Iris anguifuga - pseudo-bulbous??

James Waddick
Tue, 03 May 2011 07:16:04 PDT
>You didn't mention it's coolest trick:  transforming between rhizomes to
>bulbs and back!

Dear Dennis... since you asked...

	Yes I. anguifuga has a number of tricks up its sleeve. If you 
dig the plant in bloom, you'll find what looks like a husky rhizome, 
but as it goes dormant over summer the rhizome shrinks back to a very 
short stubby 'rhizome' with a terminal bud that sort of looks like a 
typical bulb. This reserve is able to produce the fall leaf growth. 
Presumably between the initiation of foliage in fall and the 
withering of flowers in spring, the rhizome is able to extend its 
growth and look perfectly normal again by spring.

	If you , like me, wonder how the genus Iris can include both 
rhizomateous and bulbous species, this one gives you some insight 
into how one anatomy can change to another.

	Oddly this species does not live in a climate that has 
weather extremes or drought. Wonder where this odd change of form 

	I find this all extremely interesting stuff.		Best 
		Jim W.
Dr. James W. Waddick
8871 NW Brostrom Rd.
Kansas City Missouri 64152-2711
Ph.    816-746-1949
Zone 5 Record low -23F
	Summer 100F +

More information about the pbs mailing list