THE LICHEN FLORA OF THE SANTA CRUZ PENINSULA 95 



2. CATILLARIA FRANCISCANA (Tuck.) Herre. 

 Biatora franciscana Tuck. Syn. N. Am. Lich. II: 32. 1888. 



Thallus effuse, of small but thick and coarse squamules; these 

 numerous and close together, concave, rugose, undulating, often 

 crenate and lobulate, or sometimes closely appressed, few in number, 

 or nearly disappearing; occasionally passing into warty areolate 

 conditions; ash-colored with lighter colored margin, hardly darken- 

 ing; hypothallus indistinct or absent; KOH ; CaC^C^ . 



Apothecia of medium size, i to 1.25 mm. wide; disk from slightly to 

 strongly convex, dark dull brown to blackening, with a white bloom; 

 the rather stout, lighter colored margin finally excluded; epithecium 

 brown; hypothecium colorless or faintly colored; paraphyses strict, 

 not septate, their slightly thickened tips light brown; asci elongate 

 clavate, about as high as paraphyses; hymenium colorless, blue 



with I; spores narrowly oblong-ellipsoid, ji. 



i4 22 



On rocks all along the Pacific coast, from near the Cliff House, 

 San Francisco, southward. Recorded by Tuckerman from the Oak- 

 land Hills and by Dr. Hasse from the coast of Southern California. 



3. CATILLARIA TRICOLOR (With.) Th. Fr. 



Lichen tricolor Withering, Arrang. 4 : 20. 1796. 

 Catillaria tricolor Th. Fr. Lich. Scand. 2 : 574. 1874. 

 Biatora mixta E. Fries, Vet. Ak. Handl. 267. 1822. 

 Biatora mixta Tuckerm. Syn. N. Am. Lich. II: 30. 1888. 



Thallus whitish ash-color to dull gray, and from nearly smooth to 

 granulate, becoming almost chinky, areolate, the small areolae rugu- 

 lose; usually limited by a black hypothalline line; KOH yellow; 

 CaCl 2 2 -. 



Apothecia small to minute, appressed sessile; disk at first flat, 

 soon becoming convex, flesh-color to reddish brown and blackish, 

 pruinose; the thin margin usually persistent; epithecium and hypo- 

 thecium colorless; paraphyses simple, free, thread-like, slightly knob- 

 like at the apex; thecium blue with I; asci inflated clavate, /<; 



4o 



