Ser. RHODOSPERMEA. Fam. Chondriee. 
Puate CCLXXXIII. 
CHYLOCLADIA ARTICULATA, Grev. 
Gen. Cuan. Frond (at least the branches) tubular, constricted at regular 
intervals, and divided by internal diaphragms into joints, filled with 
a watery juice, and traversed by a few longitudinal filaments ; peri- 
phery composed of small, polygonal cells. Fructification, of two 
kinds, on distinct individuals ; 1, spherical, ovate, or conical capsules 
(ceramidia) containing a tuft of wedge-shaped spores on a central 
placenta; 2, tripartite ¢e¢raspores, immersed in the smaller branches, 
near their apices—Cuytocrapta (Grev.),—from yvdos, juice, and 
kdados, a branch. 
CuyLociania articulata; frond tubular, gelatinoso-membranaceous, strongly 
constricted throughout as if jointed, much branched, between pmnate 
and dichotomous, fastigiate, the upper branches often crowded ; cap- 
sules obtusely conical. 
CHYLOCLADIA articwata, Grev. in Hook. Br. Fl. vol. ii. p. 298. Wyatt, Alg. 
Danm. no.73. Harv. Man. ed. 2. p.102. Harv. in Mack. Fl. Hib. pt. mu. 
p. 200. 
LoMENTARIA articulata, Zyngb. Hyd. Dan. p.101. t.30. Endl. 3rd Suppl. 
p.43. Kitz. Phyc. Gen. p. 441. 
CuHonpria articulata, 4g. Sp. Aig. vol.i. p. 357. Grev. Fl. Ed. p.291. Spreng. 
Syst. Veg. vol.iv. p. 342. 
GIGARTINA articulata. Lamour. Ess. p. 49. 
Fucus sericeus, var. Esper, Ie. Fuc. vol.i. t. 82. 
Fucvs articulatus, Lightf. Fl. Scot. p. 959. Smith, E. Bot. t.1574. Stack. 
Ner. Brit. p.28.t.8. Turn. Syn. p. 383. Turn. Hist. t. 106. 
Utva articulata, Huds. Fl. Ang. p. 569. 
Has. Between tide-marks, attached to rocks and Alge. Annual. Summer. 
Common. 
Grocer. Distr. Atlantic and Mediterranean shores of Europe. 
Descr. Root of many branching fibres matted together. Fronds densely tufted, 
six or eight to ten inches or more in length, from a quarter line to a line 
in diameter, tubular, filled with watery fluid and traversed by a few fibres, 
constricted throughout at regular intervals into joints, the lowermost of 
which are cylindrical, the upper gradually more elliptical, and those of the 
upper branches frequently beaded ;—much branched from the base, the 
primary branching dichotomous, the secondary often opposite or somewhat 
pinnated, and the ramuli frequently whorled round the nodes, particularly in 
the upper half of the plant :—thus old tufts often become very dense and 
bushy above from the inordinate number of these whorled branches and 
