88 OMPHALO- LEJEUNEFA. 
obscurissime trigona, pyriformia, vel a basi obconica subcylindrica, 
apice rotundato. depresso, centro minute perforata, demum 3-pluri- 
fida, Jaciniis inflexis. Calyptra paulo brevior pyriformis, apice sub- 
regulariter 4-fida. 
Amenta ¢ in planta propria cauligena, crebra, globosa, oblonga v. spicata; 
bracteze 2-10-jugee foliis 2- plo et ultra minores, subconferte basi 
turgidissimee, profunde bifidee, lobis subeequalibus ovato-triangulari- 
bus obtusis. Inter Omphalanthum Jjiliformem, Sw. et O. gemini- 
florum, M. et N., nullum discrimen invenio. 
Flores 2 ad ramum brevissimum 1—2-vel 3-ni in una et eadem stirpe; 
ex innovationibus oppositis interdum dichotomiales. 
Suscenus V.—ARCHLLEJEUNEA, Spruce. 
Plantie sat elatee speciosse rufescentes, raro subluride viridesve, in sicco 
tam forma quam colore parum mutate, ramicole et corticola, czas- 
pites v. plagulas dilatatas sistentes, raro aliis hepaticis muscisque 
consociate. Caudex longe repens, caules pro more assurgentes, v. 
ultra matricem (seepe fruticis ramulum) patulos stratificatosque v. 
pendulos, vage—rara subpinnatim—ramosos, ramis plerumque paucis 
inequilongis, in pl. 9 iteratim innovando-elongatis, raro dichotomis, 
subarhizos proferens. 
Folia magna (‘75-2°25"™)—in unica specie (clypeata) parvula—imbricata, 
subrotunda v. sepissime oblonga sublingueformia, valde obtusa 
Seas , nunquam acuta, integerrima ; lobulus majusculus (=folii 
44) subrhomboideus, acutus, apiculatus, ‘bidentulusve, margine (raro 
fotus) planus integerrimus, ad carinam subinflatus, neque vero sac- 
catus; cellule parvule mediocresve, raro majuscule, subconformes, 
leptodermes, v. pariete ad angulos subincrassato, pellucide, solum 
ambitu opacee. 
Foliola foliis subeequilata, breviora tamen, orbiculata v. reniformia, basi 
exciso-amplexantia v. cordata, integerrima, haustoria scopeformia 
rarissiine proferentia. 
Flores dioici, in paucis monoici: 9 in ramo iteratim innovando-prolifero 
terminales, rarissime (in speciebus paucis monoicis) e caulis apice 
dichotomo, florescentiam magnam, 9 vel ¢, in furca gerente, ad 
brachia monotrope innovanda seriatim secundi. Bractev foliis 
parum diversee, integerrime ; bracteola integra v. aliarum sp. 
breviter bifida. 
Perianthia emersa pyriformia pellucida, ex apice rotundato retusove 
(nunquam obcordato) rostellata subcompressa 4 (—5)-quetra—raris- 
sime antice posticeque 2-3-carinulata—carinis raro levissimis, 
plerumque ala rudimentaria interrupte limbatis v. saltem exas- 
peratis—nunquam tamen denticulatis ciliatisve. 
Andreecia rami apicem mediumve tenentia; bractese pro more plurijuge 
foliis paulo minores subineequilobe, diandree. 
[ Brachio-Lejeunca ab Archi-Lejeunea differt: ramificatione in plantis 
fertilibus tota fere dichotoma, in sterilibus seepe laxe pinnata; foliis sepe 
acutis, lobuli saccatt margine ‘transverso cren ulato ; folrolis seepe insigniter 
decurrentibus; florescentva normali paroica et cautoic a; bracteis denticulatis ; : 
perianthiis vi aro subse squaliter 4—5-gonis seepius 7-10- ~plicatis, carinis plicisve 
omnibus sublevissimis. | 
