HASSE— LICHENS. 1 1 



11. L. vitellina Ach. On trees and rocks ; frequent. 



♦' aurelia Ach. Rock. Occasional with the type. 



12. L. spraguei (Tuck). On granite in the higher mountains. Apothe- 



cia have not been observed. It occurs in small cushions of citrine 

 color and plainly stipitate. 



13. L. fuscoatra Nyl. Sandstone near Santa Monica. 



B. Apothecia biatoro-lecanorine Spores 8, i-septate, colorless; 

 sterigmata short jointed; spermatia short, straight. 



14. L. holophaea Nyl. Calcareons rocks on the beach near San Pedro. 



C. Apothecia lecanorine ; spores 8, rarely more; i, rarely 

 3, septate, brown. Sterigmata jointed and spermatia 

 straight. {Rinodma Tnck.) 



15. L. sophodes Ach. On various barks ; common. 



16. L. exigua Nyl. On rocks and barks ; common. 



17. L. roboris Nyl. Trunks of small trees ; frequent in San Gabriel 



Mts. at 800 meters alt. 



18. L. confragosa Nyl. On rocks. 



i9. L. atrocinerea Nyl. Rocks near Santa Monica. 



20. L. conradi, (Koerb ) On earth, Santa Monica Range. 



21. L. mniareae Ach. Same habitat as the last. 



22. L. radiata (Tuck.) On rocks ; common. Catalina Island. San 



Bernardino (5. B. Parish). 



23. L. angelica (Stz. ) On rocks. Throughout. 



2 4. L. thysanota (Tuck.) Rocks, Santa Monica Range occasionally. 

 San Gabriel Mts. at 8-900 meters elevation. Sparingly fruiting. 



25. L. oreina (Mass. j On granite in the higher mountains. 



26. L. hallii (Tuck.) On oak bark. Frequent in the San Gabriel Mts. 



at 8-900 meters elevation. 



27. L. aterrima (Anz.) Rocks, San Gabriel Mts. at 1,800 meters. 



D. Spores 8, simple, colorless. Sterigmata simple. Spermatis 

 long ; more or less arcuate. Squamaria DC. 



28. L. chrysoleuca Ach. On granite in the mountains above 1,800 



meters (Z. rubina Ach.) San Bernardino Mts. {S. B. Parish). 

 San Jacinto Mts. (Z?r. A. Davidson). 



29. L. melanophthalma Ram. With the last {L. rubina o^aca Ach.) 



(5. B. Parish.) 



30. L. saxicola Ach. { L. mura/is Sch.a.er.) Rocks; common. 



«* diffracta Fr. In the higher mountains. 



♦* semitensis Tuck. Wilson's Peak, San Gabriel Mts. 



31. L. pinguis Tuck. Calcareous rocks, Islands of Catalina and San 



Nicolas (Blanche Trask.) 



32. L. glaucophana Nyl. Thallus glaucescent of round, lobate, squamae 



small, containing from one to several apothecia, which are innate 

 and flat ; becoming sessile and convex, with a thin, white, entire 

 margin ; epithecium fuscous ; spore 0.016-23 long, 0.004-5 broad. 

 On granite boulders near Dell's Camp, San Antonio Canon, San 

 Gabriel Mts. 



E Apothecia lecanorine; spores 8, ellipsoid, simple, colorless; 

 sterigmata simple; spermatia acicular, arcuate. 

 ZZ' L. subfusca Nyl. On various rocks; common. 



♦♦ canipestrls Nyl. On rocks. Throughout with the type. 

 San Bernardino {S. B. Parish), San Nicolas Island {Blanche Trask.) 



34. L. albella Ach. {L. pallida Sch.aiQ^r.) On bark; throughout. Common 



35. L. caesio rubella Ach. (Z. pallida cancriformis Tviok.) Occasion- 



ally with the last species. 



