the Genus Cordyceps. 
43 
EXPLANATION OF FIGURES IN PLATES 
I AND II. 
Illustrating Mr. Massee’s paper on Cordyceps. 
PLATE I. 
Fig. i. Cordyceps Henley ae, Mass., growing from the head of a caterpillar. 
Nat. size. 
Fig. 2. Section of portion of a fertile branch, showing the superficial perithecia. 
x 20. 
Fig. 3. Asci in different stages of development, x 750. 
Fig. 4. Apex of an ascus, showing the arrangement for effecting dehiscence, 
x 1200. 
Fig. 5. Spore as appearing when placed in water, x 750. 
Fig. 6. Spore as appearing when treated with very dilute potassic hydrate, 
x 750- 
Fig. 7. Portion of Fig. 5, more highly x . 
Fig. 8. Portion of Fig. 6, more highly x. 
Fig. 9. Portion of a mature spore breaking up into its component cells, x 750. 
Fig. 10. One of the component cells of a spore germinating, x 1200. 
Fig. 11. Transverse section through a segment of the caterpillar serving as 
host to the fungus, showing the interior to be completely filled with densely 
interwoven hyphae, and forming a hard, compact mass when dry. x 2. 
Fig. 12. Portion of the hyphae filling the body of the host-caterpillar. x 750. 
PLATE II. 
Fig. 1. Cordyceps palustris , Berk. Nat. size. 
Fig. 2. Section of portion of head of same, showing the perithecia. x 50. 
Fig. 3. Ascus of the same. X350. 
Fig. 4. Spore of same, x 350. 
Fig. 5. Portion of spore in young stage, with oil-globules, x 750. 
Fig. 6. Portion of mature spore, showing transverse septa. X 750. 
Fig. 7. Cordyceps flavella. Berk, and Curtis ; group of Fungi growing from 
portion of a caterpillar. Nat. size. 
Fig. 8. Section of portion of head of same, showing the perithecia. x 50. 
Fig. 9. Ascus. x 350. 
Fig. 10. Spore, x 350. 
Fig. 11. Cordyceps caloceroides, Berk, and Curtis. Nat. size. 
Fig. 12. Section of a superficial perithecium and portion of stroma of same, 
showing the true parenchymatous structure of the tissue, x 150. 
Fig. 13. Spore of same, x 350. 
