Plate 20. 
NEPHRODITJM (Lastrea) spinulosum, Willd., 
y. AiMULUM. 
Prickly Buckler-Fern; var. cemulum. 
Nephrodium (Lastrea) spinulosum; caudex short, stout, suberect, paleaceous; 
stipites tufted, stramineous, brown at the base, scaly; fronds ovate or 
oblong-ovate, one to two feet and more long, bi-tripinnate; primary pinnae 
rather distant, upper ones from a broad truncated base, oblong, inferior 
ones ovate, both gradually acuminate, secondary ones and pinnules close- 
placed, ovate or oblong, sessile, more or less coarsely spinuloso-serrate or 
pinnatifido-serrate; sori chiefly on the upper half of the frond, in two rows 
upon each pinnule; involucres entire or fringed with glandular hairs. 
y. cemulum ; “ fronds triangular or triangular-ovate, spreading, tripinnate; pin¬ 
nules concave; pinnulets pinnatifid, the mucronately serrated lobes curved 
upwards; scales of the stipes concolorous, narrow-lanceolate, laciniate or 
fimbriate contorted; indusium margined with minute sessile glands. 55 
Moore. (Plate 20.) 
Polypodium semulum.* Solander in Ait , Hort. Kew. ed. 1. v. 3. p. 466. 
(“ Fronde quadripinnatifida glabra, pinnis oblongo-linearibus incisis, laciniis 
apice denticulatis. 55 ) 
Aspidium semulum. Sw. Syn. Ml. p. 60. Willd. Sp. ML v. 5. p. 283. Ait. 
Hort. Kew. ed. 2. v. 5. p. 513. Metten. Aspid. p. 58. 
Lastrea semula. Brack. Fil. U. 8. JExpl. Fxp. p. 200. J. 8m. Cat. Kew Ferns , 
p. 58. Moore , Handb. of Brit. Ferns, ed. 3. p. 139. 
Nephrodium Foenisecii. Lowe, Brim. Faunae et Florae Maderce, p. 7-f Seubert, 
FI. Azor. p. 16. 
Lastrea Foenisecii. Wats, in Fhytol. v. 2. p. 568. Bab. Man. of Brit. Bot . 
ed. 4. p. 422. Moore, Brit. Ferns , Nat. Frint. t. 27. 
Lophodium Foenisecii, L. recurvum, and Lastrea concava. Newm. 
Aspidium recurvum. Bree, in Fhytol. v. \. p. 173. 
Aspidium dilatatum, var. recurvum. Bree, in Mag. of Nat. Hist. v. 4. p. 162. 
Hook, and Am. Brit. FI. ed. 8. p. 586. 
Aspidium dilatatum. Holl, FI. of Mad. in Hook. Journ. of Bot. 1834, v. 1. p. 16. 
* I believe it was Mr. James Yates Johnson, who was the first to determine 
(in 1856), by comparison in the Banksian Herbarium, that the Aspidium Foeni- 
secii of Lowe is identical with the Polypodium cemulum of Dr. Solander, as re¬ 
lated in Hook. Kew Harden Misc. v. 9. p. 163. 
f “Fronde triangulari v. ovata, 3-4-pinnatifida, utrinque glabra: laciniis 
(tertii quartique ordinis) oblongis, obtusis ; ultimis incisis, mucronato-serratis ; 
omnium inferioribus exterioribus intends oppositis majoribus: soris numerosis 
distinctis: indusiis primo semiovatis vel reniformibus, dernum orbiculatis emargi- 
natis: stipite breviusculo, basi sparsim subpaleaceo, fusco, superne rachique 
pallidis. 55 “ Species Aspidio dilatato et spinuloso auct. certe proxima ; sed dis- 
tingui posse credo, figura frondis abbreviata, deltoidea; stipite breviore, minus 
(sc. basi tantum) paleaceo” (not so in our Madeira specimens), “pinnis angus- 
tioribus, odore. His adde frondem magis decompositam.” Lowe, l. c. 
