Caudex in speciminibus a Bauero divina arte delineatis 15-30, imo
45-50pedalis, in alio cujus pinnae in herbario adsunt 12pedalis,
diametro pedali, erectus, cicatrisatus, cicatricibus ovato-oblongis
sesquipedalibus, squamosus, muricato-exasperatus, apice in frondes
plurimas expansus. Frondes 10pedales, stipite diametro basi
sesquipollicari tereti, paleaceo, muricato. Pinnae circumscriptione
ovatae 2pedales, ¾ ped. latae, rhachi tetragona paleis raris
conspersa, basi imprimis tuberculato-muricata; utrinque circiter 20,
approximatim alternae, apicem versus sensim minores, summae tandem
confluentes. Pinnulae oblongo-lanceolatae acuminatae 4-5 pollices
longae, ¾ poll. latae, e foliolis circiter 15-18, summis in acumen ¾
poll. longum confluentibus; rhachi secundaria paleis copiosis
conspersa. Foliola alterna, infima brevissime petiolata, reliqua lata
basi sessilia et in rhachin decurrentia, coadunata,
oblongo-subfalcata obtusa, 7 lin. longa, 2½ lin. lata, infima basi
subauriculata, obsolete rotundato-serrata, marginibus siccitate
subrevoluta, coriacea, glabra. Costa utrinque venas infra medium
2furcas exserens. Sori globoso-hemisphaerici, sinubus venarum
2furcarum insidentes, a folioli basi ad ipsum fere apicem utrinque
circiter decem. Involucrum lacero multifidum soris substratum.
Capsulae plurimae globosae, dense compactae, receptaculo
hemisphaerico impositae.