468 PLAGIOCHILA, 
Caudex repens ramosus exfoliatus. Caules 2—-3-pollicares, rufi, ascendentes, 
apice seepius iteratim innovando-floriferi, dichotomi vel (ex innova- 
tionibus unilateralibus) quasi simplices et geniculati. 
Folia rufescentia, subopposita, dense imbricata, decurvo-secunda, valde 
convexa, latissimesemiovata-cordatave obtusa, margine antico revoluto 
distanter denticulato basi longius decurrente, postico (basi recta 
excepta) crebre argute sed breviter spinuloso-dentata, dentibus 
omnibus numero 46-40; cellule mediocres, vel majuscule fere, 
equilatere. 
Flores 2 in caule terminales, innovatione suffulti; bractez (vix propriz 
et a perianthio dissitz) foliis conformes nisi paulo latiores. 
Perianthia emersa, basi subnuda, rufo-flava, oblonga, superne compressa, 
exalata, ore truncato ciliata. 
Foliis suboppositis, latioribus, basi seepius semicordatis, margine crebre 
spinulosis, a Pl. gymnocalycine distincta.—In iisdem locis advenit varietas 
claveflora, elatior, robustior, perianthiis clavato-oblongis ; a qua differt 
Pl. longiflora Mont. (e Chili allata) foliis alternis obovatis e perianthiis 
ore rotundatis. 
9, PLAGIOCHILA SYLVICULTRIX, Spruce. 
Hab. in planitie Amazonica prope San Carlos del Rio Negro, ad truncos 
prostratos, sterilis. 
F 2°25 x 2°4, 2°75 x 2°3, 2°5 x 2°25 ; ¢ Aye. 
Caudex repens tenuis intricato-ramosus. Caules erecti 13-2-pollicares 
rufi simplices vel subdivisi, ramis suberectis. 
Folia rufo-flavida swbopposita, dense imbricata, patula vel seepius decurvo- 
secunda, latissime semiovato-orbiculata, margine antico recurvo infra 
apicem subbidenticulata, postico toto, basi preelonga recta excepta, 
argute spinoso-denticulata, dentibus sub 18, brevibus; cellule 
parvulee eequilateree subopacze. 
Flores non aderant.—Foliis latissimis, interdum latioribus fere quam 
longis, minute opace areolatis, ab aflinibus distincta. 
10, PLAGIOCHILA SIMPLEX (Sw.). 
Jungermania simples Sw. Prodr. Fl. Ind. oce.; Plagiochila s. Lindenb. 
Sp. Hep. 54, t. 9. 
Hab. super truncos prostratos in Andium adicibus orientalibus ad 
Tarapoto, Canelos, &¢., nusquam (ut videretur) mm montes altiores 
ascendens ; in planitie ad San Carlos del Rio Negro legi. Etiam in 
ins. Caribeeis, Mexico et Brasilia observata fuit. 
F 20x 1:25; cs; per 30x13, 2°00 1:0™™. 
Caudex late repens subexfoliatus. Caules multi, subpollicares ascendentes 
simplices, furcati, vel apicem versus fasciculato-ramosi. ; 
Folia pallide rufula subimbricata recurvo-secunda, late semiovata rotun- 
data, marginibus basi tam recurvis ut folia cuneata appareant, antico 
apicem versus denticulata, postico toto fere apiceque argute brevi- 
uscule spinuloso-dentata, dentibus 16-22 ; cellule: mediocres eequi- 
laterce leptodermes. } 
Flores @ terminales, innovationibus oppositis perseepe suffulti. Bracteze 
1-juge, foliis latiores, toto margine crebre spinulose, perianthium 
basi laxe (vel vix) amplectentes. 
