1 96 TEENS : BEITISH Ain) FOEEIGN. 



tifid. Veins costseform, pinnate ; venules anastomosing, forming 

 irregular hexagonoid areoles. Sporangia produced on the 

 apices of 4—5 venules, converging in the sinus of the lacmiae, 

 forming an arcnate soras in each sinus. IndMsiv/m linear, 

 lunulate. 



1. L. Xiindemana, Book. 8p. Ml. 2, t. 89 A. — ^Tropical 



America. 



2. L. pubescens, Willd. ; Booh. Gen. Fil. t. 68 A. — 



Mauritius. 



Tkibe VIIL— BLECHNS-aH. 



Sori intramarginal, medial or costal, transverse oblong linear, 

 continuous or interrupted. IndMsium lateral, linear, exteriorly 

 attached, plane or vaulted, rarely oLsolete. Fronds uniform, or 

 the fertile contracted. 



100. BLECHNUM, Linn. ; Presl. 



Vernation fasciculate, erect, oaudioiform or oaaspitose. 

 Fronds simple, pinnatifid or pinnate, from a few inches to 4-6 

 feet high ; pinnae adherent or articulated with the rachis. "Veins 

 forked ; the sterile venules free, or their apices thickened and 

 forming a cartilaginous margin ; thefertUe veins combined near 

 their base by a transverse, continuous, sporangiferous receptacle, 

 constituting a linear, costal, or rarely extra-postal sonis. tndu- 

 siwm linear, plane. 



* Apices of the venules free, 

 f Sori costal. (Blechnum, Presl.) 



1. B. Lanceola, Sw. ; Lodd. Oah. (1592) ; Book. Bot. Mag. 



t. 3240 ; Eimze, Fil. t. 57,/. 1 ; Book. Ic. PI. t. 970. 

 B. lanceolatum, Badd. Fil, Bras. t. 60, /. 3. B. tri- 

 foUatum, Kaulf. — ^Brazil. 



2. B. pdlypodioides, Badd. Fil. Bras. t. 60, /. 2; Kunze, 



Fil. t. 58, /. 1 ; Lowe's Ferns, 4, i. 34. — Brazil. 



