TWO NEW CRUCIFERAE 
259 
Fig. 34. Lepidium perfoliatum; left hand specimen from Grinnell; right hand 
specimen from Kelley. Photo by Mr. Richardson, 
who has kindly sent me a specimen. However, Dr. Ada Hayden 
of the Iowa State College, while collecting weed specimens with 
her class in September, 1920, found it growing on the Inter-urban 
right-of-way at Kelley, Iowa. The plants at that time were very 
mature and bore only the entire leaves. Some of the seeds were 
at once sown in the writer’s garden, and a number germinated 
and early the following spring showed pretty rosettes of pinnately 
dissected leaves. This diversity in foliage is very remarkable, 
and Engler and Prantl make particular mention of it in their 
Naturlichen PHansenfamilien. The finely dissected leaves con- 
tinue to appear till the plant is several inches high, when the en- 
tire perfoliate ones appear on the upper portion of the stem and 
