnatifid with 

 sharp teeth ; texture herbaceous ; sori 2 to 6 to a segment, small, placed at the 

 base of the teeth. Hk. Sp. I. p. 158. t. 52. B. D. hymenophylloides, Blume, 

 oldest name. 



Hab. Neilgherries, Ceylon, Java, East Himalayas, and Polynesia. Lowest pinnules 

 often 2 in. 1., 1 in. br. Probably a variety of pulchra. 



23. D. (Leucos.) nodosa, Hk. ; fr. tufted ; st. 12-24 in. 1., strong, erect, scaly 

 below ; fr. 2-4 ft. 1., broadly ovate, quadripinnate ; lower pinnce 12-18 in. 1., 6-9 

 in. br. ; lower pinnl. lanceolate, 4-6 in. L, 2 in. br., the segm. cut down to the- 

 rachis with distant, small, rather bluntly-toothed oblong-deltoid lobes ; texture 

 herbaceous ; sori small, 1 to 4 to a lobe, placed between the costa and margin. 

 Hk. Sp. I. p. 157. Kew Gard. Misc. 9. t. 10. Acrophorus, Presl. 



Hab. North Hindostan, ascending in Sikkim to 7-10,000 ft., Malayan Peninsula, 

 Java. Fronds like those of an Alsophila, but habit not arborescent. It is the original 

 Acrophorus of Presl. 



24. D. (Leucos.) ferulacea, Moore ; st. 6-9 in. 1., erect, strong ; fr. 9-18 in. 1., 

 6-9 in. br., supra-decompound ; pinnl. of the lower pinnae 2-3 in. 1., 1 in. br., 

 deltoid, their segments cut down to the rachis, and the lobes again cut down into 

 linear-filiform ultimate divisions about lin. 1. ; texture thinly herbaceous ; sori 

 placed at the dilated apices of the ultimate divisions ; invol. oblong. D. tricho- 

 manoides, Hk. 2nd Cent. Ferns, t. 64, non Blume, 



Hab. Fiji Islands ; gathered by Mr. Milne. 



Odpntoloma. Invol. as in Leucostegia, but with a tendency to become confluent, 

 and the pinnules pellucido-herbaceous in texture and dimidiate (resembling a quarter 

 of a circle) in shape. Sp.. 25-30. A small natural group very near the dimidiate 

 Lindsaya. All but one are inhabitants of S. E. Asia and Polynesia, one being 

 8. American, and one Mauritian. 



