TAD- CCIV. 
TRICHOMANES BANCROFTII. 
FILICES.—GvRaTz. Br. PorvropraAcEx. Kaulf. Frrrczs vere. Willd., Spreng. 
GreN. Cuag. TRICHOMANES, Sm. Sw.  Sori marginales. Capsule sessiles, receptaculo 
| communi cylindraceo inserte, intra Znvolucrum monophyllum, suburceolatum, ore hiante, 
textura frondis. Jr. 
TRicHoMANES Zancroftii ; frondibus ovato-deltoideis profunde bi-tripinnatifidis, laciniis lato-linea- 
ribus obtusissimis integerrimis minute reticulatis marginibus parce pilosis, involucris cylin- 
draceo-campanulatis omnino immersis, ore dilatato vix bilabiato, stipite superne late alato. 
Has. Insula Jamaice. /V. Bancroft, M.D.; JD. IF'iles & Hieson. Demerara. D. Parker. 
Caudex, ut videtur, brevis, repens, radiculas filiformes flexuosas ramosas subtus emittens. 
Stipites bi-tripollicares, erecti, inferne semiteretes, nudi, superne late alati. 
Frons ovato-deltoidea, subdigitalis, profunde bi-tripinnatifida, elastico-membranacea, rigidiuscula, minute reticu- 
lata, obscure viridis; Jacinie primarie subhorizontaliter patentes, circumscriptione ovatee, segmentis linearibus 
obtusis, unicostatis, integerrimis, margine sparsim pilosis, pilis clavatis, biarticulatis. 
Involucra semper ad apices laciniarum, omnino immersa, et ita latissime alata, cylindraceo-campanulata; ore per- 
brevi, obscure bilabiato, labiis demum patentibus. 
Receptaculum valde exsertum, involucro quintuplo longius. 
Capsule orbiculares, peltatze, annulo lato cinctee. 
Semina ovali-globosa. 
Fig. 1. Portio frondis cum involucris. f. 2. Portio laciniz. f. 3. Pilus e margine frondis. f. 4, 5. Capsulse. 
f. 6. Semina. 
"This species of. Z'ichomanes we have received both from Jamaica and from Guiana. Our spe- 
cimens from the latter country, sent to us by Mr. Parker, were accompanied by the observation, 
—Nwhich is perfectly correct, —that the species approaches to the 7* pyaidiferum of Swartz, and the 
Trichomanes of Plumier, £ab. 50. f. E. ; but that the fronds are deltoid instead of ovato-acuminate, 
and that the involucres are invariably terminal, never * in axillis foliorum" as figured by Plumier 
ed described by Swartz: to which we may add, that Swartz speaks of the involucres as subpedi- 
cellate, and only margined at their base; whereas in our plant they are most distinctly immersed. 
Hence we cannot hesitate in considering the species as new, and we are anxious to dedicate it to 
our friend Dr. Bancroft, to whom we are indebted for a very considerable collection of the Ferns of 
Jamaica. i 
The plants of this species vary in size, as may be seen by the figures; but the essential characters 
are invariable throughout. 
