This isn't the
first time that I've been told I don't make myself very clear. :-) I'm really
not much of a writer, I guess. When I was talking about seedlings, "first or
second leaves" meant the first to appear, and "newer leaves" meant the ones that
came a few weeks later, the fourth, fifth leaves etc. If the fourth leaf is
brighter than the first, then the first has become greener than it was to begin
with in the time it took for the fourth leaf to emerge. Therefore this
seedling will be a plant that emerges yellow and turns greener with time, and it
is viridescent. If the fourth leaf emerges greener than the first, then the
first one has turned more yellow, and the plant will be lutescent.
I hope this is
clearer, but if it isn't let me know and I'll try again.
Bill, I thought that a gradual leaf
color change to greener as new leaves emerged meant that the plant was
viridesent, and that a change toward yellow indicated lutescence. You have
said the opposite! Slip of the fingers or am I mistaken? Barbara
definitions given by Pat (and George Schmid) explain the terms. When it
comes to gold and partly gold hostas we see one of these phenomena. The
tissue will become more or less green as the season progresses. Some change
dramatically, and others only a little, but they all change color one way or
the other. If the conditions stay the same this should be a steady, gradual
change. Other things, especially sunlight, affect the color as well and
must be taken into account, but golds fall into one category or the other.
It is my thinking that lutescence is a sieboldiana/tokudama trait that does
not come from any other species. Most if not all species produce gold
seedlings and all the ones I've grown from other species were viridescent.
When it comes to hybrids, I would say that only hybrids with
sieboldiana/tokudama in their parentage will show lutescence. If both
types result from a specific cross, the lutescent ones usually outnumber the
tell very early which a seedling is by comparing the first or second leaves
to the later ones. If the new ones are brighter yellow, than it is
viridescent. If the newer ones are greener, it's lutescent. This becomes
less obvious the more fertilizer you use, as nitrogen makes them all get a
anybody found anything different to be the case?
Would any of you fine Ladies
and Gentlemen go into some detail in
explaining lutescence and
viridescent quality in leaf color.