PYRENOMYCETE.^ FROM WESTERN NEW YORK. 221 



the observer. It is called ejection, or ejaculation of the sporidia, 

 herausschleuderung, etc. A name is here proposed which is univer- 

 sally applicable, viz.. sporobolia (Greek, sporos, and bolia from bole). 

 Following Zopf, in Die Pilze, we may divide this into, <?, simultaneous 

 sporobolia, l\ succedaneous sporobolia, A small piece of the black 

 crust, and a long ostiolum were removed from the wood and placed 

 in a drop of water on the slide, when the microscope revealed the 

 curious fact that the sporidia were escaping from the lower, or cut 

 end of the ostiolum, and not from the tip. This retropulsion of the 

 sporidia, or retrosporobolia, was probably caused by endosmosis taking 

 place, and the hydrostatic pressure forcing the sporidia stored up in 

 the ostiolum to escape along the lines of least resistance, by way of the 

 cut lower end of the ostiolum, which was larger, and, presumably, 

 more pervious. Plate XX., Fig. 7 shows a branched ostiolum and the 

 act of retrosporobolia, which was succedaneous. 



364. Amphisphaeria aeruginosa Fairman. n. sp. 

 (Plate XXII., Figs, i, 2, 3,4.) 



Perithecia scattered, or gregarious, minute, about So to 100 ^i 

 diam., depressed hemispherical, erumpent, black, with a minute 

 papilliform ostiolum ; asci cylindrical, 4-8 spored ; sporidia uniseptate, 

 overlapping uniseriate, straight or curved, narrow-elliptic, scarcely 

 constricted at the septum, ends sub-obtuse, smoky-hyaline at first, 

 becoming pale brown, 13-15 x 2^-3^ /^. On old board ( Tilia') lying 

 on the ground in school yard, Lyndonville, N. Y. , Nov., 1905. Many 

 of the sporidia are shrivelled, and the lower cell is contracted, so that a 

 club-shaped effect is produced. The surface of the board is brown, 

 not black as in A. atrograna (C. & E. ), and the interior of the wood 

 is stained green, as if caused by Chlorospieniuvi aniginosiun. Speci- 

 mens were submitted to Dr. H. Rehm, Neufriedenheim, Miinchen, 

 and he writes, " wachst offenbar auf griinfaulem Holz durch Chloro- 

 spleniiim ceruginosiim, und steht der A. atrograna (C. & E.), zu- 

 nachst, verschieden besonders durch kleinere Perithecien. 1st als nova 

 species zu erachten, und von Ihnen zu veroffentlichen." The follow- 

 ing species were sent to Dr. Rehm for identification, and found to be 

 new. He has kindly allowed me to publish them : 



365. Didymella arthoniaespora Rehm, n. sp. 

 Perithecia sessilia, gregaria, hemisphrerica, vix papillata, ostiolo 



perspicuo pertusa, nigra, ad basim hyphis nonnullis brevibus, fuscis 

 obsessa, c. lOO fJ. diam., parenchymatice fuscidule contexta, sicca 



