288 FLORA OF TASMANIA. [Alge, by W. H. Harvey. 
with branches 10-12-14 inches in length; stem and branches not thicker than hog's-bristle. Throughout the entire 
length of the branches innumerable receptacles stand out, like spines, at right-angles with the branch. They are 
perfectly sessile, about 1-2 lines in length, cylindrical, but tapering slightly to the subacute apex, so as sometimes 
to be nearly subulate. In the varieties of S. comosus the tapering is in the opposite direction—to the dase. 
Gen. XVI. BELLOTIA, Harv. 
(Harv. in Tayl. Ann. Nat. Hist. 1855, p. 332.) 
Frons filiformis, solida, umbellatim ramosa, apicibus ramorum fasciculato-comosis. Receptaculum 
in quoque ramo unicum, cylindraceum, mediam partem rami circumvestiens, e paranematibus simplicibus 
verticalibus dense stipatis constitutum. Spore ad paranemata lateraliter dispositee, oblongee, transversim 
striate. 
1. Bellotia Eriophorum (Harv. An. Nat. Hist. (1855), xv. p. 332). (Tas. CLXXXVIL) 
Haz. Georgetown, rare, Henty, Gunn. Derwent (a fragment), Oldfield. 
DisrarB. Port Phillip and Western Port, Victoria, W. H. H. 
Root clothed with velvety fibres. Stems many from the same base, 1-2 feet long, twice as thick as hog’s- 
bristle, terete, rigid, somewhat horny, twice or thrice umbellately compounded.  Umbels of ten to twenty or 
thirty rays or more, from 3-4 or 5 inches apart; the bases of all the rays tomentose, the rest bare and quite 
smooth. pices of all the branches crowned with a very dense spherical tuft of brown filaments, from 4-2 of an 
inch in diameter. ` Receptacle cylindrical, developed round each branch in its middle or upper portion, and formed 
of very densely-packed, simple filaments (paranemata), vertically issuing from all sides of the branch, and whorled 
round it. This receptacle begins to be formed on the upper half of all the young branches above the middle, and: 
extends, at first, nearly to the commencement of the apical tuft; but as the growth continues, the barren portion 
of the branch above the receptacle considerably elongates, and the receptacle, in a full-grown branch, is removed to 
nearly the middle region, where it forms a sausage-shaped swelling nearly two inches in length and thrice the 
diameter of the barren part of the branches. The paranemata are quite simple, articulated, cylindrical, their cells 
three or four times as long as broad, filled with pale-olive endochrome. Spores linear-oblong, sessile on both sides 
of the paranemata, alternate or secund. Substance of the stem and branches rigid; of the apical tufts soft, and 
when young somewhat gelatinous. A cross-cutting of the stem shows a firmly-cellular substance composed of 
minute polygonal cells, set in lines radiating from a central point. 
The fertile portion of the branches varies considerably in length in different specimens. In some the receptacle 
is developed only in a minute degree, in others it extends nearly the full length of the branch. The generic name 
is bestowed in honour of Lieut. Bellot, of the French Navy, who was lost in one of the Searching Expeditions for 
Sir J. Franklin. It differs remarkably in ramification and habit from others of this order.—PraTE CLXXXVII. 
Fig. 1, the plant, the natural size ; 2, cross section through a receptacle; 3, spore-threads from the same :—both 
figures magnified. 
Gen. XVII. CARPOMITRA, Kitz. 
(Kütz. Phyc. Gen. p. 343 ; Sp. Alg. p. 569; J. Ag. Sp. Ale, i. p. 177.) 
1. Carpomitra Cabrerz (Kütz. Phyc. p. 343; Harv. Phyc. Brit. t. 14; J. Ag. Sp. Alg. i. p. 177). 
—Fucus Cabrere, Clem. ; Turn. Hist. Fuc: £. 140. 
Haz. Port Arthur, W. H. H, 
Disrgrs. South and east coasts of New Holland. New Zealand. Coasts of Spain.. South of Eng- 
land and Ireland. : 
