270 



FERNS : BRITISH AND FOREIGN. 



154. KAULFUSSIA, Blume. 



Vernation uniserial, contiguous, decumbent; sarmentura 

 thick, fleshy ; each frond rising from between two short, fleshy, 

 stipulaeform appendages. Fronds broad, pinnately -trifoliate, with 



the two lower pinnae sometimes 

 bipartite, 1-2 feet high, long, 

 stipate, pale underneath, and 

 furnished with numerous con- 

 cave dots. Veins costseform, 

 parallel ; venules compound ana- 

 stomosing, with free veinlets 

 terminating within the areoles. 

 Synangia sessile, compital, super- 

 ficial, distant, orbicular, concave- 

 hemispherical, each consisting of 

 10-20 sporangia, laterally con- 

 nate in a circular series, and 



Genus 154. Portion of fertile frond, . , ,.. ., . . . . 



slightly enlarged. No. i. opening by a slit on their interior 



side. 



1. K. sesculifolia, Btume ; Hook, et Grev. Ic. Fil t. 229 ; 



Hook. Gen. Fil. t. 59 A. Java and Philippine 

 Islands. 



Flowerless plants consisting of straight evolved fronds, which 

 produce from their disk or base a rachiform, simple or com- 

 pound paniculate spike, of unilocular, sessile, connate, homo- 

 geneous cases (sporangia), opening by a vertical slit in two 

 valves, containing reproducing spores. 



155. OPHIOGLOSSUM, Linn. 



Fronds erect or pendulous, with dissimilar fertile and sterile 

 segments, or rarely the whole frond rachiform. Sterile frond or 

 segments foliaceous, simple, entire, palmately lobed or dicho- 

 tomously branched. Veins reticulated. Fertile segments spike- 

 like, simple or rarely forked. Sporangia connate, in two rows, 



