350 49. Olivia. 2. THALASSIOPHYTA. Pl. cell. aph. 
8. Olivia cinerea. Ashcoloured olivi. 
Thalli very minute, roundish, ash-grey, ageregated into 
a powder crust. 
Byssus saxatilis, Withering Bot. Arr. ed. 2. 
Lichen cinereus, With. Bot. Arr. ed. 4. 
Limestone-rocks and stones. 
4, Olivia nigra. Black olivi. 
Thallt very minute, roundish, dull black; ageregated 
into a black powdery crust. 
Byssus antiquitatis, Lin. S. P. 2 ! 
Lepraria nigra, Turn, and Borr, Lich. Brit. 1,21; Eng. Bot, 2409. 
Tops of oak-posts and old wood. 
5. Olivia violacea. . Frolet olivi. . 
Thalli minute, ovate, dull red, aggregated into a reddish 
crust. 
Byssus Jolithus, Lin. S. P. 1638. 
Lichen Iolithus, With. Bot. Arr. 4,3. 
Lichen rubens, Acharius Meth. Lich. 6. 
Lepraria Tolithus, Achar. Meth.8; Engl. Bot.2A471. 
St. Winifred’s blood, in the Holy-well, Cheshire. 
Bark of trees, rocks and stones in springs. 
Crust dull crimson, smells like violets, or orrice-roots. 
6. Olivia cruenta. Bloody olivi. 
Thallt minute, ovate, red, aggregated into a dark red, 
gelatinous crust. 
Tremella cruenta, Engl. Bot. 
Bottom of walls in damp places. 
F. Lincxipex. Thallus continuous ; integuments mem- 
branaceous, smooth; inside fleshy, cellular, slippery; spo- 
ridia in beadlike filaments sunk in the substance of the 
thallus.—Green or brownish, not becoming black. 
XXV. 50. CARRODORUS. Carrodori. 
Thallus long, branched, brownish; sporidia elliptical, in 
anastomosing lines.—Marine, foetid, slippery. 
Carrodorus foetidus. Stinking carrodort. 
_ Thallus pale olive, branched; branches crowded, acute. 
Conferva foetida, Villars Dauph. 3,1010; Dillw. Conf. 104; Engl, Bot. 
2101. 
Ulva foetida, Vaucher Conf. 285. 
