PALLAVICINIA. 537 
(seepius autem facie postica ramosa, rarius apice fureata) ; situ antico 
florescentie tam ¢ quam 2; antheridiis solitariis, ad costa mar- 
gines uniseriatis, bracteatis; involucro ? eidem Symphyogyne per- 
simili, revera bracteis 2—3-seriatis, varie fissis, in cyathulum plus 
minus arcte connatis constante ; differt autem presentia pertanthw 
magni tubularis carnosi, ore ciliolati. Calyptra, eadem fere forma 
ac Symphyogyne, tenuior est, solum infra medium carnosula et 
pistillidiis sterilibus (sub 20) sparsa—nec apice ipso pistillidiis coro- 
nata. Capsula tenui-cylindrica, unistrata, valvulis 4 sepe incom- 
plete dehiscentibus. Llateres et spore cum iis Symphyogyne exacte 
fere congruunt. 
Hab. et Distr. Species forsan solitaria huic generi recte adscripta, 
per orbem terrarum rarius dispersa, loca humida umbrosa tam calida 
quam frigidiuscula diligit. 
1. PauuAvictnia LyELLit (Hook.) Gray. 
Jungermania Lyellia Hook. Brit. Jung. t. 77 
Hab. In humidis umbrosis ad truncos putrescentes saxaque, rarius in 
ipsa terra, in Andium orientalium radicibus sat frequens et fertilis : 
Canelos, Tavalosos, Guayrapurina, &c., raro supra 1000 metra ascen- 
dens; in planitie hic illic in statu solum sterili observata fuit—Stirps 
cosmopolitana, nullibi autem copiosa. 
Frondes 30 x 4-6; ¢ 7-4; coste sectio 85 x°35; invol. 9 1:5 altum; per 
100x1:3; ped 35; caps 4:0x°8, cellule } longe; pistill. 6; invel 
¢ “4=™ latum. 
Frondes in plagas latiusculas extens, vix stratificatee, pallide virides, 
flavicantes vel lurido-purpurascentes, subpollicares, simplices vel 
frondulas 2-4 e facie postica basin versus proferentes, obovato- 
ligulatze vel breviores et subovatie, apice emarginatz rarissime semel 
fureatee, basi sensim vel abrupte angustate radicellis villose (ideo 
caudicem repentem alatum simulantes), superne a matrice plerumque 
liberee arhizz, undulate, valide costate integerrime vel subserratz. 
Cellule paginzee magne oblongo-hexagone, leptodermes pellucide, 
fere vacuze. Costa plano-convexa, subtus alte rotundata, filo axiali 
nigro lignescente, cellulis pluristratis angustissimis constante, per- 
cursa. 
Flores dioici: @ antici, seepe 2 plus minus dissiti cujusque frondis costa 
medium versus insidentes. Bracteze in ivolucrum alte cupulare, 
fertile carnosum, sterile tenuius, ore in lacinias ciliiformes pluri- 
fidum, demum perianthii basin arcte amplectens, connate. Pistil- 
lidia 20, preelonga. 
Perianthium erectum lineari-cylindricum carnosum, inferne 5 cellulas 
crassum, ore subconstricto lobato-ciliolatum. Calyptra paulo brevior 
angustiorque rufula superne tenuis, a basi ultra medium 2-3. crassa 
et pistillidiis sterilibus sparsa, apice irregulariter rupta. Pedicellus 
elongatus, totam frondem excedens, pallidus tenellus. Capsula 
ealyptra duplo brevior, subcylindrica, 5plo longior quam lata, 
