Flowers  in the
Klamath Basin, Oregon
Page 74

Hornseed Buttercup Ceratocephala testiculata syn.  Ranunculus testiculatus aka Bur Buttercup, Curveseed butterwort Poisonous	The rosettes appeared around February 10 about 100yd from the entrance to Bear Valley Rd. The first true leaves popped out about the first week of March.	The soil is alkaline, was a soggy area where water pooled when it rained, but quickly became arid.	Companion plants: Starmoss, Depressed fiddleleaf, and Rough eyelash.	The next three pictures were taken March 10.
.	.	The next three pictures were taken March 19.	.	.
This and the next three pictures were taken March 20.		.	.	This and the next three pictures were taken April 1
	.	.	This and the next three pictures were taken April 22. Given the right conditions, the stems grow quite long.	.
The plants dry out and get quite hard and the seedpods become little stickleburs..	.	This and the next photograph were taken in early February. These are the overwintered burs/fruit.	.

= Poisonous to animal and/or human
= Noxious or Invasive in Oregon
= Crop weed in Oregon
= Federal Noxious weed in Oregon

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Copyright 1998-2004 Colleen D. Bergeron.
Last revised: October 19, 2005.