II [l
li II II
!S attached to the surface of the frond.
LA]
(1)
[B]
[A]
(!)
(2)
LB!
Receptacles normal, i. e., the Spore-c
punctiform.
linear, transverse.
[o 3] Receptacles short, transverse or arcuate on the venules, sub-paraUol ryith the midrib or
margin.
Sori non-indusiate.
Sori parallel with the venation, oblique (i-avely sab-parallel) to the midrib, oblong linear or
more or less elongated, sometimes compound.
(а) Sori indusiate, lateral or sub-lateral on the veins.
(б) Sori naked or spuriously indusiate, dorsal on the veins,
(a) Receptacles linear, vaiiously reticiilato-auastoinosecl.
(13) Receptacles linear, simple or forked, (sometimes short linear) i e., oblong.
(c) Receptacles oblong, contiguous, parallel, the Spore-cases becoming confluent and simulating
a broad maternal sorua (spuriously indusiate.)
Sori punctiform, (lurely in § 15, sub-oblong, or by confluence more or less elongate.)
(a) Sori naked, i. e., without true indusia ; (fertile fronds sometimes contracted with involute
margins—spuriously indusiate.)
(b) Sori indusiate, i. e., with superior indusia.
(a) Indusium roniform or peltate, attached by the sinus or centre, free at the margins,
(fertile fronds sometimes involutely contracted.)
(J3) Indushim rotuodote, attached tranavemel, to the vein by its base, the matgins
free.
(c) Indnsium roundish or oblong, adherent at the base and margins, opening in front,
t. e., exteriorly. ’
(c) Sori involúcrate, i. e., with inferior indusia.
(a) Indusinm or iuvoluore distinctly within the margin ot the frond, forming an entire
lobed or fimbriated cup i Sori therefore within a dorsal cup.
Mnp more or h a d.Uqnds wrtical, marly eomphte, narrow, ,pore-ca,ee crowded, eemlc or sub-
eeuUe, oblique-lateraUy eompretted, or tnhwompretKd, hurainy horkontaUy.
Sori involúcrate, i. e., indusia inferior, (receptacles elevated.)
Fructifications dorsal.
Sori naked, i. e., without iudusia ; (receptacles elevated.)
Ring horizontally or rarely obliquely transverse complete, spore-cases sessile or subsessile
usually vertioaXly compressed, bursting longitudinally, i. e., vertically.
al, i. e., spore-cases girt by the ring.
Sorislorsal i (fronds rigid opaque with oligocarpus Sori, and globose-pyriform, spore-cases.)
Sori eitrose-marginal (fronds nsnally pellucid membranaceous, with polyoarpous sori and
lenticular spore-cases.)
Ring apical, i. c., sporemases crowned by the convotgent Stri» of the ring=radiale strialc at
the Apex.
S tn » united at the Apex, without any vacant space, (spore-cases attached laterally ;) scand-
ent plants.
Stri» disjoined, forming an orbicular apical vacuity, (spore-cases attached ba,saily ■) dwarf
herbaceous plants.
Ring rudimmtary. or incomplete [wanting om third or more:) rery broad, flat obliquely yen
tical; spcre-cases sessile or sub-sessile, globose.
Cheilauthe», § 9. Pteridese.
§ 10.
Menhcie;
§ 11.
Asiflenie».
§ 12.
Ilemionitidese.
§ 13. Gymnogramraeie,
§ 14.
Platyloiaeie.
§ 15.
Polypodie
§ 16.
Aspidieie,
§17.
§ 19.
Peraueme®.
Tribe 2.
CyaTHEINEsB.
§ '• Cyathe®.
, §
Tribe 3.
G l e i c h e n i n e . « .
Tribe 4.
T r ic h o m a n in e .b .
Tribe 5.
ScniZsEINEsE,
§ 1-
Lygodie®.
§2.
Schiz®ese,
t t
(Aquatic Alumal proliferous ferns, with contracted fertile fronds.)
Spore-cases two valved, bursting vertically at the apoi. Ring rudimentary, obliquely trana-
verse near the apex.
Sporo-casea without a jointed ring.
[A] Fructifications dorsal on normal fronds, (vernation circinate or incurved.)
(1) Sori-oblong distinct, longitudinally bivalved.
(o) Spore-cases free, crowded in two opposite linear series.
(B) Spore-cases concrete, in two opposite linear series.
[B] Fructifications marginal, on rachiform fronds or branches, (vernation straight.)
bYOOPODiLBB.—Acrogenous plants with arillary radical or petlolar one-four or many-celled sporecases.
* Spore-cases one-three-celled, in the axil.s of the Stem-leaves or bracts.
Stems leafy ; Spore-cases one-three-celled.
Tribe 6.
C e e a t o pt e r id u íb -e .
Tribe 7.
OsUUNDINE.£a
Order.
MARATTIACE^.
Tribe 1.
M a b a tu s E í í : .
-—‘•endesB.
. 2-
Marattiea.
Order.
OPHIOGLOSSACE.E.
Order.
LYCOPODIACE^
LYCOPODIE.fi.