THE LICHEN FLORA OF THE SANTA CRUZ PENINSULA 93 



var. AEQUATA (Flk.) 



Lecidea sabuletorum aquata Floerke, in Schaer. Spicil. 152. 1828. 

 Lecidea enter oleuca aquata Tuck. Syn. N. Am. Lich. II: 80. 1888. 



Thallus of whitish or gray squamules, irregularly distributed 

 or crowded and then rimose areolate; KOH yellow; CaC^C^ red. 



Apothecia at first innate, then subsessile to superficial, often 

 crowded but retaining their regular circular form; disk black, from 

 flattish to convex; margin regular, entire, but eventually disap- 

 pearing as the disk becomes more convex; tips of the loosely 

 coherent paraphyses bluish black; hypothecium pale or colorless; 



6 - 8.5 

 asci inflated clavate or wedge-shaped; spores /* 



On various rocks in the foothills and mountains. A lichen of 

 Central and Northern Europe, also occurring along the Atlantic 

 coast of America. 



var. THEIOPLACA Tuck. 



Lecidea enter oleuca var. theioplaca Tuck. Genera Lichenum, 179. 



1872. 

 Lecidea enter oleuca var. theioplaca Tuck. Syn. N. Am. Lich. II: 79. 



1888. 



Thallus of pale yellow or sulfur-colored, globose or crenulate 

 warts, mostly irregularly distributed and areolate, or closely com- 

 pacted into a thin, uniform crust; KOH ; CaCl 2 2 vermilion; 

 the color of the thallus precludes a reaction with KOH. 



Apothecia small to medium, numerous, irregular, concave or plane, 

 the thin, entire, greenish margin paler than the black disk, and 

 finally excluded; hymenium colorless or brownish; hypothecium dark 

 brown; spores as in the type. 



On cliffs bordering the sea, at Point Lobos, San Francisco, and 

 southward along the coast, at Point San Pedro and Pescadero. 



Described by Tuckerman from about San Francisco and also 

 determined by him from South Carolina and New Jersey. 



In the author's opinion this is a species rather than a variety, 

 distinguished by the different hypothecium, the different chemical 

 reactions, and other minor distinctions. 



