TAB. CCXIX. 
HYMENOPHYLLUM VALVATUM. 
FILICES.—Gxvnarz. Br. PorvropiACEX. Kaulf. Viriczs vere. Willd., Spreng. 
Gzw. CHaz. HYMENOPHYLLUM, Sm.  Sori marginales. Capsule sessiles, receptaculo 
communi cylindraceo insertz, intra Znvolucrum bivalve, textura frondis, valvis planis, exterius 
liberis. Zr. | 
HyMrNoPHYLLUM valvatum ; fronde ovata vel oblongo-ovata bi-tripinnatifida, laciniis lato-linearibus 
furcatis obtusis undulatis marginibus costisque subtus piloso-hispidis, involucris terminalibus 
bivalvibus, valvis ovatis convexis hispido-ciliatis vel nudis. 
Haz. In truncos arborum apud Esmeraldas, regno Peruviano; alt. 4000 ped. Prof. Gul. 
Jameson. 
Caudez filiformis, repens, nudus; radicibus tomentosis. 
Stipites bi-triunciales, teretes, glabri, nudi, atro-fusci. 
Frons digitalis, erecta, circumscriptione ovata vel oblongo-ovata, bi-tripinnatifida ; segmentis primariis late ovatis, 
membranaceis, reticulatis, approximatis, imbricatis ; acinis furcatis, lato-linearibus, obtusis, undulato-crispatis, 
integerrimis, marginibus costisque subtus sparsim piloso-hispidis. 
Involucra terminalia, ad apices laciniarum supremarum pinnze precipue sita, ovata, paululum compressa, profunde 
bivalvia; valvis nunc hispido-ciliatis, nunc marginibus nudis. 
Heceptaculum tenue, inclusum. 
Capsule orbiculares, compresse, peltatze, reticulatee, annulo completo latissimo. 
Semina subgloboso-angulata, pallide fusca, sub summa lente reticulata. 
Fig. 1. Portio frondis cum involucris, subtus visa. — f. 2. Involucrum valvis apertis. f.3. Capsule.  f.4. Se- 
mina:—magn. auct. 
The nearest affinity with this is perhaps the Z7ymenophyllum tortuosum, 'T'AB. 199. of this work ; 
but there the margins of the fronds are serrated, and the involucre is totally different, being mono- 
phyllous, with two small lips at the extremity. The hairs at the margin and upon the involucres of 
our plant are not always persistent; for in one of the specimens sent to us by Professor W. Jameson, 
they are almost entirely wanting, whilst those of the midrib beneath are present. 
