This section is from the book "The Gardener's Monthly And Horticulturist V26", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
In the June number of the GARDENERS' MONTHLY, this plant is said to be rare around Philadelphia. I have found it quite abundant in restricted areas in Chester county. In some of the central regions of the State, I find it really very abundant. Another plant, Cypripedium acaule, Darlington in his "Flora Cestrica," says is rare around Philadelphia; but I have found it abundant on the North Valley Hill, in Chester county. Obolaria Vir-ginica is also abundant enough, in the very restricted areas. Lewisburg, Pa.
*Vittmack: Sitzunzsber, Ges. naturf. Treunde zu Berlin, June 19,1879.