CRYPTOGAMIA. ALG. Fucus. D. (1) Flat, mid: 
ribbed, OPAKE. 
ments. From these runners, short branched shoots. are produced, 
without order; slender at the base, but broader upwards, jointed 
and much matted together. Substance cartilaginous : colour 
fine red purple or green. Stems oblong and flatted, consisting 
sometimes of only a single:joint; in.others there is a succession 
of 2 or 3 of these oblong joints resembling a necklace with 
oblong flatted beads, and in others again other joints are sent off 
from the sides of these, and sometimes 2 from the end. Its — 
colour fine pinky purple; some of the joints now and then are 
of a bright green. Seeds in the substance of some of the ex- 
treme joints, like grains of fine purple powder. Licutroor. 
2 
Ulva articulata B Hups. Fucus verticillatus. var. repens. 
Bot. arr. ed. ii. Sea rocks washed by the waves, in Prestholm 
Island. Ditt.—and near Musselburgh. Licurr. [On the 
stems of the F. digitatus, frequent. On the naked rocks at St. 
Michael’s Mount Pier. Mr, Sracxouse.] August. 
D. (1) Flat, midribbed, opaxke. 
_ F, Plant, flat, forked, mid-ribbed, serrated with teeth : 
fructifications at the ends of the, branches, tu- 
Stackh. 1\-Velley. 1-H. 0%. xv. 9. 1—Bast. ii. 11, 3- 
, Two feet high or more, but it varies much in size. Sub- 
stance hard, leathery. Colour green to yellowish, or olive, 
blackish when dried, but still in some measure pellucid. Stem 
flat, pervading the whole length of the leaves, which are ob- 
long, flat, edges set with teeth of various sizes. Ithas no aif 
vesicles, but little pencils are often found on both surfaces, and 
tubercles heating. seeds, filled with woolly matter, in the sub- 
stance of the leaf, either scattered, or more cellected at the ex- 
tremities. Gmetin fuc. 57. When in fruit the extremities 
are pale yellow, and the tubercles brown. Mr. Stackhouse. 
This Fucus has two kinds of fructification sufficiently obvious 
by the aid of a common eye-glass. As far as the mid-rib per- 
vades the leaves you may see globular granulations scatterc - 
within the substance of the plant sending out pencils of threads 
upon the surfice. Where the mid-rib ends, towards the termi- 
nation of the leaves, the surface is set thick with tubercles, each 
tubercle the section of a sphere, with an opening at the top 
through which issues a mucilaginous fluid containing oblong 
substances, probably the seeds ; but so small as to require 2 
pretty high magnifier to be distinctly seen. 
_ Rocks and stones in the sea. e Pp. Jan.— Dee. 
Var. 2. Leaf without serratures, or only a few at the base. 
Huns. 576. A foot long, at least an inch broad. Edge une- 
qual, less remarkably serrated. Doopvy im R. Syz. 42. I have 
