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20. L1]VI>SAYA., JDryander. 



Son submargiual, 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 outwardly . 



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

 at least simply pinnate. Leaflets dimidiate, i. e. the half on the lovv^er 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., l\ 

 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 tendence to become confluent. Christ, 1. c. 



§ 2. EULIND3AYA. Sori uniting the apices of 2 or more veins or veinlets. 

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



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



§ 1. ODONTOLOMA. 



a. Fronds not branched, i.e. pinnate or 2-pinnafifid.. 



h. Leaflets {pinnae) entire or crenate. . (1) 1"- repens. 



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

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



:^. Leaflets toothed or lobed with 2 — 4 teeth or lobes. 



(2) L. gracilis, 

 ;tc.^. Leaflets 2-fid. (3) L. blanda. 



c.c. Fronds more than d^j^ c.M. broad. 



d. Fronds sessile. ('^) L. delicatula. 



d.d. Fronds stalked, the stipes ± 2 — 20 c.M. long. 

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



f. Leaflets shallowly lobed. (8a) L. adiantoides. 



(56) L. Havicei. 



