17 Cephalozia. 



Wright's discoveries, is unknown to me : it is possibly an Arachniopsis.} 



Some other genera, closely allied to Cephalozia, I have already dis- 

 cussed elsewhere. [Cf. Journ. Bot. 1876, 'On Anomoclada,' by E. S.] 

 One of these genera, Adelanthus Mitt., is well distinguished by its habit 

 of Plagiochila ; by its decurvo-secund and (usually) sharply toothed 

 leaves ; and by its half-inferior calyptra, strewn with sterile pistillidia ; 

 although the cladogenous perichaetia and the 3 — 5-angled perianth — 

 with the third angle postical, whenever the angles are reduced to three — 

 prove its affinity to Cephalozia, especially to the subgenus Odontoschisma. 

 Anomoclada has exactly the cladogenous trigonous perianth, and the 

 male amenta of Cephalozia, but differs from that and most other genera 

 of Jungermanide83 in having all the leafy and flowering branches antical, 

 i.e. springing from the upper face of the stem,'^ 



I now proceed to the technical description of the entire genus, its 

 subgenera, and all the species of which I possess adequate examples. 

 A brief indication of their known geographical distribution will be found 

 under each subgenus and species. Any more definite statistical detail 

 is hardly possible until a more thorough search shall have been made in 

 all tropic lands. Whilst absolutely absent from no regions except the 

 extreme alpine and arctic, Cep)halozi(B are by far the most abundant in 

 species, and especially in individuals, in the north temperate zone ; yet, 

 even there, the minute size of many of the species renders them all but 

 invisible even to expert eyes. In equatorial America, with only two excep- 

 tions, they are exceedingly rare and sporadical; and, singularly enough, 

 they are fewer and scarcer in the Andes than in the hot, damp forests 

 of the Amazon, where their chosen habitat is on the decaying trunks, 

 twigs, and even pods, of fallen trees ; and on vegetable deposits by 

 streams running in deep shade. But they are very far from being so 



*I seize this opportunity to describe the male inflorescence of Anomoclada — un- 

 known at the time of my first published account of the plant, but since detected on 

 specimens from the upper Eio Negro, in Venezuela. 



Anomoclada mucosa Spruce in Journal Bot. 1876. PlantcB niasciilce cum fasmineis 

 mixtaa, tenuiores, paucirameas. Amenta antica — ^interdum duo vel plura eodem ramo 

 insidentia — folio proximo breviora, tenuia albida incurva. Bractese 8-jugae vel pau- 

 ciores, foliis 4-plo breviores, tenerrimse, suborbiculatse, concavse, lateribus incurvis, 

 apice bilobsB, interdum quadrilobffi. Antheridia solitaria magna brevistipitata. 

 Bracteolce ovatfe, apice bidentatse, supremse eubrotundse bracteis vix minores. 



