Eranthis hyemails 'Guinea Gold'
totototo@telus.net (Tue, 18 Mar 2008 12:12:18 PDT)

On 18 Mar 08, at 11:59, Jim McKenney wrote:

There are those who regard nomenclatural matters as mattes of right
and wrong: in their view, there is only one right way to do things. I
don’t look at it that way at all.

Oh, come now, what's a little bolshevism between friends?

I’ve been thinking a lot about winter aconites lately, and these
seemingly simple little flowers offer some examples of just how
opinion comes to influence nomenclature.

In the heading for this post I’ve deliberately used the provocative,
benignly provocative I hope, combination Eranthis hyemalis ‘Guinea
Gold’.

Those of you who know your winter aconites know that ‘Guinea Gold’ was
raised in the early twentieth century and presented to the gardening
public as a hybrid between what were then known as Eranthis hyemalis
and E. cilicica. I believe it was Bowles who coined the name
tubergenii for the hybrid group. Until recently, the usual citation of
the name would have been Eranthis x tubergenii ‘Guinea Gold’.

Janis Ruksans, in his book "Buried Treasure", mentions this plant as
one he's received from many sources and doesn't think he's ever
gotten the "real thing." I have a patch labelled "Eranthis ×
tubergenii" that originated at Gothenberg and, afaik, doesn't pretend
to be 'Guinea Gold'. Its flowers are rather small, but a deep
saturated yellow, with darkish foliage, just as Ruksans describes.

Since both specific names are validly published, names for this plant
are valid whether they presume one species or two.

Some modern botanists regard Eranthis hyemalis and E. cilicica as
conspecific. In that view, ‘Guinea Gold’ is not a hybrid – at any
rate, not an interspecific hybrid. That allows it to be cited as
Eranthis hyemalis ‘Guinea Gold’: both parents of this cultivar are of
the species Eranthis hyemalis.

There is another formula one encounters: Eranthis hyemalis Tubergenii
Group ‘Guinea Gold’. I’m not sure what to make of this combination: I
assume it is tacit recognition of the existence of more than one
‘Guinea Gold’. In this view, if I’ve got it right, although the
original ‘Guinea Gold’ was a clone, this combination of names
recognizes that not only does more than one plant now go around under
the name ‘Guinea Gold’, but also that the true, original plant is
seemingly lost in the crowd.

What that fancy names means is "a particular clone called Guinea
Gold, which is a one of a flock of similar looking plants, the
Tubergenii Group, that can be distinguished from run of the mill
Eranthis hyemalis. Got it?

Some people throw up their hands in the face of such complexities. I
relish them as a way of attaining more finely nuanced expressions of
the relationships involved. Is one right and the others wrong? I
don’t think so. Like everything else in science, the scientific basis
of nomenclature is an if…then proposition. If you believe that
Eranthis hyemalis and E. cilicica are discrete species, you write
Eranthis x tubergenii ‘Guinea Gold’.

If you believe E. hyemails and E. cilicica are conspecific, you write
Eranthis hyemalis ‘Guinea Gold’.

If you believe the plants going around under the name ‘Guinea Gold’
cannot with certainty be attributed to the original clone, then you
write Eranthis Tubergenii Group ‘Guinea Gold’ or even Eranthis
hyemalis Tubergenii Group ‘Guinea Gold’.

Or Eranthis × tubergenii.

But is one of these right and the others wrong? Get out the boxing
gloves!

They're all correct. Remember that taxonomy is largely a science of
opinion, not hard facts, so the only measure of validity is whether
the publication of a name met the technical rules such as Latin
description, etc.

My best guess is that the cross has been made more than once and the
original 'Guinea Gold' is long lost track of in a crowd of
lookalikes. It probably still exists in some gardens, as eranthis
seem to be pretty permanent plants, but who knows?

--
Rodger Whitlock
Victoria, British Columbia, Canada
Maritime Zone 8, a cool Mediterranean climate

on beautiful Vancouver Island