Pl. cell. aph. 2. THALASSIOPHYTA. 29. Callith. 325 
9. Callithamnion Turneri. Turner’s pretty-weed. 
Thallus pinnated, rose-colour; lobes opposite, simple, 
or rather pinnate; joznés 3 times as long as broad. 
Conferva Turneri, Dillw. Conf. 100. 
Ceramium Turneri, Roth Cat. 3, 128. 
Sea-shore, on sea-plants. 
Thallus closely tufted, an inch high, upright, linear, 
lanceolate. 
10. Callithamnion repens. Creeping preity-weed. 
d 5 
Thallus creeping, closely entangled, branched, minute, 
light rose-red; branches and twigs mostly pointing one 
way; knots slightly contracted; joints 3 times longer than 
broad. 
Conferva repens, Dillw. Conf. 13; Engl. Bot. 1608. 
Ceramium repens, d4gardh Syn. 63. 
Callithamnion repens, Lyngbye Hydr. Dan. 128. 
Sea-shore on shells. and marine plants; Autumn. 
Tufts rather stiff, brownish red; stem creeping; branches 
upright, mostly divided; twigs spreading. 
8. tenellum. Thallus light rose-red, flaccid, very slender; 
branches simple. 
Conferva tenella, Dillw. Syn. 72. 
Callithamnion repens tenellum, Lyngbye Hydr. Dan. 128. 
11. Callithamnion plumosum. Feather pretty-weed. 
Thallus creeping, branched, minute, deep rose-colour; 
branches upright, below rather naked, above pinnated; 
segments opposite, close; joints twice as long as broad. 
Conferva Pluma, Dillw. Syn. 72. 
Parasitic on larger marine plants. 
Thece globose, mostly terminal. 
12. Callithamnion Daviesi7. Davies's pretty-weed. 
Thallus branched, tufted, upright, very minute, free, 
rose-red ; branches and twigs alternate, scattered, pointed ; 
joints 3 times as long as broad. 
Conferva Daviesii, Dill. Syn. 13; Engl. Bot. 2329. 
Callithamnion Daviesii, Lyngbye Hydr. Dan. 129. 
Sea; on marine plants. 
Thallus rarely more than a quarter of an inch long, not 
entangled; thece placed in rows along the upper side of 
the twigs. 
