i a i â u .
CHARACTERS OF GENERA AND SPECIES.
T R IB E I . ( § 7 ) A D IA N T E Æ .
A d ia n tum , L in n oe u a Gen. P l. 782
(Adiantellum, / Apotomia, Pée ; Synechia, Pée ; Mesopleuria, ifoore, MS.)
Nyri mdu.siate, transverse marginal, reniform oblong or linear, continuous or interrupted ; the receptacles seated on the under
surface of tlie indusium, and proceeding from the apices of two or more converging venules. Indusium (inverted membranaceous marginal
lobe) venulose, sporangiferous beneath on the venules ; the receptacles therefore resupinate. Veins flabellately forked or forked from a
medial costa, the furcations repeated, venules parallel, free, continued in the fertile parts into the indusium.
Fronds coriaceous or herbaceous, simple, pinnately or podatcly divided, or supi'adecompouiid ; pinnæ often articulated, usually
dimidiate with the costa wanting. Stipes and rachis ebeneou.s. Rhizome tufted or short creeping—(Moure.)
1. Adiantum lunulatwn (Barm.)—Frond obloug pinnate, pinnæ alternate ratlier long-pctiolate membranaceous oblong—lunate
dimidiate below, upper margin lobed, truncate at the base, upperm<jst pinnæ cuneate, sori linear approximate, and often confluent, stipes
and rachis ebeneous glabrous, the latter often extended beyond the pimue and proliferous.— 7/ooi. Sp F i t ii. 11. Burm. F I Ind. p. 235.
Pteris lunata Betz Ohs. 11, p. 28. Adiautarn arcuatum Sw. Syu. Fil. p. 22. A. lunatam. cav. /bxe). 18U1, n, 676. Rheede Malab.
xii. p. .72, t. 40,
Very common througliout the Presidency, low mountainous tracts on the Pastern side, and from the sea level up to about 4,000
feet on the Western side.
PLATE No. I.
2 . Adiantum caudatmi (L.)—Fronds linear oblong elongated, attenuated, often rooting a t the apex and there bare of pinnæ,
pmnæ nearly sessile, alternate, rather thick membranaceous, dimidiato oblong, the upper base truucated and parallel with the rachis, the
upper margin more or less deeply lobed, the lobes often bifid soriferous villous in every part, witli rufous hairs or more or less glabrous,
veins generally prominent, involucres nearly orbicular or subquadrate, hairy or glabrous, stipes generally short, stout, and as well as the
rachis more or less clothed with fulvous chafiy hairs.—7/ooL Sp. Fil. ii. 13. Lhm. Maut. p. 308. A. incisum Forst. Ægypt. Arab. p. 187.
A. veshtxm Wall. Cat. n. 75. A.jiagellifepmn Wall. Cat. w. 76. A. hirsutmi Bory It. i. p. 198. A. capillis Gorgonis Webb, in Hook.
Js'iger Flox'a p. 192.
One of the commonest ferns in the Presidency, in similar localitie.s with the last.
PLATE No. IL
3. Adiantum hispidulum {^w.)—Frond narrow, flabellifonn, bipartito-pedately divided tripinnate, secondary pinnæ linear-
lanceolate acuminate falcate, pinnules chartaceous rigid close dimidiate oblongo-cuneate, olive brown when dry glaucous beneath striated
pubescenti-hirsute especially beneatii (often glabrous^ subspinuloso serrate, superior base truncate, apex obtuse, sori copious, small on the
upper margin and reaching to the ajiex (on almost every pinnule) 7-11 on eacli pinnule, in the sinus of the serratures, involucres orbicular,
cordate, hispid or glabrous convex, stipes triquetrous, ebeneous scabrous, rachis ebeneous hispid or pubescenti-scabrous. Hooh Sp. Fil.