92 18. DAVALLIA, ODONTOLOMA. 



Hab. New Zealand. Allied to D.pulckra, 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. 1., 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. 



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. \.p. 160. HTc. & 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. 1. p. 158. t. 52. B. 



Hab. Neilgherries, Ceylon, Java, and Polynesian Islands, frequent. Lowest pinnules 

 often 2 in. 1., 1 in. br. Very like D. chcerophylla in texture and cutting, but much 

 larger. 



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

 below ; fr. 2-4 ft. L, broadly ovate, quadripinnate ; lower pinnae 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. 1. 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 Acro- 

 phorus of Presl. 



24. D. (Leucos.) trichomanoides, Hk. ; st. 6-9 in. 1., erect, strong ;fr. 9-18 in. L, 

 6-9 in. br., supra- decompound; pinnl. of the lower pinnse 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. Hk. 2nd 

 Cent. Ferns, t. 64. D. ferulacea, Moore. 



Hab. Fiji Islands ; gathered by Mr. Milne. 



Odontoloma. Invol. as in Leticostegia, 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 

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

 S. American and one Mauritian. 



