THE LICHEN FLORA OF THE SANTA CRUZ PENINSULA 26 1 



KEY TO TO THE SPECIES. 



A. Apothecia abundant; thallus small, matted or tufted, KOH-. 



T. erinacea 

 A A. Sterile with us. 



B. Thallus elongate, fruticose; KOH- ; on earth 2. leucomela 



BB. Lobes shorter and wider than No. 2; KOH yellow; on 



trees and shrubs 3. ciliaris 



I. ANAPTYCHIA ERINACEA (Ach.) Herre. 



Borrera erinacea Ach. Lich. Univ. 499. 18 10. 

 Physcia erinacea Tuck. Proc. Am. Acad. 1 : 224. 1847. 

 Physcia erinacea Tuck. Syn. N. Am. Lich. I: 67. 1882. 

 Physcia erinacea Herre, Proc. Wash. Acad. Sci. 7: 360. 1906. 



Thallus small, matted or loosely tufted; naked, white or greenish 

 white; beneath very white and often covered with a greenish powder; 

 the ascendant lobes more or less flat, sinuous, and irregularly 

 notched; contracting and dilating so as to be knobbed; marginally 

 cihate with many long fibrils, so that the whole plant has a fuzzy 

 appearance; cilia white, brown, or blackening; KOH—. 



Apothecia usually abundant, small, scattered; pedicellate; the con- 

 vex disk black or brownish black; more or less bluish-white pruinose, 

 becoming later naked; margm entire or minutely crenulate; spores 



15 - ^^ 

 Occurring in both Lower and upper California on shrubs near the 



seashore. A few specimens were also found on sandstone at Point 

 Lobos, San Francisco, and near Pigeon Point lighthouse. South- 

 ward it is both abundant and luxuriant, but in our territory it is rare 

 and rather depauperate. 



2. ANAPTYCHIA LEUCOMELA (L.) 



Lichen leuconielas L. Sp. Plant, ed. 12, 2: 1613. 1763. 

 Physcia leucomela Michaux, Fl. Bor. Amer. 2: 306. 1803. 

 Physcia leucomela Tuck. Syn. N. Am. Lich. I: 69. 1882. 

 Physcia leucomela Herre, Proc. Wash. Acad. Sci. 7: 361. 1906. 



Thallus fruticose, ascendant, elongated, forming diffuse clumps or 

 mats; the lobes but little di\'ided, narrow to linear, very much inter- 

 twined; margins with numerous stout, branched, black or dark 



