"FAB. CXLVIIL. 
HYMENOPHYLLUM CRISTATUM. 
FILICES.—GvnaTz. Dr.  PorvropiaAcrm. Kaulf.  Firiczs vere. JWlilld. 
Gr. CHan. HYMENOPHYLLUXM, Sm. Sori marginales. Capsule sessiles, receptaculo 
communi cylindraceo inserte, intra Zmvolucrum bivalve, textura frondis, valvis planis, exterius 
liberis. B». 
HywENoPHYLLUM cristatum ; fronde oblonga pinnata, pinnis bipinnatifidis, segmentis linearibus 
obtusis costaque dorso aculeato-serratis, soris rotundatis bipartitis spinuloso-ciliatis. 
Has. In Monte Cayambe, Andium Peruvianorum, ad truncos arborum ; altit. 2500 hexap. 
prope limites nivis perpetue. 1828. JD. Prof. Gul. Jameson. 
Caudex repens, gracilis, filiformis, hic illic radicans, radicibus hirsutis. 
Spes subuncialis, teres, nudus, gracilis. 
Frons digitalis ad palmarem, circumscriptione oblonga, pinnata, pinnis oblongis, bipinnatifidis, glabris, fuscis, 
superioribus decurrentibus, laciniis linearibus, obtusis, pulchre reticulato-venosis, costatis, margine spinuloso-- 
serratis, costa subtus rachique spinulis vel serraturis membranaceis latis acutis cristatis. 
Sori majusculi, marginales, prope basin pinnarum superiorum, sessiles. 
Involucrum orbiculare, bivalve, dorso utrinque convexum, marginibus planis ciliato-spinosis. 
Fieceptaculum perbreve, globosum. 
. Capsule peltatee, annulo transversali completo cinctee, sessiles. 
Semina. ovalia, subangulata, obscure reticulata, pallide flava, pellucida, granulis minutissimis numerosissimis mixta. 
Fig. 1. Portio pinne. f. 2. Portio altera: magis aucta. f. 3. Involucrum. f. 4. Receptaculum capsularum. 
f. 5. Semina cum granulis :—magn. auct. 
For this highly interesting addition to the genus Fymenophyllum we are likewise indebted to our 
friend Professor William Jameson. It is distinguished no less by the serrated or spinulose crested 
midrib and rachis, than by the large and conspicuous involucres. 
