Seaver: The Genus Lasiosphaeria 



123 



10. Lasiosphaeria dichroospora Ellis & Ev. Erythea 

 1 : 197. 1893 



Perithecia densely gregarious, ovoid, rugose, black, tough- 

 membranaceous, clothed with a few slender brown hairs ; ostiolum 

 broad convex-papilliform, sometimes subcompressed ; asci lanceo- 

 •late, 150 X 8-10 /X, 8-spored; spores 2-seriate, cylindric, bent near 

 the lower end and hyaline below for about one third the length 

 of the spore, abruptly black above, each end mucronately pointed, 

 about 40-60 X 4-6 )u- {pi 2, f. 13-15). 



On clay loam in woods. 



Type locality : Seattle, Washington. 



Distribution : Known only from the type locality. 



Excluded species 

 Lasiosphaeria striata Ellis & Ev. Proc. Acad. Nat. Sci. Phil. 

 1893 : 443. This species was described from material collected 

 on willow limbs near Park Hill, Ontario, Canada, May 1893 by 

 J. Dearness. The plant is a discomycete belonging to the genus 

 Godronia and is apparently identical with Godronia Betheli Seaver 

 which was described from material collected on branches of 

 willow in the Rocky Mountains of Colorado. The small cups 

 are constricted at their mouths and when dry collapse so as to 

 give the appearance of perithecia which probably accounts for 

 the fact that they were placed in the genus Lasiosphaeria by Ellis. 

 The species would then be Godronia striata (Ellis & Ev.) Seaver 

 with Godronia Betheli Seaver as a synonym. 



Explanation of Plate LXVI 



Spores and asci drawn with camera lucida to a common scale. 



Figs. 1-3. Lasiosphaeria jamaicensis Seaver. i. Perithecia about natural 

 size. 2. Perithecia enlarged. 3. Ascus and spores. 



Figs. 4-2. Lasiosphaeria strigosa (Albert. & Schw.) Sacc. 4. Perithecia 

 about natural size. 5. Perithecia enlarged. 6. Ascus with spores. 



Figs. 8-1 1. Lasiosphaeria stuppea Ellis & Ev. 8. Perithecia about natural 

 size. 9. Perithecia enlarged. 10. Ascus with spores. 11. Hair from perithecium. 



Figs. 12-15. Lasiosphaeria newfieldiana Ellis & Ev. 12. Perithecia about 

 natural size. 13. Perithecia enlarged. 14. Ascus with immature spores. 15. 

 Ascus with mature spores. 



Figs. 16-18. Lasiosphaeria globular is (Batsch) Seaver. 16. Perithecia about 

 natural size. 17. Perithecia enlarged. 18. Ascus with spores. 



Explanation of Plate LXVLI 

 Spores and asci drawn with camera lucida to a common scale. 

 Figs. 1-7. Lasiosphaeria hispida (Tode) Fuckel. i. Perithecia about natural 

 size. 2. Hair from base of perithecium. 3 and 4. Perithecia enlarged. 5. Ascus 

 with spores. 6. Spore showing septa. 7. Hairs from perithecia. 



