390 CEPHALOZIA, | PROTO-CEPHALOZIA. 
chlorophyllose. E filamentorum fasciculi basi oritur flos ? ; alia 
filamenta apice in amenta ¢ abeunt: florescentia igitur monoica. 
Bracte floris 2 trijugee tristichee confertz suberecta, intime majuscule 
bifidee-partiteeve integerrime, lamina basali ovata, laciniis subulatis 
apice fere capillaribus ; bracteola bracteis equilonga, magis profunde 
fissa ; cellulee magne tenues pellucide lineari-hexagone-parallelo- 
grammeve. Bracteze exteriores sensiin minores, conformes. 
Perianthia bracteas solum dimidio superantia, pellucida, trigono-subulata 
incurva, ore (tam sterilium quam fertilium) profunde (ad }-$) sexfida, 
laciniis tenuibus flexuosis capillaceo-acuminatis. Capsula parvula 
oblonga. 
Andreecia bracteis foemineis plus duplo breviora tenuia recurva ; bractez 
sub 10-jugee minute incurvo-secunde ovate bifidee monandre. 
Subgenus II. PTEROPSIELLA, Spruce. 
Pteropsiella Spruce in Journ. Bot. (1876). 
Plant sat robuste, pro filicula, Metzgerta vel Pallavicinia quadam 
facile preetervisee. Caulis validns, utrinque prelate alatus, revera frondi- 
formis, serpentinus, facie infera ramos alios trondosos, alios flagelliformes, 
alios floriferos proferens, folia autem nulla parte preter ad florescentias 
ostendens. Bracteew @ folia tristicha profunde bifida sistentes. Pert- 
anthium prelongum lineari-subulatum trigonum, leptoderme, _ ore 
6-laciniatum. Calyptra parva tenuis. Capsula oblongo-cylindrica 
ceeteraque omnino Cephaloziw. Andrecia amentiformia, postica, raro in 
ipso caule terminalia; bractece monandree. 
2. CEPHALOZIA FRONDIFORMIS, Spruce. (Tab. XVI.) 
Pteropsiella frondiformis S. in Journ. Bot. 1876. 
Hab. in aggeribus umbrosis, rivulorum ripis, truncis semiputridis, 
fructibus lignosis decisis, etc., ad fluvios Negro, Uaupés et Casiquiari, 
frequens, prope pagum San Carlos preecipue. 
Cellule frondis 3, -35°™, bractearum Wo" longe. Bractee intime 1:3 x °8; 
per 3°8x°7; cal 9x°6; caps “(5x'3; amenta g 15-20; br g 
“3 x <6) 
Frondes 1-2-pollicares olivaceo-virides prostrate: plance serpentine, ramos 
paucos posticos frondiformes simplices—raro iterum ramosos— 
edentes, basi ad solam costam redacte, deinde in laminam tenuem 
lato-linearem—hic illic constrictam adeoque inzequilatam—apice 
angustatam, dilatatee ; subtus per intervalla radicellas breves fasci- 
culatas, necnon flagella aphylla radicellis hirta demittentes. Caulis 
(costave) validus semicylindricus, supra planus 2-3-cellulas latus. 
Cellule caulis corticales 9-seriatee brevi-cylindricee subcompressee 
pellucidee, interna 2-3-plo angustiores sub 20-seriatee subopacee. 
Pagina frondis latitudine inaequalis, plerumque utrinque 4-6- 
cellulas lata, hie illic ad 12 cell. usque lata, margine crenulato-erosa ;. 
cellule majuscule elongato-4—6-gonze, in seriebus angulum 70° cum 
costa formantibus dispositee, pellucida, fere vacuee, leptodermes, in 
ztate subincrassate, marginales longe minores. 
Flores dioici: @ ramulo perbrevi, facie costee postica orlundo, sursum 
curvato, constantes. Bracteze 3-stiche, 3-4-jugee; intima multo 
