Slideshow image
Perideridia americana (Nutt. ex DC.) Rchb.
Family: Apiaceae
Perideridia americana image
Stems 6-15 dm, sparingly branched; lvs ovate-oblong, the lower to 2 dm, thrice pinnately compound, with narrowly oblong ultimate segments; upper lvs once or twice compound with linear segments 1-3 cm, the uppermost lvs often simple; rays 7-14; pet white; fr broadly ovate to suborbicular, 3-5 mm; 2n=40. Moist prairies and open woods; Mo., se. Kans., and n. Ark. to Ill., O., Ky., Tenn., and Ala. May, June. (Eulophus a.)

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
From Flora of Indiana (1940) by Charles C. Deam
A rare plant in a few of our western counties. Our only reports are from Jasper and Vigo Counties. I have collected it in Benton, Newton and Spencer Counties. It is a typical prairie plant and is usually found in such a habitat. My Spencer County specimen, however, was found among large post oaks in a low, flat, post oak, pin oak, and swamp white oak flat about 4 miles northwest of Chrisney. This area is a low, flat woods about a half mile wide on the east side of Little Pigeon Creek. The soil is a hard, white, slightly acid clay in which are found several plants distinctly southwestern in their distribution.
Perideridia americana image
Mona Terwedow  
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Mona Terwedow  
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Mona Terwedow  
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Stephanie Harvey  
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Mona Terwedow  
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Perideridia americana image
Mona Terwedow  
Perideridia americana image
Perideridia americana image