ES under the genera Lygodium, Anemia, and Schizwa. 
350 CHARACTERS OF TRIBES AND GENERA. 
spike, having a line of connate sori on both its margins, 
and also in the venation being reticulated, being the only 
instance of such in this extensive family. 
Sp. H. diversifrons, Bory. (v v.). 
A native of Guiana, parts of Tropical America, and 
Trinidad. 
C. Ring of Sporangia horizontal, apical, in some incomplete 
or rudimentary only. 
Tribe 26.—SCHIZZEZE (Plate 26). 
(Schizeacee, Kaulf.) 
Sporangia produced on contracted racemes or panicles, or 
on marginal lobules or spikelets, oval or oblong, rarely 
globose, apex striated, annulatiform, opening lengthways, 
vertical. 
Oss.—The oval sporangia, furnished with a striated 
apex, analogous to a transverse ring, readily distinguishes 
Schizeacem from thetwo preceding divisions (A. and B.). 
They were originally comprehended under Osmundacem, 
and to judge by the structure of their sporangia, the slight 
difference scarcely warrants their separation ; but as they 
. differ much in habit, it is deemed most natural to view 
them as separate tribes. 
In the “Synopsis” sixty species are enumerated, widely 
. . dispersed over the Old and New World, extending to New — SS 
Zealand in the south, and to lat. 40° in the North (New ` ` 
Jersey). With few exceptions the species are contained S 
