Alga, by W. H. Harvey.) FLORA OF TASMANIA. 323 
Gen. XCII. MYCHODEA, Harv. 
(Harv. Lond. Journ. vi. p. 407. Kütz. Sp. Alg. p. 723.—Cystoclonii sp., J. Ag. Sp. Alg. ii. p. 306.) 
1, Mychodea carnosa (Hook. fil. et Harv. Lond. Journ. vi. p. 408; Kütz. Sp. Alg. p. 723).— 
Cystoclonium carnosum, J. Ag. ii. p. 309. 
Has. Georgetown. 
DrsrRrB. South coast of New Holland. 
2. Mychodea membranacea (Hook. fil. et Harv. Lond. Journ. vi. p. 408; Kütz. Sp. Alg. p. 723). 
—Cystoclonium membranaceum, J. Ag. ü. p. 309. 
Has. Georgetown. 
Disrris. South coast of New Holland. 
3. Mycbodea terminalis (Harv.); fronde tereti carnoso-membranacea decomposite ramosissima, 
ramis patentibus alternis sparsisve multifidis v. subdichotome divisis flexuosis, axillis rotundatis, ramulis 
subulatis simplicibus v. divisis, cystocarpiis ramulos (fere omnes) terminantibus. — Harv. Alg. Ersic. 
a. 413. 
Haz. Above Georgetown, in the Tamar, Gunn, W. H. H. 
I formerly confounded this species with M. membranacea, and have perhaps distributed it sometimes under that 
name. Except when in fruit, it is not always easy to distinguish between them without elose examination. The 
position of the cystocarps affords however a satisfactory character, as in M. membranacea they are sessile along 
the sides of the larger and smaller branches. It is a more slender and diffusely branched plant, with less of a pri- 
mary stem than M. membranacea. 
4. Mychodea disticha (Harv.); fronde lato-lineari ancipiti carnoso-cartilaginea distiche ramosa, 
nune subdichotoma, nune caule subindiviso ramis lateralibus alternis v. oppositis, ramis simplicibus v. 
iterum compositis ligulatis basi constrictis obtusis, ramulis minutis creberrimis marginalibus nunc longiori- 
bus ligulatis, cystocarpiis in ramulis immersis.—Harv. A/g. Ersic. Aust. n. 416. (Tas. CXCII. A.) 
Haz. East coast, Gunn. 
Frond 10-12 inches high, about a line in breadth, strongly compressed and two-edged, distichously branched, 
the main stem either twice or thrice forked, or nearly simple, and set with numerous long, strap-shaped, simple or 
slightly divided branches, which are patent or suberect, constricted at their insertion, and slightly narrowed to the 
point. The dranches and their minor divisions are closely fringed with short compressed ramuli, 2—4 lines long, 
occasionally intermixed with others of greater length.  Cysfocarps are imbedded in the tips of the ramuli. Colour, 
when dry, very dark. Substance rigid, very imperfectly adhering to paper.—In habit this plant more resembles 
Prionitis, but the structure of both frond and eystocarp is that of Mychodea.—PLATE CXCII. A. Fig. 1, a frond, 
nat. size; 2, ramulus, with cystocarp; 3, section of eystocarp; 4, section of frond :—the latter figures magnified. 
5. Mychodea hamata (Harv.) ; fronde carnoso-membranacea compressa siccitate rugulosa caespitosa 
a basi ramosissima, ramis dichotome multifidis basi et apice attenuatis nunc nudis nunc ramulis lateralibus 
plus minus onustis, axillis omnibus rotundatis, ramulis lateralibus patentibus v. divaricatis seepissime re- 
flexo-hamatis acutis, cystocarpiis ad latera ramorum sessilibus cornutis.—Harv. Alg. Exsic. Austr. n. 415. 
Has. Georgetown and Port Arthur. 
DrsrarB. South coast of New Holland. 
This forms large, loosely interwoven, globose tufts, on stones and Alge, near low-water mark, at the mouth of 
the Tamar. The tufts spring from matted, branching root-fronds. The erect fronds are 6-8 inches long, angularly 
compressed, about a line in diameter, rather succulent when recent, shrinking in drying, and becoming furrowed ; 
