The English flora - SeaweedAfrica

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'388 ALGvE GL040CLADEJE. [Draparnaldia.
whorled ramuli, consist of a single tube. The articulation of the
former is also probably spurious and merely a darkening or
intumescence, caused by the egress of so many ramuli from
the same point. This structure brings it so near to Mesogloia,
that no essential difference remains, excepting in the disposition
of the radiating branchlets." Carm. MSS.
1. B. vdgum, Ag. (cylindrical Batrachospermum); frond subdichotomous
cylindrical equal, apices of the branches incrassated.
Ag. Syst. Alg. p. 52. Lyngb. Hydroph. Dan. t. 64.
In alpine bogs and lakes, common.—Varying in colour from dullgreen
to bright aeruginose or even blue.
2. B. monilijorme, Ag. (moniliform Batrachospermum); irregularly
branched, branches moniliform, apices attenuated Ag.
Syst. Alg. p. 53.— Conf. gelatinosa, Dillw. Conf. t. 32. E. Bot.
t. 689.-/3. detersum^ Ag.— Conf. atra, Dillw. Conf. t.ll.E. Bot.
t. 690.
In subalpine streamlets.— Scarcely differing from the former, except
by its rather more distant whorls. Colour varying from grayish-green
to black, occasionally changing to purple in drying. Capt. Carmichael
found an extraordinary plant at Appin, which he considered a distinct
species, and called B. prpliferum j but it is probably only a variety of
the present. He thus describes it : " Fronds solitary, or in small clustery
j—2 inches long, irregularly branched; branches divaricate, curved
or flexuose, opaque and very dark-coloured, beset with short ramuli,
which issue out from the joints among the whorls of eccentric filaments,
and are themselves beset with whorls: colour gray." Carm. MSS.
87. Draparnaldia. Bory. Draparnaldia.
Frond diorganous ; main filaments gelatinous, hyaline, emitting,
at the joints, pencils of coloured ramuli—Named in hon-
ourof J. P. H. Draparnaud, a French Botanist and Algologist.
This beautiful genus is closely related to Chcetophora, from
which it differs in the absence of a firm gelatine and confer void
habit.
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1. D. plumosa, Ag. (feathery Draparnaldia); pencils of
branches linear-lanceolate acute. Ag. Syst. Alg. p. 58.— Conf.
lubrica, E. Bot. t. 2087.
In streamlets and wells, frequent.
2. D. glomerdta, Ag. (clustered Draparnaldia); pencils of
branches ovate obtuse patent. Ag. Syst. Alg. p. 58. Conf.
mutabilis, Dillw. Conf t. 12. E. Bot. t. 1746.
In streamlets and wells, frequent.— It scarcely differs specifically from
the former.
3. D. tenuis, Ag. (slender Draparnaldia); ramuli simple subfasciculate,
primary filament partially coloured. Ag. Syst.
Alg. p. 57.
C. protensa,
Conf. lubrica, Dillw. Conf. t. 57.
Dillw. Conf t. 67, and C. exigua, t. D. (status junior).
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