CHAEACTEES OF TEIBES AND GENEEA. 



2G9 



150.— Odontoloma, J. Sm. (1841). 

 'Davallla and Lindscea, sp. auct. ; Hook. Sp. FU. 



Vernation uniserial, sarmentose, epiphytal. Fronds slender, 

 1 to 2 feet higli, 1 to 2 pinnate ; pinnaa ajcd pinnules oblong-, 

 dimediate, the upper margin entire, dentate or incise lobed. 

 CostcE eccentric. Veins unilateral ; vennules direct, free. 

 Beceptacles terminal, pmictiform. Sori round. Indvsmm 

 snb-reniform, plane, its sides free, shorter than the sub- 

 indusasform margin. 



Type. Dicisonia repens, Bory. 



Illust. Hook, and Bauer, Gen. Fil., t. 114, B. ; Hook, 

 and Grev., Ic. Fil., t. 143. 



Obs. — Odontoloma having punctiform marginal sori 

 similar to that of Davallia, has led the species to be placed 

 by most authors in that genus, but the eccentric costa 

 clearly shoivs its afifinity to be with Lindscea, with which it 

 also agrees in habit, only separated by the sori being 

 punctiform, not linear and continuous as in true Lindscea. 



The genus consists of about half a dozen known species, 

 they are widely distributed in or near the tropics, being 

 represented in Guiana, the Mauritius, Malayan, Fiji, Sand- 

 wich, Philippine, and Polynesian Islands. 



Sp. O. pulchella, /. Sm. ; O. repens (Siv.) ; O. Macrse- 

 ana (iTooi. and Arn.) (0. Mooheri,J. Sm., 1841) ; 0. Parkeri 

 {Hooh.) ; 0. fijiensis, J. 8m., in Seemann's list of Figi 

 Plants ; 0. tcnuifolia {Bl.) ; 0. hymenophylloides {Bl.) ; 

 0. triquetra (BL). 



Obs. — Odontoloma repens afibrds a good example of the 

 different views entertained by Pteridologists in defining 

 the technical character of genera on the sori alone ; this 

 species is epiphytal, having a slender sarmentum and linear 

 pinnate fronds, a foot or more in length, with dimediate 



