Bee ACS, re 
leaned t 
ae 
4 
Pl. cell. aph. 2. THALASSIOPHY TK. 35. Sphacel. 338 
8. Sphacelaria Mertensit. Merten’s rust-weed. 
Thatlus branched, yellowish brown; branches pinnate; 
loles mostly opposite, short ; joints half as long as broad. 
Conferva Mertensii, Engl. Bot. 999; Dillw. Syn. 79. 
Tufts 3 inches high; stems many, cylindrical, pinnate ; 
branches short, opposite, 2-rowed, from the base of the 
stem; pellucid. 
4, Sphacelaria cespitula. Small-tufted rust-weed. 
Thallus tufted, very small; branches mostly simple, al- 
ternate, long, blunt. 
Conferva olivacea, Dillw. Syn. 57. 
Sphacelaria cespitula, Lyngbye Hydr. Dan. 106, 
~ On other sea-piants. 
Threads about a line high, aggregated, vellowish green. 
5. Sphacelaria fusca. Brown rust-weed, 
Thallus threadlike; branches distant, mostly alternate ; 
twigs spreading, clublike; jozmts transversely banded in the 
middle, as long as broad. 
Conferva fusca, Huds. Fl, Angl. 602; Dillw. Conf. 95, 
Stones and rocks in the sea. 
Threads $ or 4 inches long. 
XI. 36. ELLISIUS. Ellis. 
Thallus rose-red, branched ; main stem solid, continuous, 
or slightly jointed; branches and es scattered, jointed ; 
joints of the twigs simple, composed of one tube; thece 
‘ovate, lateral, or immersed in the tip of the branches. — 
Marine. 
1. Ellisius glaber. Bald ellis. 
Threads much branched, red; stem thick, jointless, net- 
like, naked below, very much branched above; twigs 
crowded, nearly in whirls, short, alternately branched, 
jointed ; joints as long as broad. 
Conferva Arbuscula, Dillw. Conf. 85; Engl, Bot, 1916. 
Sea-shore. 
Thallus tufted, 2 inches high. 
