92 18. DAVALLIA, §^§ ODONTOLOIIA. 



Hab. New Zealand. — Allied to D. fuliilim, but much larger in size, -with broader 

 more divided segments. 



20. D. (Leucos.) chcerophi/lla, Wallich ; rhizome wide-creeping, clothed with 

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

 lanceolate-deltoid, tri- or quadripinnatifid ; lowest pinnl. 1-2 in. 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. ISp. 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, Cejlon, Malayan Peninsulj*. 



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

 or fr. subsessile, |-| 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.— ^y(:. iip. 1. p. IGO. 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. 1,, 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, i?/M?»e, 

 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 /»mwcB 12-18 in. 1., 6-9 

 in. br, ; lower pinnl. lanceolate, 4-6 in. 1., 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. 1. p. 157. Kew Gard. Misc. 9. t. \0. Acrophorus, Pre^^. 



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 

 A cropliorus of Presl. 



24. D. (Leucos.) ferulacea, Moore ; st. 6-9 in. h, 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. Milnsi 



§§§ Odontoloma. Invol. as in Leucostegia, hut mth a tendency to become confluent, 

 and the pitmules pellucido-he)'baceous in texture and dimidiate {resembling a quarter 

 of a circle) in shape. Sp. 25-.30. A small 7iatural group very near the dimidiate 

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

 S. American, and one Mauritian, 



