The Mycorrhiza of Zeuxine Strateumatica

SUMMARY

1.	Rhizoctonia mucoroides has been shown to be the mycorrhizal associate of Zeuxine strateumatica in Florida.
2.	Seeds of Zeuxine strateumatica sown on cultures of Rhizoctonia mucoroides growing on the “Sb” medium in 500 c.c. flasks germinated in 6–8 months from the time of sowing.
3.	Better germination was obtained in flasks kept in diffuse light in the greenhouse than in those placed in the dark.
4.	No germination was obtained asymbiotically.
5.	All indications are that the relation of fungus to orchid is, in this case, a specific one.
6.	Because of its rapid development, Zeuxine strateumatica is worthy of future experimentation in the field of orchid mycorrhiza.