Tas. 5159. 
LLAVEA corDIFOLIA. 
Cordate-leaved Llavea. 
Nat. Ord. Frtices.—CryproGaMia FILicks. 
Gen. Char. Pinna steriles et fertiles in eadem fronde. Sori lineares vel ob- 
longi in venas pinnularum transmutarum siliquiformium. Involucrum e margini- 
bus incurvis membranaceis dilatatis pinnularum soros tegentes.—Filix Mexicana. 
Caudex brevis, crassus, sguamosus. Frons subampla, tripinnata, elegantissima. 
Luavea cordifolia. 
Luavea cordifolia. Lagasca, Gen. et Sp. Plant. p. 33. Dict. Se. Nat. v. 27. p. 89. 
Hook. Sp. Fil. v. 2. p. 125. 
CERATODACTYLIS osmundioides. J. Sm. in Hook. Gen. Fil. t. 36. Fée, Gen. Fil. 
p. 228. 
Auxosorus Karwinskii. Kze. in Linnea, v. 13. p. 138. Benth. Plant. Hartw. 
p. 64, Kze. in Schkuhr, Fil. Suppl. p. 7. ¢.4. Hook. Ie. Plant. Rar. v. 4. 
t. 387, 388. 
BorryocramMe Karwinskii. Fée, Gen. Fil. p. 166. ¢. 15 C. 
. 
One of the most beautiful, and, in a state of cultivation, rarest of 
Ferns, native of Mexico, with a very peculiar habit; for, with a fruc- 
tification in many respects resembling that of our well-known 
Cryptogramme crispa, Br., it bears on one and the same frond 
two kinds of pinnules; the lower portion consists of sterile pin- 
nules only, the upper portion forms a graceful drooping panicle 
of pod-shaped fertile pinnules. No fern-collection suitable to a 
warm greenhouse should be without this charming plant. It is 
a solitary species of the genus. 
Descr. Caudex or rhizome short, thick, mostly concealed 
underground. Fronds tufted, including the stipes, from a foot 
and a half to two feet long, moderately broad, tripinnate, lower 
pinnae: sterile, the rest fertile. Pinnules of the sterile pinne an 
inch or more long, ovate or cordate-ovate, petiolate, between 
coriaceous and membranaceous, firm, delicate, bright-green, some- 
what acute, serrated with subspinulose teeth, the margins slightly 
thickened. eins pinnately two to three times forked, ultimate 
veialets terminating within the margin, and clavate. About the == 
january Ist, 1860. 
