■■•ii
■- I'l
Ilab. On wall's, trees, &c., Cheshunt : A . H. H. Appin :
Captain Carmichael.
Although this species is somewhat peculiar in its developement,
not the slightest necessity exists for its removal
from the many-cysted species of the genus Hæmatococcus. I t
is impossible to make too rigid an examination and analysis
of plants of this order, but the utmost care is required in
forming a right estimate of the value of the differences disclosed
by a rigorous examination, for if every small difference
be too highly regarded;, we shall soon have genera as numerous
as species. The figure given in this work is chiefiy
taken from tha t of Meneghini’s “ Monographia.”
18. H æmatococcus miceospobus Hass.
Plate L X X V I . Fig. 8.
Char, Cells angular, adherent to each other, and each occupied
with usuallg fo u r minute slightly oval green granules.
Hah. Uckfield Sandrocks, Sussex : Mr. Jenner.
This is a distinct enough little species. I have only seen
the specimens of Mr. Jenner, who sent it me as “ Palmella
protuberans.” The granules are always enclosed in cells,
which are strongly adherent to each other, and never separate.
19. H æmatococcus minutissimus Hass.
Plate L X X V I . Fig. 9.
Char. Globules spherical. Granules excessively minute,
green.
Hab. Mixed up with H. furfuraceus. Ire lan d : Mr.
Moore.
The granules in this species are even smaller than those of
Hæm. microsporus, and are much more numerous in each
cell than in tha t species.
/
50. PRO TO C O C CÜ S Ag.
Char. P lan t consisting o f aggregated, naked globules, filled
with minute granules, and sessile on a gelatinous transparent
mass.
Derivation. From irpmros, fir s t or primary, and k o k k o s ,
fr u i t ; from its elementary organization.
“ Agardh states that the globules of his Protococcus are
perfectly simple, or consist merely of a hyaline cellule enclosing
an uniform coloured mass, and he regards our British
plant as a different species, belonging to Hæmatococcus.
Having minutely examined a specimen from Agardh himself,
submitted to me for that purpose by Dr. Greville, and finding
exactly the same compound structure as in our British
specimens, I do not hesitate to pronounce the two plants
identical. ” — Harv.
1 . P e o t o c o c c u s n i v a l i s Ag.
Plate L X X X . Fig. 2.
Char. Globules exactly spherical, very minute, fine purple-
red. Gelatinous mass pale, spreading.
Grev. Crypt. Fl. t. 231. ; Ag. J e . Alg. Furop. t. 21., and
Hæm. Grevillii Ag., 1. c. t. 23. ; Harv. L c. p. 395. Palmella
nivalis Hook., in P a rry ’s 2nd Voy. App. Uredo
nivalis Bauer, in Journ. of Science and Arts, vol. vii.
p. 222. t. 6.
Hab. On the borders of the lake of Lismore, spreading
over decaying leaves, &c. : but in greater perfection on
the calcareous rocks, within the reach of occasional inundation
: Captain Carmichael, Near Miltown Malbay,
on schist ; Limerick, on limestone ; and about Dublin
on granite. In most cases slightly inundated. — W. H.
Harvey,
This curious little plant, which, under the name of Red
Snow, has excited so much Interest among botanists, is usu