18. DAVALLIA, ODONTOLOMA. 93 



* Fronds not branched. Sp. 25-27. 



25. D. (Odont.) hymenophylloides, Baker ; rhizome wide-creeping, slender, scan- 

 dent, paleaceous \fr. subsessile, simply pinnate, 4-6 in. 1., about f in. br. ; pinnae 

 1^-2 lin. deep, cut down into narrow simple or forked linear segments to a nearly 

 straight rachis ; texture thinly herbaceous, both surfaces naked ; sori subrotund. 

 Lindssea, Blume, Enum. Fil. Jav. p. 218. 



Hab. Java. This agrees with 0. triquetra, except that the main rachis is not 

 branched. 



26. D. (Odont.) pulchetta, Hk. ; rhizome slender, wide-creeping, and much 

 branched ; st. slender, wiry, erect, naked, 2-3 in. 1. ; fr. 4-12 in. 1., \ -f in. br. ; 

 pinnce slightly stalked, about |- in. across, ^ in. deep, the lower margin more 

 or less curved upwards, oblique at the base, the upper cut into 2 to 4 blunt 

 lobes ; texture herbaceous, rachis and both surfaces naked ; sori small, placed 

 in the lobes at a short distance from the edge ; veins sometimes anastomosing 

 at the apex, and then their sori become confluent. Hk. Sp. 1. p. 177. t. 548, 

 Synaphlebium Pickeringii, Brack, p. 223. t. 50. 



Hab. Philippine Islands, Fiji, and Samoa. The original Philippine 0. pulchella quite 

 corresponds with Dr. Seemann's smaller specimens of the Feejean plant. 



27. D. (Odont.) repens, Desv. ; rhizome wide-creeping, paleaceous, climbing ; 

 fr. simply pinnate, 8-18 in. 1., ^-1^ in. br. ; pinnce %-% in. 1., about half as broad 



as deep, the lower line slightly curved, oblique at the base, the upper rounded, 

 nearly entire or crenately lobed ; texture pellucido-herbaceous ; sori marginal, 

 large, about as broad as deep, often confluent in the not crenated form. D. 

 Boryana, Presl, HJc. Sp. I. p. 175. D. hemiptera, Bory, Hk. Sp. 1. p. 176. 



Hab. Assam, Neilgherries, Ceylon, Java, Sumatra, Polynesian Islands, and Mauritius. 

 Very variable in size. Quite doubtful between Odontoloma and Lindsay a, and perhaps 

 not distinct from L. oblongifolia. 



** Fronds more or less branched. Sp. 28-30. 



28. D. (Odont.) Parkeri, Hk. ; rhizome slender, creeping ; st. flexuose, wiry, 

 naked, 2-6 in. 1. ; fr. simple or branched, with one or two pairs of lateral pinnae ; 

 the main fr. 4-6 in. L, about f in. br. ; pinnl. a quarter of a circle, about f in. 

 br., J in. deep, the outer edge slightly crenate ; texture herbaceous, both surfaces 

 naked ; sori small, submarginal ; invol. rather broader than deep. Hk. Sp. 1. p. 

 176. t. 53. 



Hab. British Guiana. Like 0. pulchella, but the rachis branched. 



29. D. (Odont.) triquetra, Baker ; rhizome creeping, fibrillose ; st. strong, erect, 

 4-6 in. 1. ;fr. with 2 to 7 pairs of pinnae and a terminal one ; lateral pinnce spread- 

 ing with subrigid rachises, 3-4 in. 1., ^-f in. br. ; pinnl. cut down on the upper 

 side into narrow simple or forked linear segments to a nearly straight flattened 

 leafy rachis ; texture pellucido-herbaceous, both surfaces naked ; sori small, 

 terminal on the segments ; invol. suborbicular. Lindsaya triquetra, Metten. 

 O. tenuifolia, Brack, non J. Sm. 



Hab. Java, Zollinger, 3714. Gathered in Samoa by the American Expedition under 

 Captain Wilkes ; and beautiful specimens have recently been forwarded from the same 

 group by the Rev. T. Powell. 



30. D. (Odont.) Blumeana, Hk. ; rhizome creeping ; st. strong, erect, 4-6 in. 1. 5 

 fr. 8-12 in. 1., 6-8 in. br., bipinnate ; pinnce rigid, erecto-patent, 4-6 in. L, in. 



