TAB. CL. 
ASPLENIUM DOUGLASII. 
FILICES.—GxrzaATz. Br.  PorvronracEz. Kaulf.  Fririczs vere. Willd. 
GzwN. Cnan. ZAZSPLENIUM, Linn. Sort lineares, sparsi, dorsales. Znvolucrum e vena lateraliter 
ortum ducens, margine superiore libero. 
AsPLENIUM Jousiass; fronde simplici cordato-ovata breviter acuminata integerrima, soris gemi- 
natis. ; 
Has. Prope Rio de Janeiro. JD. Douglas ; ubi etiam legit D. Miers. 
Caudex non visus. 
Stipes 6—8-pollicaris, erectus, flexuosus, subteres, hinc sulcatus, nudus vel ad basin solummodo paleaceo-squa- 
mosus. : 
. Frons spithamzea, cordato-ovata, breviter acuminata, membranacea, basi sinu profundo, margine subundulata, 
ubique integerrima, costata, nervosa, nervis patentibus basi dichotomis, marginem versus anastomosantibus, 
reticulatis. 
Sori longi, lineares, strictissimi, dichotomis venarum inserti, et hinc per paria approximati. 
Involucrum lineare, angustum, demum capsulis numerosissimis omnino tectum. 
Capsule globosse, fuscse, longe stipitatae. 
Semina intense fusca, ovali-rotundata, angulata, limbata, limbo pellucido, flavo. 
Fig. 1. Portio frondis cum soris. f.2. Capsule. £f 3. Semina:—magn. auct. 
The habit of this fine new Fern is so entirely that of a Scolopendrium, that until I had removed 
the capsules from the sorus, and carefully examined the involucre, I could not persuade myself that 
it was any other genus. "This involucre, however, is clearly that of an zZsp/entum. "The species was 
first brought to our knowledge by Mr. David Douglas, who, on the voyage to the North-West Coast 
of America, remained a few days at Rio Janeiro; where he was no less steadily engaged in furthering 
the object of the EIorticultural Society, than he was on the banks of the Columbia and in the Rocky 
Mountains. We have much pleasure, therefore, in dedicating the present species to that zealous 
Naturalist, whose career we have watched with no ordinary satisfaction for some years past, and 
who promises to do yet more for science in another extensive mission. 
