HASSE— IJCHENS. IS 



38. L. auriculata Th. Fr. Granitic rocks, Santa Monica Mts ; near 



Klsinore. 

 39' L. ♦* paupera Nyl Rocks, near San Bernardino (S. B. 



Parish). No. 2,928. 



40. L. variegata Fr. Rocks, San Gabriel and Santa Monica Mts. 



41. L. atrobrunnea Schaer. Quartz rocks, near E^lsinore. 



42. L. leucophaea Tuck. S^i^tose rocks, Santa Monica Mts. 



43. L. euphorea Tuck. Thallus continuous, diffu<5e, cinerascens; spores 



ovoid-ellipsoid, o.oii long, o 006-7 broad; sperinatia arcuate. On 

 Umbellularia californica, San Gabriel Mts. at 1,000 meters alt. 



44. L. manni Tuck On granite, San Gabriel Mts 



Spores 8, oblong-ellipsoid or tusiform. 



45. L. alpestris Sommerf. Granitic rock; spores simple, r-3 septate; 



Santa Monica Mts. 



Spores 8, fusiform-elipsoid, 3 septate 



46. L ablephora Nyl. Sp. 0.023-27 long, 0007-8 broad. On clay, Santa 



Monica Mts. 



Spores 8, oblong, 2 septate. 



47. L. arthoniza Nyl. sp. 0.020 long, 0005 broad. On granite, vSan 



Gabriel Mts. 



\ II. Spores brown or migrescent. 

 {Buellia De Not.) A. Thallus variously formed; not citrine; 

 thallus radiata or laciniata; sp. brown, septate; spermatia 

 arcuate. 



48. L. spuria Arn. On rocks, Catalina IsUnd. 



49. L. Stellulata Tayl. Rocks, Cataliua Island and in the Mts. 



Spores I, rarely septate; spermatia straight, small. 



50. L. halonia (Tuck.) Rocks, Catalina Island. 



5i. L. bolacina (Tuck ) Earth and calcareous rocks. 



52. L. semitensis (Tuck.) Rocks, San Gabriel Mts. at 1,800 meters. 



53. L. lepidastra (Tuck.) Calcareous and granitic rocks, Santa Monica 



Mts ; near Elsinore. 



54. L. triphagmia (Tuck.) On rocks and dead wood; rarely distributed. 



55. L. disciformis Nyl. {Buellia parosema (Ach., Th. Fr.) On barks; 



common. 



Spores 8, browg, typically 3 septate; spermatia straight on 

 jointed sterigmata. 



56. L. albo=atra (Hoffm ) On hemlock bark, San Gabriel Mts. 



57. L. ♦* ambigua Ach. Rocks, Catalina Island; common on slate 



rock in the Santa Monica Mts. 



58. L. *' saxicola Fr. Stintose rocks near Santa Monica. 



59. L. •♦ f . d{)ipoIia Nyl. On argyllaceous rock, near Soldiers' 



Home. 



60. L. aliena Nyl. {Buelha oidalea Tuck ) On living bark and dead 



wood Catalina Island. 



61. L. •' penichra (Tuck.) Rocks, Santa Monica Mts. 



62. L. ♦* pulchella Schrad. Granite, San Gabriel Mts. 



63. L. pullata (Tuck.) Rocks, Santa Monica Mts, 



Spores 4-8, rarely 2 in thecis, migrescen; 3-5 septate or muriform. 



64. L. petraea Flat. Rocks near Santa Monica. 



65. L. montagnaei (Tuck.) Flot. On rocks, throughout; San Bernar- 



dino {S.B. Parish,) No 2,919. 



