448 ON THE ORIGIN OF THE BASIDIOMYCETES. 
EXPLANATION OF THE PLATES. 
Puate 15. 
Fig. 1. Stilbum vulgare, Tode. Group of plants. x 50. 
2, 9, 4. Tips of basidia of S. vulgare, showing progressive nuclear division, 
x 2000 (after J uel). 
5,6. Basidia and spores of S. vulgare, x 2000 (after Juel). 
7. Group of ascigerous form of fruit, showing three stipitate conidia- 
bearing structures in various forms of development, of Spherostilbe 
microspora, Cooke & Massee, x 50 (from type specimen). 
8. Section of conidial form of fruit of S. microspora. x 200. 
9. Section through stromatic base of S. microspora, showing origin of stem 
of conidial form of fruit, a ; also ascigerous fruit, bb. x 100. 
10,11, & 12. Basidia and spores from the conidial form of fruit of 
S. microspora. ` x 9000. 
13. Basidia and spores of conidial form (= Stilbum fusciculatum, Berk. E 
Broome) of SpAerostilbe gracilipes, Tul. x 2000. 
Piats 16. 
Fig. 14. Section through the stroma of Nectria cinnabarina, Fries, showing the 
conidial stage of fructification, aa (= Tubercularia vulgaris, Tode); 
and the ascigerous form of fruit, b, b. x 50. 
15. Basidia and spores of the conidial form of fruit of N. cinnabarina. 
x 2000. 
16. Basidia and spores of Tubercularia volutella, Corda. x 2000. 
17. Basidia and spores of Tubercularia subpedicellata, Schweinitz. x 2000. 
18. saria pulcherrima, Berk. & Broome, x 30 (from type specimen). 
19. Basidia and spores of Z. pulcherrima. x 2000. 
20. Basidia-bearing branch of Coniophora ochracea, Massee, x 500 (after 
Massee). 
. Fruiting branch of Botrytis tricephala, Saec. x 500. 
22. Fertile hypha from the conidial stage (= /sara umbrina, Pers.) of 
Hypoxylon coccineum, Bull. x 2000. 
23. Conidial condition (= Trichoderma viride, Pers.) of Hypocrea rufa, Fr. 
x 2000. 
