TAB. XLIII. 
Asplenium (Athyrium) medium, Carm. 
Caudice ^^6-7 uncias longo,” stipitibus 5-6 unclam longis 
stramineis basin versus incrassatis paleis longissimis angus- 
tissimis ferrugineis flexuosis obsitis, frondibus spltbam^is 
rigide subcoiiaceis deltoideis acutis bipinnatis, pinnis saepe 
oppositis liorizontalibus approximatis sessllibus 3 uncias 
longis ovato-lanceolatis, pinnulis unciam longis lato- 
lanceolatis sessilibus pinnatifidis acutis vix aurlculatis seg- 
mentis ovato-oblongis serratis, venis pinnatis dicbotomis, 
soris copiosis, involucris membranaceis reniformibus sinua- 
tis margine erosis, radii universali crinita. 
Asplenium medium, Hook. Sp. FiL 3. 228. 
Aspidium medium, Carm. in. Linn. Trans. \2. p. 311. 
Aspidium intermedium, Carm. Mss. in Herb. Hook. Athy- 
rium, Moore. 1ml. Fil. p. 96. 
Hab. Tristan d’Acunha, on the Table-land ; Dr. Carmichael y 
in Herb, nostr. 
A very distinct species, peculiar, as far as yet known to 
the island just mentioned. Its discoverer has noted, “ stem 
(caudex) about 6 inches high, crowned with a circle of fronds 
from 9 to 12 inches high.” 
Fertile plant ; nat. size. Fig. 1. Pinnule with sori. 2. 
Single sorus. f. 3. Setiform scale from the stipes : mag^ 
nified. 
Gent. 2 , t. 13 . 
