272 White : The Nidulariaceae of North America 



faces perfectly even, angular, but not depressed; spores 6-10 /i 

 long, 4-8 n wide, globose to elliptic, hyaline, somewhat granular, 

 thin- walled. {PL 16. f. 17-20.) 



Growing singly on twigs, moss, etc. 



Washington : Olympia, Henderson, Suksdorf. 



British Columbia : Macoun, loy. 



2. Nidula microcarpa Peck, sp. nov. 



Peridia 4-6 mm. high, 4-5 mm. wide at the top, 3-5 at the 

 base, subcylindrical ; outer surface whitish, or pale grayish-yellow, 

 minutely tomentose, firm ; inner surface smooth, with a thin 

 brownish shiny layer formed by the drying of the glutinous inner 

 substance ; mouth entire, straight and firm ; sporangioles very 

 numerous, lenticular, covered with a thick fibrous outer coat, which 

 peels off, as in Cntcibidum crucibnlifonne, when dry rugosely 

 wrinkled, becoming smooth when moistened, reddish-brown, .5-1 

 mm. wide ; spores 6-9 ijl long, 4-6 // wide, broadly elliptic or sub- 

 globose, hyaline, thick-walled. {PL 17. f. 1-6 ; pL 18. f. 14, 13, 



Growing on wood, and on the ground. 



California : W. R. Dudley. 



Montana : Columbia Falls, R. S. Williams. 



2a. Nidula microcarpa rugispora var. nov. 



Cnicibidiini riigispovnm E. & E. in herb. 



Peridia 3-5 mm. high, 3-6 mm. wide at the top ; outer surface 

 yellowish-white, w^ith a rather thin close tomentum ; inner surface 

 smooth, whitish or brownish, somewhat shiny ; mouth recurved, 

 and spreading, and minutely lacerate, fimbriate ; sporangioles very 

 numerous, reddish-browai, rugose when dry, barely I mm. w^ide, 

 flattened, subrotund ; spores broadly elliptic, hyaline, slightly 

 thick-walled, 6-9 /i long, 4-7 n wide, slightly larger than in the 

 foregoing species. {PL ij.f. 7-9-) 



Growing on dead twigs. 



Washington : Skamania county, alt. 3,000 ft., Suksdorf, 510. 



Though this variety closely resembles the species it differs in 

 the mouth characters and in the somewhat larger spores. 



IV. GRANULARIA Roth, Ust. Ann. Bot. i : 6. pi. i.f. i. 1791 

 Nidularia Fries & Nord. Symb. Gaster. 2. 181 7-1 8. 

 Peridium composed of a single homogeneous rather thin closed 



membrane, or a thin, closely interwoven layer of branched fila- 



