HYMENOPHYLLACEAE 



575 



HYMENOPHYLLACEAE. 



This family includes only the two genera, Hymenophyllum and Tricho- 

 manes, but each is represented by a large number of species, distributed 



FIG. 322. 



Habit of Hymenophyllum. A = H. cruentunt, Cav. B = H. dilatatutn, Sw. C = //. 

 australt, Willd. (After Sadebeck, from Engler and PrantI, Nat. P^fanzen/am.) _. fl ;jM .* * 



chiefly in moist and shaded spots throughout the tropics : they extend 

 as stragglers northwards, though more freely to the south, and there is 

 a special centre of their distribution in New Zealand. 



