266
ASPLENIUM,
§ ANISOGONIUM.
inches long subcoriaceo-membranaceous ternate, lateral pinnee alternate 1-3 inches long shortly petiolate dimidiatoovate acute erecto-patent, terminal one 4-5 inches long
ovato-lanceolate finely acuminate rather long-petiolate cuneate at the base all of them sharply serrated chiefly in their
upper half, veins oblique slender black fascicled 3-4 times
dichotomous lower superior ones generally anastomosing so
as to form a series of elongated areoles nearer the costa than
the margin, sori very long linear those of the veins that form
the areoles asplenioid meeting at the apex of the areole and
continuing diplazioid along the vein formed by the union of
the veins that constitute the areole, involucres (young) broad
membranaceous satiny.—Hook, in 2nd Cent, of Ferns, t. 51
(not Pr.). Diplazium ternatum, Liebm. Fil. Mex. p. 100.
Metten. Asplen. p. 162.
Hab. Mexico, Dept. Oaxaca, Liebm. in fieri.
Nostr.—This
is a very peculiarlooking plant, very uniform in the three fronds in my possession, and bearing
copious, though not very advanced sori. It is quite unlike any other
Asplenium
with anastomosing venation.
** Fronds
pinnated,
the less fully
developed
ones often
simple.
296. A. (Anisogonium) Kunzei, Mett.; caudex short stout
erect, stipites 6-14 inches long stout and as well as the rachis and costa and often the primary veins beneath furfuraceo-paleaceous, fronds subcoriaceous blackish-green from
10-14 inches long or more subspathulato-elliptical acute
cuneate or attenuated at the base entire or irregularly and
acutely sublobate at the margin or broad ovato-truncate at
the base and variously sometimes deeply pinnatifid with a
subtriangular and acute entire apex or deltoideo-ovate and
pinnated in the lower half with two pairs of nearly opposite
sessile lateral pinnae oblong 6-10 inches long 2 inches broad
shortly and rather bluntly acuminated truncated at the
base, the upper half or nearly so 8 inches long broad trian­
gular acute deeply pinnatifid with large horizontal segments
of the same shape as the pinnae, veins numerous horizon­
tally patent fascicled several times dichotomous copiously
anastomosing even from the base where they form large
costal areoles, sori diplazioid attached to all the veins conti­
nuous and anastomosing with them, involucres membrana­
ceous brown singularly crispato-undulate.—Metten. Asplen.
p. 182. Fil. Hort. Lips. p. 74. Asplen. p. 1 7 1 . Diplazium
pinnatifidum, Kze. in Linncea, ix. p. 72. Anal. Pterid.