Talk:Glastonbury Abbey

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[edit] Thorn

Is the thorn definitely monogyna? Some references on the web suggest that it's a laevigata. The difference can be found in this key:

2. Leaves deeply 5-7 lobed, leaf incision index > 50%, lobes acute; style and nutlet 1

.......................................... 1. C. MONOGYNA

2. Leaves shallowly 3-lobed, leaf incision index usually < 30%, lobes obtuse, terminal usually largest; styles and nutlets 2

......................................... 2. C. LAEVIGATA

Anyone know for sure? —Ashley Y 11:41, 2005 Mar 31 (UTC)

Isn't Crataegus naturally more variable than our organizing system permits? Isn't the Glastonbury Thorn one of numerous hawthorn hybrids? Aren't chromosome counts as essential in categorizing species as a leaf incision index? I don't think there is a "for sure", only a most recent formulation. --18:03, 31 Mar 2005 (UTC)

So is it a cross? What do the leaves and nutlets look like? —Ashley Y 02:19, 2005 Apr 1 (UTC)