46 CALIFORNIA ACADEMY OF SCIENCES. 



Plgeosphseria modesta. 



Peritliecia superficial, orbicular, black, // 135, with stout 

 black spines, // 40 — 50; asci 8-spored, ovate, or broadly fusi- 

 form, m 45 — 50X15 — 20; paraphyses none: sporidia ellip- 

 tic, transversely 3 — 4, longitudinally 2-septate, pale olive- 

 brown, j-i 10 X 6. 



On decorticated, rotting branches of Eucalyptus. San 

 Francisco, Sept. 2846. 



Ophiobolus claviger. 



Peritliecia globular with papillate ostioluni, gregarious, 

 or scattered, erumpent, then free ^ — 1 mm., at first filled 

 with minute spermatia ; asci linear-clavate, 8-spored, yu 210 

 X 14; paraplryses filiform, vacuolate; sporidia pale brown, 

 20 — 25-septate, the upper third somewhat swollen, and 

 constricted, // 140 X 7. 



On creeping stems of Audibertia humilis. Folsom, May. 



3233. 

 Ophiobolus byssicola. 



Peritliecia globose, with prominent ostioluni, superficial, 

 f — 1 mm., nestling in dirty-brown subiculum; asci 8-spored 

 cylindrical-clavate, tapering to a slender pedicel, which ter- 

 minates in a bulbous base, /* 170 X 16; sporidia pale brown, 

 tapering, obtuse at the ends, 20 — 30-septate, constricted ; 

 the upper and 1 — 3 other cells at irregular intervals, en- 

 larged and globular, m 120—140 X 4—6. 



On decorticated branches of Sambucus glauca. Blue 

 Canon, June. 3289. 



Ophiodothis tarda. 



Hvpophyllous, in irregular, angular spots, 3 — 4 mm. broad, 

 often confluent, papillate, shining black : asci 8-spored, cylin- 

 drical, abruptly contracted, curved and bulbous at the base, 

 fx 57 X 9; sporidia linear, pluriguttulate. }x 42 X 2. 



On leaves of Rhus diversiloba. San Francisco, Jan. 3047. 



Fruit slowly formed after lying long on the ground. 



