392 CEPHALOZIA. [zoopsis, 
sione mutua angulatee) postice biseriate anguste rectangulari- 
oblong, axiales uniseriate tenuissimee chlorophyllose subopace. 
Rami omnes caulis facie postica orti, alii flagellares radicellosi 
subaphylh. 
Folia cellulis caulis binis dissita, distiche patentia, insertione exacte 
longitudinalia, cellulis solum 2, suprapositis (rarissime 1 vel 3) con- 
stantia; cellule pellucide parce chlorophyllose, inferior magna 
truncato-conica, superior 4plo minor incurva unguiformis, basi 
constricta. 
Flores monoici: @ postici (ramulo brevissimo constantes). Bractez 
1-2-juge 3-stichee, perianthio subtriplo breviores, liberee connateve, 
profunde bipartite, sinu obtuso, laciniis subulatis elongato-cellulosis. 
Perianthia pro plantula maxima, foliis caulinis 16plo majora (!) trigono- 
subulata, ore profunde 6-fida, laciniis ciliiformibus. Calyptra parva 
tenuis. Capsula oblenga. 
Rami ¢ ceteris ramis eequilongi, assurgentes: bracteze plurijuge secunde 
confertee suberectze subulate, cellulis 5-6 constantes, integre 
bifideeve, monandre. Bracteolas nullas vidi. 
Obs. The leaves never want the terminal minute hooked cell, which is 
very mostly imposed on a truncato-conical cell of four times the size, 
these two cells constituting the entire leaf. But sometimes there are two 
(in lieu of only one) basal cells, and then the leaf becomes subulate. 
This brings it into relation with C. micromera, whose leaves (consisting 
of about ten cells) sometimes lose one of the two apical teeth, and thus 
from bifid they become entire and subulate; but in other respects, and 
especially in the inflorescence and the structure of the stem, they stand 
widely apart. The long filiform leaves, or leaf-crura, of Arachniopsis 
forbid the placing of C. monodactyla in that genus, although it obviously 
approaches it. 
Subgenus IV. ALOBIELLA, Spruce, op. cit. (1882). 
Plante mediocres albicantes, facie (nisi pro foliis succubis) magis 
Kantie quam Cephalozie. Caulis postice ramosus, ramique foliosi—raro 
flagellares. Folia fere longitudinalia, distiche patula, plana, integra— 
vel alia integra, alia apice bidentella—laxe pellucide reticulata ; cellule 
majuscule magneve, subrectangulares, duplo longiores quam late. 
Foliola aliis speciebus prsentia, parvula, integra et bifida. Flores 9 
cladogeni; in unica specie acrogeni. bractee profunde bifide ; in unica 
C. acroseypha solum breviter 2—4-fide. Perianthia elongata, ab ipsa basi 
trigona, ore breviuscule fissa. Andracia vel spicata vel ad amenta postica 
redacta. 
§ 1. Foliola nulla. 
4. U. integrifolia. Dioica cladocarpa albicans nitens prostrata flagellifera. 
Folia fere longitudinalia subcontiguaoblonga rotundatasubtruncatave, 
rarissime apice bidentella, cellulis magnis oblongis. Br. bipartite, 
laciniis subulato-attenuatis. Per. alte emersa_lineari-subulata 
trigona, ore breviter trifida, segmentis apice 2—3-ciliatis. 
5. ©. macella. Monoica, facie C. bicuspidate formis macrioribus valde 
similis, distincta foliis planis ovato-triangularibus-trapezoideisve, 
apice rotundatis, retusis, oblique acutis (i.e. unidentatis) vel deni ue 
truncato-bidentatis, cellulis elongatis; bracteis bifidis, segmentis 
longe subulatis; per. ore breviuscule trifidis, segmentis 2-3-ciliatis. 
