Download 48 foliate or pinnate and bi- or trijugate with the margin scabrous

48
BLECHNUM.
foliate or pinnate and bi- or trijugate with the margin scabrous,
terminal pinna (very large) oblong-lanceolate rather obtuse,
lateral ones subsessile elliptical or oblong obtuse or roundish,
superior ones often auricuhform, stipes of middling length
roughish a little paleaceous at the base, caudex short hori­
zontal branched stoloniferous sparingly fusco-paleaceous."
Kze.—Link. Hort. Reg. Berol. ii. p. 75. Kze. in Schkh. Fil.
Suppl. i. p. 128. t. 57. / . 2. Mett. Fil. Hort. Lips. p. 62.
Liebm. Fil. Mew. p. 86.
H a b . Brazil, Sellow (Presl).
Cumana, Columbia, Moritz,
n. 126. M i r a d o r ,
M e x i c o , Liebmann, Linden, n. 7 2 , and Galeotti, n. C302 (all in Herb.
Nostr.).
Guatemala, S&inner (in Herb. No.ilr.).—I
have n o well authenticated specimen
of this species in my herbarium, but Liebmann's specimens quite agree with the
figure and description o f Kunze. It is probably named intermedmm
as forming
the connecting link between some o f the pinnated vars. o f Bl. Lanceola and our
next species, Bl. gracile.
But it is indeed a much larger and stouter plant than the
former, has an obtuse base to the terminal pinna, and the lateral pinna; are more
fully developed, but not always oljtuse. It will be more difficult to distinguish it
from Bl. gracile.
11. Bl. gracile, Klfs.; "frond 4-5 inches pinnate 4-jugate,
pinnae an inch or an inch and a half long lanceolate subfalcate shortly petiolate the margin minutely denticulate, ter­
minal one 2 inches long on one side auriculato-adpendiculate,
sterile ones broader, stipes 4 inches long filiform chaffy at
the base, sori close to the costa neither extending to the base
nor to the apex sometimes interrupted on the terminal pin­
nule." Klfs. En. Fil. p. 158.—Fee, Gen. Fil. p. 73. Kze. in
Linncea, ix. p. 6. Mart, et Galeot. Fil. Mew. p. 51. Presl,
Epim. PI. p. 108. Kl. in Linncea, xx. p. 349. Brack. Fil.
U.S. Ewpl. Ewp. p. 129.
H a b . Brazil (Otto,
specimen above characterized b y Kaulfuss),
Selloiv,
BracJcenridge.
Peru, Pceppig (Kze. in Herb. Nostr., frond almost a foot l o n g
10-jugate), Mathews, n. 1 8 0 6 . B . Guiana, R. D. Scliomburgk, n. 1177 (Klotzsch
in Herb. Nostr.).
M e x i c o , Jurgenson.
Venezuela, Fendler,
n. 113.—Presl
gives several other localities, but I k n o w not what dependence is t o b e placed
upon them : for example, he refers " Gardner, Brazil, n. 1 8 4 , " hither, but I have
always considered that plant to be a form o f Bl. occidentale ; and on the other
hand, he brings under this species Galeotti's Bleclinum, n. 63.02, which I place
under Bl. intermedium.
Indeed, I find great difficulty in referring this group of
pinnated Blechna to the respective species o f the genus. Kaulfuss's description
of his Bl. gracile appears to m e to accord much better with Bl. intermedium
of
Link, than with what I receive from Germany as Bl. gracile;
and Kaulfuss
expressly says o f it, " Bl. Lanceola, S w . , et Bl. trifoliaium,
Klfs., forte nil
quam ha;c stirps, s t a t e juvenili," w h i c h he w o u l d hardly have said o f the
large, multipinnate forms, so often considered t o b e Bl. gracile.
Such, as it
seems to m e , may more correctly he considered as a passage to Bl. longifolium.
12. Bl. Fendleri, H o o k . ; caudex very slender creeping or