The English flora - SeaweedAfrica

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No$toc.~\ AI.GM GLOIOCLADEjE. 399
expanded polymorphous plicato-undulate green.
p. 18.— TremeUa Nostoe, E. Bot. t. 461.
Gravelly soils, rocks, pastures, &c, common.
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Ag. Syst. Alg.
2. N. muscorum, Ag. (papillose Nostoe); frond polymorphous
mostly orbicular concavo-convex papilloso-tubercular subcoriaceous.
Ag. Syst. Alg.p. 19.
On calcareous rocks and the mosses which cover them. Appin, Capt.
Carmichael.— " Fronds gregarious, an inch or more in diameter, of various
forms, but inclining more or less to the orbicular, convex above and
concave in an equal degree underneath, of a firm dry consistence, and
made up of small roundish lobes or papillae. It bears a strong resemblance
to Collema crispum; but is much firmer and less gelatinous."
Carm. JISS.
3. N. vesicdrium, Dec. (vesicated Nostoe); " terrestrial, frond
vesicular cartilaginous full of viscid juice." Ag. Syst. Alg.
p. 19.
Road-side near Perth, G. A. IV. Arnott, Esq.— I have seen no specimens
of this, which I admit on my friend Mr. Arnott's authority.
4. N. folidceum, Ag. (foliaceous Nostoe); ca?spitose membranaceous
plicato-rugose somewhat erect. Ag. Syst. Alg.
p. 19.
On clayey ground, kept constantly damp by the oozing of water.
Appin, Capt. Carmichael.— " The fronds grow in circular tufts, 5—6 inches
in diameter. They are about an inch broad, membranaceous,
plaited, curled, wrinkled, of a dirty umber colour." Carm. JfSS.
5. N. 7nicrosc6picum, Carm. (minute Nostoe); fronds densely
aggregated very minute polymorphous immersed in a blackish
crust.
On exposed calcareous rocks, among mosses. Appin, Captain Car-
u
mickael. Wilderness," near t'lonmel, W. II. Harvey.— " Frauds gregarious,
from a line to one-twentieth of a line in diameter, ami varying
in form from globular to linear, of an olive or fulvous colour. In the
immature fronds there are no more than 1 I filaments." Carm. MSS.
— A curious and very distinct species, almost hyaline under the microscope.
(>. X. humijuswn, ('arm. (incrusting Nostoe); fronds very
minute BHDglobose fleshy hrownish-green, densely aggregated
in a widely spreading b! ratum.
On rocks exposed to the sea-spray, spreading over the naked earth.
Appin, Captain Carmichael.— " Frond not more than one-fourth of a
line in diameter, spreading over the naked soil in a dark-green crust,
firm, fleshy and rather opaque." Carm.
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2. Olive-green, tubmereed,
* Glob
7. N. priiiiiforno. Air. ( /'/" ni-shopt / \ uii.il t a. ln-d
globose or compressed coriaceo-gelatinotu smooth.
Alg.p* 19. Lyngb. Hydroph, Don. /. 68.
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Ag. Sytt.