Nightingaliane. N. O. Filices. 
TAB. DCCIII. 
TRICHOMANES POLYANTHOS. Hook. 
Czspitosum elatum rigidum, frondibus oblongis v. ovato- 
anceolatis attenuatis inferne pinnatis, pinnis lanceolatis 
horizontaliter patentibus subfalcato-decurvis bi-tripinnatifidis, 
segmentis lineari-obtusis, involucris supra-axillaribus copiosis 
magnis liberis campanulatis superne precipue tenuissime 
membranaceis, ore patente, receptaculis brevissimis omnino 
inclusis, stipite rachique tenui-marginata subrobustis scabris 
subhispidisque. 
Trichomanes polyanthos. Hook. Sp. Fil. 1, p. 138. 
Hymenophyllum polyanthos. Hook. in Nightingale’s Oceanic 
Sketches, App. p. 132 (not Sw.) 
Has. Pacific Islands. Sir Thomas Nightingale. 
tipes 3-4 or 5 inches long, very stout, relatively to other 
species of the genus, as is also the rachis, Frond 1 foot high, 
4-5 inches broad, very remarkable in the nature of its involucres, 
which are quite unlike any others, large, exactly campanulate, 
glossy, membranaceous, especially the upper pellucid half, in 
texture and form more resembling those of Hymenophyllum than 
Trichomanes, but they cannot be said to be 2-valved. The 
receptacles are also entirely, and in every instance, included 
within the involucres, 
Fig. 1. Lower portion of a frond ; nat. size. f. 2. Fertile 
segments. /. 3. Involucre :—magnified, 
