This section is from the book "The Gardener's Monthly And Horticulturist V18", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
When this was first brought to the attention of the Gardener's Monthly, now many years ago, we expressed the opinion that it was of fungoid origin. Of course we had to make the guess from analogy, as it requires great knowledge and skill in microscopical studies to be able to work these matters up positively. Mr. Worthington G. Smith has recently done this, and finds it is a fungus - a new one - and he names it Urocystis Gladioli.