328 FLORA OF TASMANIA. [Alge, by W. H. Harvey. 
angustatis, terminalibus attenuatis filiformibus acutis, margine nunc simplici nunc processibus proliferis 
subpinnatis onusto.—Harv. Alg. Exsic. n. 430. i 
Var. 8. prolifera ; segmentis majoribus e margine frondes pinnatas emittentibus. (Tas. CXCV. A.) 
, Has. Georgetown, Mrs. Fereday, W. H. H., ete. 
Stipes an inch or more long, terete, subsolid, twice or thrice forked; each branch passing into the cuneate base 
of a flattened or compressed, much divided, dichotomous, flabelliform frond. The lower segments are about 3 inch 
wide, the upper about a line, and the terminal ones not a quarter of a line in breadth. Sometimes the branching is 
perfectly regular and dichotomous. In other specimens the lower, and sometimes the upper segments, throw out 
from their margin very numerous secondary fronds, which are more or less regularly dichotomous. Thus the general 
frond becomes densely and intricately branched. The colour is a deep rosy-red. The substance soft and lubricous, 
and the plant closely adheres to paper in drying.. It belongs to the section of the genus called Gymnophled, and 
may range next to N. dichotoma.—PLATE CXCV. 4. Fig. 1, a frond, the naf. size; 2, section, magnified. 
2. Nemastoma ? densa (Harv.) ; fronde fuscescente teretiuscula dichotome v. vage ramosa, ramis 
primariis crassis parum divisis, secundariis filiformibus gracilibus quaquaversis creberrimis dichotome 
multifidis ramos primarios omnino vestientibus, divisuris omnibus divaricato-patentibus axillisque rotun- 
datis, ramulis ultimis setaceis obtusis.—Harv. Aly. Eesic. n. 431. 
Has. Georgetown, on the mudflats, Gunn, W. H. H. 
Fronds 6-8 inches long, excessively dense and bushy. The main frond is upwards of a line in diameter, and 
sparingly branched in a dichotomous or irregular manner ; its divisions very patent, and somewhat flexuous. This 
frond throws out, throughout its whole length, and directed to every side, a vast number of slender, many times 
dichotomous, filiform, divaricating branches, so that the general frond becomes excessively bushy. The lesser 
branches are greatly more slender than their primaries, and their terminal lacini] are not thicker than hog's- 
bristle. Every axil is very wide, and every ramulus squarroso-patent. The colour is a dull reddish-brown. The 
substance soft and gelatinous. The filaments of the periphery are nearly free, and their cells eylindrical.—I am by 
no means assured of the genus to which this plant properly belongs; and perhaps it would be better placed in 
Nemaleon, or in the neighbourhood of that genus. 
Gen. CIII. HOREA, Harv. 
(Harv. in Trans. R. I. Acad. vol. xxii.) 
Frons carnoso-membranacea, plano-compressa v. subteres, e stratis tribus cellularum composita ; 
stratum medullare e celulis maximis inanibus demum sepe ruptis; intermedium cellulis pluriseriatis 
minoribus coloratis; corticale filis moniliformibus verticalibus dichotomis muco cohibitis formatum. 
Favelle intra pericarpium proprium apice spinis coronatum poro pertusum ad placentam basalem affixz, 
is arachnoideis laxe circumdate, sporas conglobatas angulares foventes. Tetraspore sparse, cruciatim 
deis, 
1. Horea speciosa (Harv.); fronde lato-lineari applanata decomposite pinnata, ramis elongatis 
ambitu lanceolatis sub-bipinnatis, pinnis pinnulisgue oppositis patentibus, pinnulis linearibus obtusis nunc 
apice cirrhoso-hamatis, cystocarpiis sepius marginalibus (paucis) apice spinoso-coronatis.—Harv. Alg. 
Ezsic. n. 439.—(Ta. CXCIV. A.) ae 
Has. Mouth of the Tamar, rare, W. H. H. 
DisrarB. Also found at Western Port, Victoria, W. H. H. 
Frond 12-16 inches long, 
division being distichous, . The 
and as much in the expansion of the branches; three or four times pinnate, every 
principal branches are nearly half an inch in width, and so strongly compressed as 
