OFS 
ov2 PRIGONANTHELE. 
vel ciliato, raro laciniato. Marsupium Aantiw, “ perianthium ” 
sistens, pendulum, subcylindricum carnosum, radicellis  villosum. 
Calyptra plerumque, parva, pyriformis, seepe carnosula, in plurimis 
perfecte libera et supera, in paucis dimidio inferiore receptaculo 
(cum suis pistillidiis) adnata; in Kania cum marsupio alte concreta, 
ipso apice pistillidia sterilia gerens. Capsula in pedicello breviusculo 
vel elongato, sat magna, vix unquam subglobosa, pro more oblonga 
vel subeylindriea, ad basin usque 4-valvis ; valvule rectee-—solum in 
Kantia contorte—bistrate, in Lepidozia tamen et Bazzania 
4-5-strate ; cellule strati intimi semper fere fibris semiannularibus 
fulcite. Huteres. tenues dispiri. Spore minute globose sepius 
asperule. Andracia in plerisque specicbus amentulis hypogenis 
tenuibus constantia; in aliis autem ad ramos, raro ad caulem, 
spicam apicalem, mediam vel basalem sistentia, bracteis foliis norma- 
libus consecutivis. Antheridia normaliter solitaria, solum in 
plerisque Bazzaniis binata. 
This subtribe is, with very rare exceptions, well distinguished from the 
two preceding ones by the @ flowers being hypogenous, or postical, 
usually on a branch shortened down to the floral envelopes alone. Of 
genera already described, Porella, Lepicolea, &c., have the flowering 
branches similarly abbreviated, but laterally—not postically—inserted 
on the stem. The few aberrant species of Trigonanthee with lateral 
(pleurogenous) or acrogenous @ flowers belong mainly to the genus 
Cephalozia. 
Not only are the 2 branches mostly postical, but normally-leafy 
branches having the same origin exist in nearly every genus ; and in 
some genera all the branches—leafy, floriterous, and radicelliferous—are 
solely postical, e.g., in Kantia, Arachniopsis, Adelanthus, and in most 
Cephalozie. The unique feature of antical leafy and flowering branches, 
combined with postical rooting branches, and the entire absence of lateral 
branches, characterises the curious genus Anomoclada, whose inflorescence 
and fruit are almost exactly those of Cephalozia. 
The ¢ organs, in most Trigonanthew relegated to minute postical 
catkins, are less constant than the 9 to that position. Even in genera 
where the @ flowers are invariably postical, the ¢ flowers may form a 
spike terminating a lateral branch, as in certain Lepidoxie, especially the 
minuter species; or the androcium may be basal, medial or terminal on 
a branch, or even on the main stem, the bracts being consecutive with 
leaves of normal form, which is to be noted in several Cephalozee. 
The trigonous perianth (with the third angle on the underside), usually 
so constricted upwards as to end in a narrow pyramid, prevails nearly 
throughout the Trigonanthee. A fourth angle is added on in Mytilopsis, 
and occasionally in certain Bazzanie. In a few Cephalozielle supple- 
mentary angles make the perianth 3-6-angled, the number of angles 
varying often in one and the same species.* 
See, for a fuller account of the morphology of the perianth in Trigonanthew, 
the memoir ‘On Cephalozia,’ above-cited. 
