The English flora - SeaweedAfrica

Frusiuli".] ALGjE DIATOMACE^E. 407
equal in length and breadth.
—
Ag. Syst. Alg. p. 4. Lyngb.
Hydroph.Dan.p. 179. £. 61.— Conferva fioccidosa^ Dilliv. Conf.
t.2%. E. Bot.t. 1761.
Fools, ditches and slow streams ; parasitic upon various Conferva.
Frequent in Spring and Summer.—Of a pale transparent green under the
microscope. 1 he joints vary in their relative length and breadth, even
in the same filament.
— —
—
Frustida fasciculate orflabeU'tform.
12. D. crystdllbium, Ag. (chrystalline Diatoma); frustula
linear elongated obtuse. Ag. Syst. Alg. p. 3. Echinella fasci-
culata, Lyngb. Hydroph. Dan. p. 210. t. 70.
Parasitic on various filiform Atgce, in the sea. Devonshire, Mrs.
Griffiths. Appin, Capt.Carmichael. Spring.— Much larger than the two
following species. The frustula are of a pale yellow colour, not attenuated
at either extremity, and when dry more or less hyaline and glistening
in a very beautiful manner, like spun glass.
13. D.fulgens, Grev. (glittering Diatoma); frustula truncate
golden-yellow arising inarlabelliform manner from a chrystalline
often elongated base. Exilaria fulgens, Grev. Crypt. Fl.t. 291.
Parasitic on various filiform marine Alga; Appin, Capt. Carmichael.
Spring and Summer.— According to the views of Agardh, this plant
must be a Diatoma ; yet the base, on which the frustula are placed, is
often so much elongated, as to represent a broad stipes.
14. D. fasciculdtum, Ag. (fasciculated Diatoma) ; frustula
linear somewhat acuminate at each extremity.
p. 3.
—
—
Ag. Syst. Alg.
Echinella fasciculala, Grev. Crypt. Fl. t. IS.jigs. 1—3.
Parasitic on the filiform marine Alga, frequent. Spring and Summer.
— Of a pale dull-yellow. The frustula are attached to a minute chrystalline
base.
15. D. truncation, Grev. (trioleate Diatoma); frustula linear
truncate at the extremity
(synops. p. 37.)
Exilaria trunniln. dnc. Crypt. Fl.
E.fas< iculata, 3. 1. own
led me formerly t" separate if, ud I have not intii.it.. s.»«n reason* t.. . h
them. A patient Investigation . Bruith, mrald i-- neceeeerj to determiue Ihe qoettkm.
—