dissemination mechanism?

Peter Taggart petersirises@gmail.com
Sat, 21 Sep 2013 12:07:12 PDT
I concur. Woodland in Britain, too dark to support ground covering plants
except perhaps Hedera helix, when opened up takes about five years to
become carpeted with Hyacinthoides non scripta, Narcissus, Rannunculus
ficaria, Anenemone nemerosa, Iris foetidissima, Mercurialis perennis and
many others will appear -as if from no-where.
Peter UK

On Sat, Sep 21, 2013 at 5:37 PM, Kathleen Sayce <ksayce@willapabay.org>wrote:

> I agree with Jane about shade tolerance. On Saddle Mtn in northwest
> Oregon, a storm in 2009 opened up a formerly densely shaded stand of
> Douglas-fir, and now the understory is coming into dense foliage cover and
> abundant flowers. Included in this formerly light-starved, tolerating the
> shade group
> >From observations made in other forests in the Pacific Northwest,
> Pacifica Iris persist in sometimes very dense shade for decades, waiting
> for light after wind throw or forest fires, to come into full growth and
> bloom. These include Iris tenax, innominata, douglasiana, thompsonii, and
> other species.

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