16 LICHENS OF THE STATE OF WASHINGTON 



On trees, old wood, and rarely on rocks : Yakima Co. : Rattlesnake 

 Canyon, 2000 ft., 1931, 1542. San Juan Co.: San Juan Island, 1906, Fink 

 60 (F). Clallam Co.: Pt. Angeles, 1911, Foster (F). Whatcom Co.: 1916, 

 Herre (W). Island Co. : Whidbey Island, Langley, 1920, Grant 3032 (F). 

 Thurston Co.: Gate, 1912, Foster 1979 (F). Yakima Co.: Mt. Adams, 

 1881, Pringle (F). Ferry Co. : Republic, 1912, Foster 2300 (F). Washing- 

 ton Territory, Suksdorj (F). 



This species can easily be determined by the short-stalked, semi-globose 

 apothecia and the brov/n, oblong, 1 -septate spores. 



5. SPHAEROPHORACEAE 



Thallus foliose or fruticose, with some differentiation into cortex, algal 

 layer and medulla, cortex usually equally developed on all surfaces. Apo- 

 thecia borne laterally or terminally on the lobes or branches of the thallus, 

 adnate to sessile surrounded by a thalline margin; asci 8-spored; spores 

 hyaline, violet-brown to brown, nonseptate or 1 -septate. 



Alga Protococcus. 



7. Sphaerophorus Pers. Neue Ann. der Bot. 1 :23. 1794. 



Thallus fruticose, erect, cortex cartilaginous, medulla forming rather a 

 solid cylinder, surrounded by the algal layer. Apothecia borne on the ends 

 of the branches, within globose, swollen thalline receptacles, opening irregu- 

 lar near the top ; hypothecium hyaline ; paraphyses delicate ; asci 8-spored ; 

 spores hyaline with a thin violet-black, dust-like epispore, nonseptate. 



1. Sphaerophorus glohosus (Huds.) Wainio, in Result. Voyage S. Y. 

 Belgica, Bot. 35. 1903. Lichen glohosus Huds. Fl. Angelica 460. 1762. 

 Sphaerophorus globiferus (L.) DC. 



Thallus silvery gray, reddish-brown, or pale olive-buff (R), shrub-like 

 loosely branched, terete, smooth and shiny, brittle and breaking easily, with 

 numerous clusters of small coralloid branchlets. Apothecia terminal, 0.5-2.0 

 mm. in diameter, within thalline receptacle ; disk black, flat ; spores hyaline 

 with a thin violet-black epispore, spherical, 6.6-16.0 /x in diameter. 



On soil, rocks, trees, and fallen logs: Pacific Co.: Loomis Lake, 1931, 

 775. Kitsap Co. : Hidden Ranch near Bremerton, 213 ft., 1931, 1737. What- 

 com Co.: Ruth Mountain, 5500 ft., 1928, Simguist 1843 (W). Pierce Co.: 

 Enumclaw, 442 ft., 1931, 687; Mt. Rainier, trail to Mowich Lake, 3500 ft., 

 1940, 3065. King-Kittitas Co.: Snoqualmie Pass, 3010 ft., 1931, 812. Clal- 

 lam Co. : Olympic Mountains, Elwha River Valley, 2000 ft., 1907, Frye 8 

 (W). Wahkiakum Co.: Cathlamet, 1907, Foster 508 (W). Thurston Co.: 

 Gate, 1912, Foster 2017 (W). Skamania Co.: Little Soda Springs Camp 

 Grounds, 1933, L. D. Lawrence (W). 



Collected only west of the Cascade Mountains, where it is widely dis- 

 tributed, common on tree trunks. It is easily recognized by the erect, terete 

 branches, bearing numerous branchlets. Medulla turns blue with IKI. 



