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From: Hal or Nancy Robinson <robyn82 at BELLSOUTH.NET>
Subject: Re: Arisaema dilatatum germination quandry
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You asked if there were other plants that grew down first.  Well, Danae
ramosa does.  I wondered where all those seeds went.  I suspect that the
wahoo tree an native Euonymus to Tennessee seems to be since it took 2 ye=ars
for them to come up and 2 weeks for a critter to eat the cotelydons off a=ll
but one.
Nancy Robinson  Tennessee  -10 to 100 some years

> > > Many Lilium species are hypogeal germinators, not issuing a leaf un=til
> the second year but producing a bulb below ground.<<
>
> > I gather it's monocots only?<<
>
> No not just monocots.  Paeonias do it - producing radicle and roots in =the
> autumn then cotyledons the next spring.  And of course Cyclamen do it,
> forming a tiny tuber first (often within a week or two of sowing) then
> throwing up a leaf a few weeks later.  What else does it??  Hypogeal
> germination is not confined to monocots but what have they in common?  =Are
> they woodlanders that need to anchor themselves with a root system befo=re
> winter sets in then produce leaves in the following spring?
>
> Diane Clement
> Wolverhampton, West Midlands, UK
> Zone 8