Lichens of Santa Cruz Peninsula 335 



windward, shady side of old fences bordering the salt marshes 

 about San Francisco Bay. Specimens from near Mountain 

 View landing are over 25 cm. long, with lobes reaching a 

 breadth of 16 mm. The largest apothecia seen were 10 mm. in 

 diameter, but this is exceptional. The long, ribbon-like plants 

 produce apothecia no larger than do those of only an inch in 

 height. 

 Ramalina me^iziesii. Tuck. Syn. Lichens New Eng. 12. 1848. 



7. RAMALINA FARINACEA (L.) Ach. 



Thallus tufted, erect or pendulous, compressed and two- 

 edged, or attenuate and thread-like, channeled ; color pale 

 green to almost white ; lateral white powdery soredia very 

 abundant on lobes. Apothecia lateral, rare and inconspicuous, 

 concolorous ; spores curved. 



Throughout the foothills and mountains, on trees and shrubs. 

 A few fruiting specimens were obtained on oaks in the moun- 

 tains above Searsville, at an altitude of 1500 feet. 



This plant is likely to be overlooked or confused with 

 Evei-nia prunastrt\ with which it is commonly associated. 

 Ramalina farinacea, Evernia frimastri., Usnea Jlorida^ and 

 Us7iea hirta clothe densely the twigs of trees in the foothills, 

 converting them into gray brushes. 

 Lichen far inaceus'L,. Sp. PI. 2: 1146. 1753. 

 Ramalina farinacea Ach. Lich. Univ. 606. 1810. 



8. RAMALINA RIGIDA Ach. 



Thallus small, tufted, erect, irregularly much branched, 

 terete or flattened and somewhat channelled ; the branches 

 slender, thin, their tips filiform ; color white to greenish white. 

 Apothecia small, lateral, the disk greener than the thallus; 

 spores ellipsoid, ^\'l^ mic. 



This pretty little Ramalina occurs on the trunks of alders 

 along Los Gatos Creek near Wrights, at about 800 feet, and in 

 Austrian Gulch at 1500 feet. It is found very sparingly, 

 growing with Ramalina farinacea and Evernia frunastri^ with 

 young stages of which it is likely to be confused and hence 

 overlooked in collecting. 



