Diplazium

?]
&4fznd+
THE NEW YORK BOTANICAL GARDEN
Herbarium of George S. Jenman
PRE8ENTED BY MR. D. O. MILL8, 1903
JAMAICA
"ispiSauM (Diplazium) tenebbosum, Jenm., a. sp.
Rootstock erect or decumbent, finger - thick,
bat apparently much thicker from the base*
of former «tipite* adhering; the itrong, wiry root*
extrading between, densely clothed at the apex with
linear dark-brown icalei; stipites contiguous, a ipan
i or ipore long, rery dark, puberulous, channelled«
I densely clothed like the rootstock; fronda erect,
If to 2£ feet long, f to 1 foot wide pinnate, the
acaminate apex pinnatifid, chartaceons, glabrous,
dark, dull, brownish-green; rachil dark, paberulou*,
channelled; pinna ipreading nearly horizontally, a
dozen, more or leu, to a lide below the lobed uppej
I part, alternate, oblong-lanceolate, the aeisile base
truncate, roundly bat obliqaely-lobed to a quarter or
one-third the depth, the acaminate apex serrate,
6 to 8 inchei long, 1£ to 1J inch wide, Maced apart,
the lower entire one* distant and reduced; lobe«
\ inch wide; reins open, few, rnnning in fascicle* to
the margins; sori 2 to 3 lines long, confined to the
base of each pair of the inferior reinlets, often double;
involucres narrow, rery dark brown. Jamaica. Id
damp forest* of the middle or npper mountain regions.
Communicated by Mr. Hart. Differ* from all the
larger simply pinnate specie* in nearly all it* par*
ticulara, especially in the lobing of the margin*,
I character of the renation and tori, and the relatirely
i «lender ligneous rootstock deroid of fibre. Q, 8.
Jen*»».	.
NEW YORK BOTANICAL GARDEN
02005567