156 PRIONO-LEJEUNEA. 
lobulus 3-plo minor ovatus inflatus exciso-acutus; cellule parvule 
(inferiores majores), valide incrassate, pellucidee, annulo chlorophylli 
angusto, marginales conice, ceeteree planze. 
Foliola distantia triplo minora oblongo- rotunda ad medium acute bifida, 
segmentis acuminulatis. 
Flores monoici: @ ramulo perbrevi constantes, innovatione nulla. 
Bracteze 1-jugie foliis eequales faleato-lanceolatee subacuminatee muri- 
cato-serrulatee, lobulo duplo minore angusto lineari-rhomboideo 
acuto; bracteola cuneato-lanceolata ad 4 acute bifida, serrulata. 
Perianthia emersa cuneata v. obtriangularia, retusa, subobcordata (obscure 
rostellata) conipressa, margine complanata, apice lato muricato- 
spinulosa. 
Amenta ¢ folium caulinum vix zequantia; bracteze paryule 2-6-juge. 
Species pulchra distinctissima, colore rufulo, foliis minoribus angusti- 
oribus acumine longiore tortili, margine toto recurvulo, argutius muricato- 
spinulosis, lobulo majore ; foliolis angustioribus ;_ perl nanthiis demum 
magis spinulosis. 
4, PrioNo-LEJEUNEA DENTICULATA, Web. 
Jung. denticulata Web. Prodr. 30; G. L. et N. Syn. Hep. 337. 
Hab. In sylvis fi. Negro, Uaupés, Casiquiart, etc. frequens, in cortice 
ramulisque, rarius in foliis vivis, semper fere super alias Lejeuneas 
vel Plagiochilas parasitans; ad pedem occidentalem montis Chimbo- 
razo, alt. 1000". In insulis Antillanis sat frequens videtur. 
F *65 x “45, °5 x 38, lob “1-15; ¢ Dy 3 f* “3x 3, 25x 26, 15 xb aemeoos 
mer 6D xX Gem. 
Mediocris, pallida, subflavida, tenuis. Caules pollicares filiformes flexuosi 
ineequaliter pinnati et subbipinnati, arcte repentes, intricati, ramis 
elongatis seepe subliberis arcuantibus. Radicellze vel fasciatee vel in 
haustorium scopreforme patentes, apice nodoso-ramosze. 
Folia parum (ad } lat.) imbricata, decurva, raro subplana, semicordato- 
ovata subi rbrupte brevi-acuminulata acuta, apicem versus erosula v. 
subserrulata, margine toto e cellulis prominulis muricato-denticulata, 
valide sinuato-complicata, supra sinum divergentia; lobulus folio 
sub 5-plo brevior ovatus inflatus, apice brevi incurvo, raro obsoletus; 
cellule parvee subsaequales, solum inferiores sensim majores, mar- 
cinales conicee, ceeterae convexe v. fere plane, omnes pariete ad 
angulos incrassato. 
Foliola dissita, foliis 2-4-plo minora, suborbiculata, ultra 4 acute bifida, 
segmentis acutis subacuminatisve, integerrima. 
Flores monoici: 9 in ramo brevissimo, foliis parvis unijugis nullisve, 
folioloque unico infra florem stipato, terminales. Bracteze foliis sat 
minores, complicato-bilobe, lobo oblongo acuto, lobulo longe minore 
rhomboideo; bracteola tenuis obovato-lanceolata ad 4 acute bifida; 
omnes margine muriculatee apiceque interdum serrulate. 
Perianthia f. caulinis sublongiora obcordato-cuneata-spathulatave, valde 
compressa, antice depressa postice convexo-carinata, apice profunde 
emarginata brevi-rostellata, margine supra medium sparse muricu- 
lato-dentata, interdum dente longiore hic illic interposito subspinu- 
losa, carina postica leevi rarissime aspera. 
Andrucia tenui ramulo constantia; bracteee 4-12-jugee foliis plus duplo 
