ee 
EXPLANATION OF PLATES 129 
PLATE ıı 
wre um * from Colorado. 1. Perithecium showing form of indi- 
Bag Së . 0 # Spore. 4. Apex ai ascus showing the apical body which 
colors blue with و‎ wé 
5-7. Fy dici "ھ0‎ 86 5. Perithecium showing stromatic layer in 
section. 6. Asc pore. 
8-11. fem equorum * from Aberdeen, S. D. 8, Perithecia showing the thin 
flat crust-like stroma through which the beaks of the perithecia project. 9. Ascus. 
IO-II. dope with and without 0 SM پچ‎ II ی‎ the lateral germ slit. 
. Hypocopra gigaspora. 12. rithecium with stroma in section through 
KE Ge beak appears doen. I3. dons I4. Spore. =. Ascus apex, X 315. 
PLATE 12 
-5. Hypocopra violacea, 1. Perithecium shown to be completely imbedded in a 
more or less perfect stroma. In all other species the mycelium is not condensed ex- 
cept at the surface where it forms a thin stromatic crust. 2. Diagram traced from 
hand section showing de basal of the stroma, 3. Ascus. 4. Apex of ascus, 
X 315. 5. Spore. 
6-8. Hypocopra Dakotensis. 6. Perithecium drawn when the edge of the 
stromatic shield was composed of colorless mit hyphae which had not become 
differentiated into a stroma. The boundary line represents the edge of this mycelium. 
ci. 8. Different views of three spor 
9-14. Hypocopra merdaria. 9. Perithecium showing a rather small individual 
stromatic shield. IO Ascus. II. Ascus of one of Plowright's specimens named by 
inter. More details are omitted in this than the other. 12. Apex of mature ascus, 
X 315. 13. Apex of young ascus, X 315. 14. Mature spore. 
15-18. Hypocopra rostrata, 15. Perithecium showing the pseudo-stroma in 
section. 16. Asci, one showing the Nego assumed by the spores when 
mounted in water. 17. Ascus apex, X 315. . Two spores. 
PLATE 13 
1-3. Delitschia Marchalii. 1. Perithecium. 2. Ascus. 3. Spores. 
4-6. Delitschia didyma. 4. Perithecium. 5. Ascus. 6. Spore. 
7-9. Delitschia eccentrica. 7. Perithecium. 8. Ascus. 9. Spore. 
10-13. Delitschia apiculata. 10. Perithecium. II. Ascus, 12. Spore. 13. 
Hair from beak of perithecium 
14-16. Delitschia leporina. 14. Perithecium. 15. Asci 16. Spores. 
PLATE 14 . 
I-3. ragen polyspora. 1. Perithecium. 2. Ascus. 3. en 
4-6. Delitschia vulgaris. ee rithecium. 5. Ascus. 6.5 
79 ages سر ےہ‎ 7. Perithecium. 8. Asc 9. Spo 
10-12. Delits hia Winteri. 10. Perithecium. II. ide y2. Se 
ge تسین‎ es were عو میسن‎ at a time when I ET that these two forms were dis- 
tinct, but subsequent cultures, from Brookings, 5. D., especially, showed every gradation 
spore and stromatic characters between the two extremes figured he 
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