198 LEptTo-LEJEUNEA. 
Amenta ¢ f. caulino duplo longiora; bracteze laxe julaceo-imbricate sub 
6-juge subrotundo-saccatee compresse. 
Foliis L. stenophylle L. et G. Syn. Hep. 769, sat similis, foliolis longe 
diversa, 
Suscenus XXIV.—CHRATO-LEJEUNEA, 8S. 
Plants pusilla vel sat robust, colore lurido scepissime insignes, nitidze 
tamen interdumque quasi vernicosee, rufescentes, rufo-badize vel fere 
nigre, rarissime pallidee vel virescentes, post siccationem facile aqua 
saturandie, citoque iterum exsiccande, ceespites depressos, szepe latis- 
simos denseque stratificatos efticientes. Caules prostrati, vix unquam 
suberecti, ramis autem in paucis speciebus assurgentibus; sat validi, 
inzequaliter (raro symmetrice) pinnatim ramosi. 
Folia contigua vel seepius subimbricata, nunquam densa, apice plus minus 
decurva, in sicco insigniter fornicata involutave, oblique ovata ob- 
longave, aliorum specierum dimidiata subfalcataque, inferiora seepius 
obtusa rotundatave, superiora seepe subacuta, raro acuminata, apice 
v. integerrima v. (sepeque in eadem specie) dentata, raro toto fere 
margine serrulata, basi plerumque cellulis paucis magnis ocellata; 
exter cellule subparvee pellucidee, pariete fere semper tenui fusci- 
dulo; lobulus parvus minutusve inflatus, raro obsoletus, foliorum 
rameorum tamen 2 infimorum szpe maximus, imo totum folium in 
utriculum reniformem facie supera perforatum involvens. 
Foliola in pusillis parva, foliis caulinis 3-6-plo breviora, subrotunda, ad 4 
bifida, in elatioribus cordato-ovata-reniformiave, folii dimidium v. 
totum sequantia, apice pro more breviter bifida bidentatave, in omnibus 
integerrima vel rarissime utrinque 1-dentata (in L. Brasilienst, quam 
nondum vidi, “ denticulata” dicuntur). 
Flores in aliis monoici, in aliis dioici. Ramus ? brevis longiorve—nun- 
quam ad florem solum redactus—plerumque uniflorus, semper tamen 
innovatione, vel unilaterali vel duabus oppositis, auctus. Br. erectze 
foliis subsimiles, plerumque acutiores magisque dentate, lobulo ma- 
jore explanato; bracteola plus minus late ovalis bifida. 
Perianthia pro more emersa, urni-vel pyriformia vel obconica, 4- (raro 5-) 
carinata, carinis plerumque humilibus, seepe papulosis, ultra perianthii 
apicem truncatum brevi-rostellatum fere constanter in cornua breviora 
longiorave—interdum longissima—varie patula, protractis. Capsula 
subglobosa. 
Andreecia fere semper ramulo proprio constantia, raro terminalia, brevi- 
raro longi-spica; bracteze in paucis minutee, in plurimis majuscule. 
Hab. et Distr. In sylvis Amazonicis umbrosissimis, preecipue ripariis, 
valde frequens, ad arborum corticem, ramulos et folia viva, ad truncos 
inundatos (raro ad putrescentes) saxaque, plagas seepe preelatas, inter- 
dum pro aspectu funereo insignes, efficiens. In Andium montes 
humiliores raro et sporadice ascendit; in sylva Canelos autem, alt. 
1000-1500 m. species duas pulchras, ut videtur novas, reperi; in M. 
Chimborazo, eadem altitudine, speciem singularem, L. spinosam 
Gottsche, antea in insulis Antillanis inventam, legi. In tota 
America tropica abundare videntur species, in céeteris terris tropicis 
tamen multo rariores.—Bene dicunt cl. auctores ‘Synopseos Hepat.’ 
“Plante hujus sectionis inter se maxime congruz difficillime sunt 
