136 Journal of the Mitchell Society [September 



fruiting stage has also been developed in cultures from tissue taken 

 from near the center of large sclerotia. 



This Porta is herein given the name Poria Cocos to relate it to its 

 tuckahoe stage. 



College Station, 

 Ealeigh, N. C. 



EXPLANATION OF PLATE 37 



Fig. 1. Hypha from mycelial envelope of sclerotium as it appears when sclerotia 



are buried or put into the dark room. 

 Fig. 2. Variation among the cells which compose the interior of the sclerotium. 

 Fig. 3. A diagrammatic section of a sclerotium with three groups of woody 



tissue and one of bark remaining. Proportional sizes are shown. 

 Fig. 4. Diagram of a section of an apparently normal root and of a sclerotium. 



The sections are about one and one-half inches distant from each other. 



The woody elements have become separated into seven groups. Eelative 



sizes are preserved. 

 Fig. 5. A diagram of a sclerotium showing relative sizes in cross section of tlie 



woody elements. The sections are about an inch distant from each other. 

 Fig. 6. All of the xylem elements have been destroyed in this section but much 



of the bark remains although it is densely filled Avith fungous hyphae. 

 Fig. 7. Section of the compact sclerotial wall together with the less dense 



subjacent tissue. 

 Fig. 8. Xylem cells from apparently normal tissue. 

 Fig. 9. Basidia of Poria Cocos. 

 Fig. 10. Basidiospores. 

 Fig. 11. Tissue from a rhizomorph which formed from a sclerotium which was 



unearthed and then partially buried in leaf mold for two months. 

 Figs. 1, 2, 7, 8, 9, and 11 are drawn to the same scale. 



Literature Cited 



1. Anonymous. Indian Bread or Tuckahoe. Bull. Mo. Bot. Garden 9: 71- 



75, pis. 20-21. 1921. 



2. Banning, Mary E. The Tuckahoe. Bull. Torr. Bot. Club 9: 125. 1882. 



3. Beverley, Robert. The history and present state of Virginia, London, 



1722. (Vide p. 153). 



4. Campbell, Chas. History of the colony and ancient dominion of Vir- 



ginia. Philadelphia, 1860. (Vide p. 75). 



5. Clayton, John. Flora Virginica. Lyons, 1762. 



6. Fries, Elias. Syst. Mycol. 2: 242-243. 1823. 



7. Gore, J. II. Tuckahoe or Indian Bread. Smithsonian Institution Ann. 



Kept. 1881, p. 687-701, fig. 5. 



8. Gussow, H. T. The Canadian Tuckahoe. Mycologia 11: 104-110, pis. 



7-9. 1919. 



9. Kalm, Petee. Travels into North America. Translated by John R. 



Foster, London, 1772. (Vide Vol. 1, pp. 388-389). 



10. LOCKWOOD, S. The Tuckahoe. Hull. Torr. I'.ot. Cluh 9: 152 3. 1>S2. 



11. MacBride, James. Trans. N. Y. Philosophical See, New York, 1817. 



