40 Cooke and Mas see— On a Development of Ephelis. 
EXPLANATION OF FIGURES IN PLATE IV. 
Illustrating Dr. Cooke’s and Mr. Massee’s paper on a new development of Ephelis . 
Fig. I. An inflorescence of Panicum palmifolium infested with Balansia trini- 
tensis. a a, basal branches of the inflorescence infested with the fungus, but not 
adpressed to the main axis ; the greater part of the fungus is in the early ascigerous 
condition ; at b, the stem of the ascophore is becoming elongated. Nat. size. 
Fig. 2. Portion of a spike with the ascosporous condition of the fungus fully 
developed. Nat. size. 
Fig. 3 . Transverse section of a diseased inflorescence, a, rachis of inflorescence. 
b , a branch of the inflorescence, c , stroma of fungus, d, cortex or rind of stroma, 
x 8o. 
Fig. 4. Transverse section through part of a diseased inflorescence, a , portion 
of branch, b, stroma of fungus, c, c, hyphae with lateral swollen branches, d, 
a hair on the branch, x 400. 
Fig. 5. Vertical section through agonidial disc {Ephelis trinitensis). a, gonidia. 
b, coloured hyphae forming fringed margin bordering the Ephelis. c, portion of a 
branch of the inflorescence, d , hair from epidermis of branch, x 400. 
Fig. 6. Isolated gonidiophores. a, supporting gonidia. b, belonging to gonidial 
or Ephelis-stage of reproduction, x 400. 
Fig. 7. Gonidia. x 1000. 
Fig. 8. Gonidial or Ephelis-sX.a.ge of reproduction, x 75 . 
Fig. 9. Young and yet sessile ascophore seen from above, x 75. 
Fig. 10. Group of mature ascophores springing from gonidial cavities, a , a. x 75. 
Fig. 11. Vertical section through an ascophore. a, capitate stroma with peri- 
thecia. b , persistent gonidiophores of the gonidial disc, c, remains of the primor- 
dium. x 400. 
Fig. 12. Asci. x 400. 
Fig. 13. Ascospores. x 400. 
Fig. 14. Portion of an ascospore, showing the protoplasm broken up into separate 
pieces, which produces the appearance of septation under a power of 400 diam. 
x 1000. 
Fig. 15. Vertical section through the primary stroma passing through an old 
gonidial disc with the permanent gonidiophore, a. b , young primordium of an 
ascophore. x 400. 
Fig. 16. Hyphae from the capitate stroma of an ascophore which become 
thickened, closely septate, and brown towards the exterior, x 400. 
