INTRODUCTION TO CRTPTOGAMIC BOTANY. 505 



has a wide range both in the Old and New "World, but does 

 not extend north of Florida. In R. mnioides, the sporangia 

 are not positively basal. This species also extends to New 

 Grenada from Cape Horn, from whence it has a lateral dis- 

 tribution. Miiller asserts that the peristome of Hymenodon 

 is internal, or in other words that it arises from the spore-sac, 

 and not from the inner wall of the sporangium ; but this is 

 not confirmed in the Flora of New Zealand.* Miiller has pro- 

 posed in the same place a new genus, Rhizopelma, founded on 

 LesJcea Novae Hollandiw, but he had seen only barren spe- 

 cimens. Montague's distinction of barren and sterile shoots, 

 and of the frondose nature of the former, is not borne out by 

 examination, though there is some analogy between these 

 plants and Brepanophyllei. 



1 1. Phyllogoniei, Mont. 



Leaves distichous, equitant, lineari-areolate ; sporangium 

 suberect, equal ; calyptra submitriform ; peristome simple. 



565. We have here distinct analogues oi Bepranophyllei, of 

 an equally elegant form, and glittering like gold when dry. The 

 shoots are flat, the leaves rhomboidal and distichous ; some- 

 times nerveless, sometimes nerved but equitant. The peduncle 

 is about as long as the fruit ; the columella large ; and the 

 peristome single, consisting of sixteen broad almost mem- 

 branous teeth. The calyptra completely covers the sporan- 

 gium, and is multifid at the base, and slightly pilose. They 

 are mosses of warm countries, and natives for the most part 

 of the tropics. 



12. Htpopteeygei, Mont. 



Leaves trifarious, the third row smaller than the others, and 

 resembling amphigastra. Fruit mostly lateral beneath the 

 proper leaves, sometimes axillary. Calyptra conical. 



566. In this most curious tribe we have a third row of leaves, 

 smaller, and of a different form from the other (Fig. 99, 109), 

 resembling the amphigastra, which we have seen so commonly 

 in JungermannicB. Hypopterygium and Cyathophorum are 

 the oldest genera of the tribe ; but to these two genera, Lopiv 



* Bot. Zeit. 1847, p. 802. 



