Sonoran Desert / Arizona Species?

Mary Sue Ittner via pbs pbs@lists.pacificbulbsociety.net
Tue, 28 Dec 2021 12:50:06 PST
Leo has written a very complete and helpful response to the question 
posed in a previous email about how to grow a number of Arizona species. 
The taxonomists have been busy and have now decided the name 
Dichelostemma capitatum is a synonym for Dipterostemon capitatus and 
named 3 taxa. After much resistance I finally got around to updating the 
wiki to reflect this. I guess we can continue to call it blue dicks. The 
desert species has been named Dipterostemon capitatus ssp. pauciflorus 
(Torr.) R.E. Preston. Besides the difference in where it grows, it is 
distinguished from ssp. capitatus by white or streaked purple instead of 
dark blue or purple bracts at the tops of the stem and flowers that grow 
on much longer pedicels (6-34 mm vs. 2-12 mm). There are also only 2-5 
flowers in the average umbel. In ssp. capitatum there are 2-16. It's 
always a challenge to figure out photos on the wiki from the past when 
these kind of changes are made. I added a few photos from iNaturalist 
for this subspecies and I think some photos from Nhu could be it as well 
based on the location and the long pedicel. But he also had photos from 
that location that did not appear to have the long pedicel which in my 
mind raises some questions although perhaps those flowers would 
ultimately have the long pedicel once they were farther along. It's 
possible that seed of this species may be found under both names.
> There are also the very widespread and easy to grow Calochortus nuttallii and Dichelostemma capitatum, which has been called Dichelostemma pulchellum.
>
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