187. confervoides i frond filiform, cartilaginous, frregularly branched or subsimple
; branches elongate, slender ; tubercles scattered, sessile, roundish,
subacute. (T ab . LXV.)
188. e re c ta ; fronds many from a common disc, short, erect, filiform, sparingly
branched ; tubercles globose, clustered ; tetraspores contained in terminal,
lanceolate, pod-like ramuli. (T ab. CLXXVII.)
LVIII. HYPNEA.
189. p u rp u r a s c e n s ; purpfrsh-red, excessively branched, b u sh y ; branches
alternate; ramuli moltifid, a tten u a te ; tubercles immersed in the ramuli
(Tab. CXVI.)
Order 12. CRTPTONEMIACEÆ.
LIX. GBATELOUPIA.
190. filio in a ; frond n a n w , tapering, once or twice pinnated; pinnæ flexuous
(T ab . C.)
LX. GELIDIUM,
191. c om e um ; distichous; branches linear, narrowed at each end, pinnate or
bi-tri-pinnate; pinnules opposite or alternate, patent, obtuse. (T ab . L III.)
192. cartilag in eum ; several times pinnated ; pinnæ and pinnulæ erecto-patent,
with rounded axils, linear, obtuse. (T ab . CCCXXXVII.)
LXI. GIGABTINA.
193. p is tilla ta ; frond compressed, stipitate, flabellately branched; branches repeatedly
forked, with rounded axils, naked or pinnated with short, horizontal
ramuli; tubercles solitary or in pairs, on the ramuli. (T ab . CCXXXII.)
194. a c ic u la ris ; cylindrical, irregularly branched, between pinnated and dichotomous
; branches divaricating ; ramuli few, recurved, subulate ; tubercles
scattered on the branches. (T ab . CIV.)
195. T e e d ii; frond flaccid, flattish, linear, acuminate, repeatedly pinnate ; pinnæ
horizontal, set with horizontal, spine-like ramuli. (T ab . CCLXVI.)
196. m am illo sa ; frond fan-shaped, dichotomous, plane, channelled; segments
wedge-shaped; tubercles roundish or ovate, pedicellate, scattered over the
disc of the frond. (T ab , CXCIX.)
LXII. CHONDBUS.
197. C risp u s; frond stipitate, thickish, cartilaginous; the segments wedge-
shaped, variable in breadth ; apices emarginate ; axils obtuse ; sori elliptical
or oblong, scattered. (T ab . LXIII.)
198. N o rv é g ie n s ; frond linear, dichotomous, flat, duU re d ; axils p a te n t;
apices rounded ; favellidia minute, imbedded in the substance ; uemnthecia
scattered over both surfaces. (T ab . CLXXXVII.)
LXIII. PHYLLOPHOEA.
199. m b e n s ; stipe short, expanding into the cuneate base of a n a n w , obscurely
midribbed, rigid, blood-red frond, which is repeatedly proliferous ;
tubercles scattered over the surface, wrinkled. (Tab. CXXXI.)
200. membranifoUa ; stem filiform, elongated, branched; branches expanding into
broadly wedge-shaped, or fau-shaped, dichotomous dull purple laminæ ; tu bercles
on short stalks, rising from the stem or the laminæ. (T ab . CLXIII.)
201. Brod ise i; stem fihfonn, branched; the branches terminating in forked,
membranous leaflets, proliferous at the extremity; tubercles sessile on the
tips of the segments. (T ab. X X .)
202. p a lm e tto id e s ; root a wide-spread disc; stem filiform, expanding into an
oblong or cuneate, simple or once-forked, rose-coloured frond; sorus
solitary, transverse, elliptical, immersed below the apex of the frond.
(T ab . CCCX.)
LXIV. PEYSSONEL IA.
203. D a b y i ; frond membi'anaceous, orbicular or lobed, attached by the whole
of its under surface. (T ab . LXXI.)
LXV. GYMNOGONGEUS.
204. Griffithsise; dichotomous, fastigiate; warts surrounding the stem.
(T a b . C V I I I .)
205. p lic a tu s ; homy, dark purple, entangled, wiry, irregularly branched;
branches of various lengths, forked, with very wide axils; warts oblong,
irregular, scattered. (T ab . CCLXXXVIII.)
LXVI. POLYIDES.
206. ro tu n dn s. (TaB. XCV.)
LXVII. EUECELLAEIA.
207. fa s tig ia ta . (T ab . X C IV . and C C C L V II. A.)
LXVIII. DUMONTIA.
208. filifo rm is; frond undivided, attenuated to each extremity, pinnated with
long, simple,^tapering branches. (T ab . L IX . and C C C L V II. B.)
LXIX. HALYMENIA.
209. lig u la ta ; frond compressed or fiat, irregularly dichotomous or palmate;
the segments attenuated. (T ab . CXII.)
LXX. GINANNIA.
210. fa r c e lla ta ; cylindrical, tender, uniformly dichotomous; apices obtuse.
(T a b . L X IX .)
LXXI. KALLYMENIA.
211. r e n ifo n n is ; stipe short, terete, suddenly expanding into a roundish or
irregularly cleft, blood-red frond. (T ab . X I I I .)
212. D u b y i; stem compressed, gradually expanding into an obovate or cuneated,
duU red lamina. (Tab. CXXIII.)
LXXII. IBID.SÍA.
213. e d u lis ; frond obovate. (T ab. X C V I I .)
LXXIII. CATENELLA.
214. Opuntia; root creeeping; stems vaguely branched; internodes lanceolate
or eUiptical, four times as long as broad. (T ab . L X X X V I I I .)
LXXIV. CBUOBIA.
2 1 5 . p o llita . (T ab . C X V II.)