OTIGONIO-LEJEUNEA. 
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5. OTIGONIO-LEJEUNEA 5-UMBONATA, Spruce. 
Hab. In sylva Amazonica, variis locis, preecipue secus fl. Negro, necnon 
in Andium radicibus ad Tarapoto; nusquam frequens, semper in 
cortice vetusto vigens. 
F 6x °4,°5x°35, lob 1-2, c Jab; fit 125-2; br 8x3, 9 x °35, °7K 3; 
br "6X35; per “75 X°3, ‘55 K"25™™. 
Pusilla viridis albicansve prostrata, matrici arcte adherens, tenuis, tener- 
rima, post siccationem haud facile emollitura. Caules 3-4-pollicares 
vage ramosi, interdum decompositi, ramis paucifoliis. 
Folia basi sola imbricatula, subplana, oblique (vel subsemi-) ovato- 
oblonga, abrupte acuta obtusave, inferiora seepe rotundata, margine 
pulchre celluloso-crenulata vel (rarius)-serrulata, plerumque elobu- 
lata, lobulo presente tamen ovato folio 3-5-plo breviore ; cellule 
mediocres valde diaphanz fere vacue, pariete tenuissimo, inferiores 
sensim majores, marginales obtuse—rarius acute — prominule, 
ceeterze subplanee. 
Foliola distantia, foliis 4-plo minora, fragilissima, rotunda, ad 4 bifida, 
segmentis acutis subobtusisve. 
Flores monoici: @ terminales, innovatione florifera, ¢ vel 9—raro 
neutra—interdum iterum innovata—suffulti. Bractez foliis dimidio 
longiores suberectie, ligulato-oblongee-lanceolateve acute obtuseeve 
celluloso-crenulatee insuperque (sed rarius) grosse subserratz, basi 
anguste complicate (vel non), lobulo minuto lineari, seepe nullo; 
bracteola oblonga vel ovali-cuneata integra, retusula, vel breviter 
bidentata (in fl. sterili ad medium fere fissa). 
Perianthia immersa, clavato-obconica vel anguste pyriformia, ex apice 
depresso insigniter conico-rostellata, subcompressa, inferne ecarinata, 
supra medium 5-carinata, carinis apice umbonato-prominulis— 
cornua rudimentaria obtusa, raro subacuta, fingentibus, cellulic 
extantibus dissitis pellucidis papillosis; demum, fructu egresso. 
obeconico-campanulata, ore hiantia. Capsula globosa, in pedicellc 
geniculato exserta. 
Amenta ¢ rami apicem, rarius totum tenentia, flori ? adjecta dissitave ; 
bracteze 3-4-jugee—raro usque ad 10-jugee—majusculee, 
Otigonio-Lejeunea 5-wmbonata inter hoe subgenus et Hu-Lejeuneam 
medium locum tenet, melius forsan ad posterius referenda.—Hu-Lejeunea 
Tarapotensis, perianthiis ad carinas apice prominulas papillosis, nostree 
affinis est; differt foliis majoribus omnibus rotundatis integerrimis ; 
foliolis pro ratione minoribus; bracteis foliis sat brevioribus (nec multo 
longioribus); demum perianthiis ab ipsa basi (nec apice solo) carinatis. 
Supcenus XX VIJL—HYGRO-LEJEUNEA, S. 
Plantze elatee speciosee tenerrimee laxe textee valde hygrophore, recentes 
pallidee, in sicco seepe fuscescentes. Caules erecti, vel ex parte re- 
pentes ex parte penduli, seepe dense stratificati, varie ramosi, ramis 
2 swpissimo dichotomis, planta 2 tamen steriliumque laxe pinnatim 
ramosi, ramis interdum microphyllis. 
Folia magna, ‘6-1:5™ longa, ‘45-1:1™ lata, subimbricata, semicordata, 
plus minus acuta, raro obtusa rotundatave, lobo a sacculi basalis 
