[pbs] FW: Glads from Georgia
J.E. Shields
jshields at indy.net
Tue Mar 6 14:40:37 EST 2007
Dell raises a very interesting point. How different are the Eurasian glads
from the African glads?
Boyce, I presume the Rep. of Georgia glads look more like G. imbricatus
rather than like byzantinus or italicus?
I seem to vaguely recall having seen somewhere once that some cultivated
glads are thought to have originated from a Eurasian species X African
species cross. I believe the Eurasian glads have 2n=80, maybe? According
to Goldblatt & Manning, both G. oppositiflorus salmoneus and G. saundersii
have 2n=30.
I have here, perfectly hardy outdoors in the ground (bar mice!), the
Eurasian species GG. communis byzantinus, "caucasicus," imbricatus,
illyricus, and italicus. The G. "caucasicus" looks like G. imbricatus to
me, but are hardier here than Janis Ruksans' G. imbricatus.
The G. imbricatus/caucasicus require chilling to germinate their seeds AND
the bulbs must be chilled to get them to grow in the spring after their
winter dormancy.
I have G. oppositiflorus salmoneus that have survived several winters
outdoors in the garden here, but that depended on the location and the
soil. Not all the batches of G. o. salmoneus made it. In an unimproved
clay bed, they lasted only one winter. G. x-gandavensis has lasted quite a
few winters in the same bed. G. dalenii perished in a couple spots where
it was tried (clay bed, raised rock garden bed).
I tried crossing G. saundersii (in pots) X G. oppositiflorus salmoneus (in
the ground) but did not seem to get much in the way of seeds. Maybe I
should try again. Their blooms overlapped here in August last summer
To cross a Eurasian species (bloom in late spring/early summer) with an
African species (bloom late summer/early autumn), I'll have to get
organized and store pollen. "Getting organized" can present a huge
inertial barrier.
Jim Shields
in central Indiana (USA)
At 01:35 PM 3/6/2007 -0500, you wrote:
>Hmmm. Maybe species names like "byzantinus" and "italicus" should have been
>a tip off.
>
>I still would like to know how they got there and if there are still any
>species in between, geographically.
>
>Dell
*************************************************
Jim Shields USDA Zone 5 Shields Gardens, Ltd.
P.O. Box 92 WWW: http://www.shieldsgardens.com/
Westfield, Indiana 46074, USA
Tel. ++1-317-867-3344 or toll-free 1-866-449-3344 in USA
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