260 



Sori submarginal, solitary and terminal on the veins or uniting the 

 apices of 2 or more veins or veinlets, roundish, oblong or linear. Indusium ± 

 of the same shape as the sorus, attached at its inner side, opening outvFardly. 



Rhizome short or creeping. Stipes not articulate to the rhizome. Fronds 

 at least simply pinnate. Leaflets dimidiate, i. e. the half on the lower side 

 almost or quite undeveloped, the » midrib" therefore running along the lower 

 margin, which is always destitute of sori; veins free or anastomosing. Hk. 

 Bk., Syn. Fil., tab. II, fig. 20, a; Diels, in Engl. & Prantl, Nat. Pfl.Fam., I*, 

 fig. 119, D, E, G, H; Christ, Farnkr. d. Erde, fig. 926—928. 



Tropical and subtropical. 



Arrangement of the sections. 



§ 1. ODONTOLOMA. Sori solitary on the vein tips, but sometimes contiguous 

 and with a tendency to become confluent. Christ, 1. c. 



§ 2. EULINDSAYA. Sori uniting the apices of 2 or more veins or veinlets. 

 Veins free. Hk. Bk. & Diels, 1. c. 



§3. SYNAPHLEBIUM. Sori as in § 2. Veins anastomosing. 



§ 1.. ODONTOLOMA. 



Fronds not branched, i.e. pinnate or 2-pinnatifid.. 



h. Leaflets [pinnae) entire or crenate. (1) L. repens. 



b.b. Leaflets (pinnae) coarsely toothed or lobed. 

 c. Fronds to i^j^ c.M. broad. 



%. Leaflets toothed or lobed with % — 4 teeth or lobes. 



(2) L. gracilis. 

 *.:t:. Leaflets %fid. (3) L. blanda. 



c.c. Fronds more than f '/a '^•^- broad. 



a. Fronds sessile. (4) L. delicatula. 



«i.«l. Fronds stalked, the stipes ± 2 — 20 c.M. long. 

 e. Fronds rather short, under 35 c.M. long. 



f. Leaflets shallowly lobed. (5o) L. adiantoideS. 



(56) L. Havicei. 



