— 253 — 
Varietali gracili affinis, dilìert ramis fere oninino levibus, foliis 
rigidioribus, obscurioribus, acuiiiis dentalis, receplaculis foemineis obco- 
nicis, spinulosis, compressis vel subtriquetris. 
Ilab. Cavile, ins. Luzon in arcip. Philip, (leg. C. Margacci). 
Var. eurypìiylla Grunow. — loc. cit. p. 44. 
Ramis brevissime muriculatis, foliis laliusculis, minute denticulatis, 
subcoriaceis, nigro-fuscis, receplaculis masculis inermibns. 
Ilab. Porto S. Giacinto, ins. Ticao in arcip. Philip, (leg. G. 
Margacci). 
161. SargassMM polypliySluaa J. Ag. — Sp. I, p. 308. 
Var. fìs«$ì-jfblìa Grnn. — ■ iti Piccone Alghe della Vettor 
Pisani p. 44. 
A S. polyphyllo dilfert tantum foliis saepe furcatis. 
Hab. Honolulu, ins. Hawaii (leg, G. Margacci). 
162. ^arg'as.^am pf^&eudo-cystocarpum Grunow. — 
in Piccone^ Alghe della Nettar Pisani p. 44. 
S, caule . . . .; ramis ìeretiusculis vel siibangulalis levibus, pa- 
lentibus, iterum ramulosis, foliis e basi tenui cuneata auguste lineari- 
lanceolalis, dentalis, minute biseriatim giandulosis, nervo tenui percursis 
rigidulis, fuscis, nigrescentibus, vesiculis minulis, sphaericis, mulicis vel 
jiarum oblongis bine inde subacutis, subie vibus vel minute giandulosis, 
peliolo tenui, lereli, receplaculis cylindraceis, teretiusculis, interne iner- 
mibus, apicerij versus minute spinulosis, cum vesiculis intermixlis, race- 
mosis, anlheridiferis. 
Hab. Singapore (leg. D. Margacci). 
A Sargasso cystophyllo Mont, differì foliis costalis et deutatis, 
ramis levibus, vesiculis sublevibus et receplaculis apicem versus denti- 
culalis , habitus similis , ab omni Sargasso polycysto receplaculis masculis 
spinulosis diversum (ita dar. auclor). 
163. Safì-gassim isulirepaiìdeii (Forsk.) Ag. — J. Ag. 
Sp. I, p. 319. 
Var. Mai§isaiieiii^ìs Grunow. — in Piccone, Alghe della Vettor 
Pisani, p. 46. 
Foliis parvis e basi cuneala subobliqua late lineari-oblongis, ob- 
longis, obtusis, conspique giandulosis, acute dentalis, rigidiusculis, obscure 
fuscis; vesiculis parvis, sphaericis vel sdboblongis, parce giandulosis ; rece- 
placulis subcuneatis, spinosis, subancipilibus, cum vesiculis intermixlis 
subracemosis. 
Hab. Massaua, in mari Rubro (leg. G. Margacci). 
