244
ACROSTICHTJM,
§
POLYBOTRYA.
sterile fronds with close c o m p a c t pinnae 1-2 inches l o n g
less than \ an inch wide from a broad always sessile base
oblong-acuminate subdentate, lowest ones very small closeplaced orbicular; fertile fronds rather smaller, the pinnules
1 - 1 4 inch long linear petiolate truncate or subhastate at the
base.
Hab. AVest tropical Africa : Cameroon Mountains, alt. 4 0 0 0 feet, 0. Mann.—
This is, at first sight, more unlike the ordinary form of A. sorbifolium than any o f
its varieties; yet I will not venture to pronounce upon this as decidedly distinct.
T h e pinna; are very numerous, close-placed in the sterile frond, more distant ( o n
account of their narrowness) in the fertile frond, and in the latter truncate or
even subhastate at the petiolated base.
§ 3. P O L Y B O T R Y A . — F r o n d s dimorphous, generally ample and very
compound.
The fertile pinnules
much contracted and sometimes soriferous on both sur­
faces.
Veins simple or forked.-— Gen. Polybotrya, H. B. K.
• 9 8 . A . (Polybotrya) caudatum,
H o o k , (not Acr.
caud.,
H o o k . I c . PI. t. 215) ; caudex stout scandent 1 5 - 2 0 feet
l o n g often 1 inch broad, stipites elongated as thick as the
finger at the base and there paleaceous with subulate b r o w n
falcate scales an inch long, fronds from near the sum­
mit of the caudex ample subcoriaceous several feet l o n g ;
sterile ones tripinnate, primary pinnce 1^ foot long distant
long-petioled often 1 foot broad, secondary ones 4 - 6 inches
long petiolulate deeply pinnatifid or pinnate with ovate or
falcate entire or serrated lobes, ultimate pinnules l-g-2 inches
long ; fertile fronds ample bipinnate, pinnules petiolate 2 - 4
or more inches long 1 | line wide linear more or less irregu­
larly pinnatifid with short o b l o n g segments, terminal portion
caudate all over soriferous or with a ridge on the b a c k which
is sometimes sterile.—Polybotrya, Kze. in Linncea, ix. p. 23.
Fee, Acrost. p. 72. t. 34 (very yood).
Psomiocarpa, Pr.—•
Var. / 3 ; rachis, costee, and veins ferruginously stellato-pubescent and villous. P. pubens, Mart. Fit. Bras. p. 87. t. 25.
Kze. in Linncea, ix. p. 23.
H a b . Peru, Pwppig, Spruce, n. 4 6 3 4 , 3 8 8 0 . Ecuador, T u m a c o , Hindes, Seemann.
N e w Granada, Arima, Purdie,n.
12. Panama, Sutton Hayes.—Var.
0.
Peru, Pwppig, in Herb, nostr.
A m a z o n , Martins.
Guiana, Schomburgh,
Le
Prieur.
Brazil, Spruce, n. 2 1 1 6 . — T h e ample panicle of very l o n g caudate pin­
nules are mainly characteristic o f this species. The P. pubens of Kunze and
Martius appears to me to b e a hairy var. of the s a m e ; the fertile frond is iden­
tical. In both the disk of the upper side is more or less free of capsules.
99. A . (Polybotrya) nutans, H o o k . ; " caudex very long
scandent and radicant, stipes moderately large paleaceous,
frond triangular-oblong subglabrous ; sterile frond bipinnate,