Hello Once Again,

Here's another short story of a conundrum I face. While walking with a
friend in his neighborhood we passed a house with a nice yard cover with
what I suppose was yet another Ivy. This ivy was being use as ground
covering as the whole front yard was nicely cover with it. I mentioned
wanting a clipping and he proceeded to yank a stem out of the ground and
gave it to me.

I took it home, cut it into five segments and placed them in it's own
planter and the same generic soil that I have my other Ivies in. The leaves
have since died (one of which is pictured) which I anticipated but one of
the stems has budded. My question is, just what kind of Ivy is this or
better yet is it even an Ivy? Also, can I grow it indoors under the 150W
incandescent bulb without some special treatment?

Here is a picture of the dead clipped leaf and again thank you for any
answers and advise.

http://cactuscowboy0.tripod.com/Ivy2.htm

Cowboy

one of the stems has budded. My question is, just what kind of Ivy is this
or better yet is it even an Ivy? Also, can I grow it indoors under the 150W
incandescent bulb without some special treatment?

This time you have Hedera helix, English ivy. You can probably grow it indoors,
but it will want a little more light than the pothos, yet it wants to be
cooler. It will be better off on a cool windowsill. Also, especially since it
came from outdoors, English ivy is susceptible to spider mites and many other
ills. Keep a close watch on it.

Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)

"Iris Cohen" wrote in message
...
one of the stems has budded. My question is, just what kind of Ivy is
this
or better yet is it even an Ivy? Also, can I grow it indoors under the
150W
incandescent bulb without some special treatment?

This time you have Hedera helix, English ivy. You can probably grow it
indoors,
but it will want a little more light than the pothos, yet it wants to be
cooler. It will be better off on a cool windowsill. Also, especially since
it
came from outdoors, English ivy is susceptible to spider mites and many
other
ills. Keep a close watch on it.


Iris, how could you tell that's H. helix and not another weakly /
sporadically lobed species e.g. H. algeriensis Hibberd?

Iris, how could you tell that's H. helix and not another weakly
/sporadically lobed species e.g. H. algeriensis Hibberd?

Hedera helix is the species most likely to be grown as an outdoor ground cover
in the temperate US. Hedera algeriensis & H. canariensis are not that hardy.
Also, it looks more like the typical outdoor H. helix. Not that it matters. The
instructions for growing it indoors are essentially the same.

Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)

"Iris Cohen" wrote in message
...
Iris, how could you tell that's H. helix and not another weakly
/sporadically lobed species e.g. H. algeriensis Hibberd?

Hedera helix is the species most likely to be grown as an outdoor ground
cover
in the temperate US. Hedera algeriensis & H. canariensis are not that
hardy.
Also, it looks more like the typical outdoor H. helix. Not that it
matters. The
instructions for growing it indoors are essentially the same.

Thanks. The same would be true here, but H. colchica is also popular as
ground cover. H. algeriensis is grown indoors or on patios but is only
occasionally established in the wild for any length of time, and then mostly
by mild coasts.

What's the difference between H. algeriensis and H. canariensis, by the way?

What's the difference between H. algeriensis and H. canariensis, by the way?


H. algeriensis is always found in the company of camels. H. canariensis is
bright yellow, but it doesn't sing.

Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)

Thanks, Iris. Does it have a serious answer as well? :-)

I ask because I can't find a UK botanical reference that separates them, and
horticultural sources seem to apply the same cultivar names to either
specific quite happily.

"Iris Cohen" wrote in message
...
What's the difference between H. algeriensis and H. canariensis, by the
way?


H. algeriensis is always found in the company of camels. H. canariensis is
bright yellow, but it doesn't sing.

Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)

Does it have a serious answer as well?

Hedera algeriensis is apparently a horticultural name, & is considered a
synonym of Hedera helix. Hedera canariensis was reported from the Canary
Islands, but it was published almost 200 years ago, & may also be a
horticultural variant. IPNI fainted at that point, so I couldn't get any more
information.

Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)

Aha. The plot thickens.

Stace (New Flora of the British Isles, 2nd edn, 1997) reckons H. algeriensis
Hibberd, which he says is _not_ the same as H. canariensis Willd., but _is_
the same as some others' H. canariensis, is a distinct species and can be
separated from H. helix on the colour and form of the hairs on leaves and
young stems, and then from H. colchica on the number of rays on the hairs.
He gives 2n=48 for H. helix ssp. helix, 2n=96 for H. helix ssp. hibernica,
2n=96 for H. algeriensis, and 2n=192 for H. colchica.

Clement and Foster (Alien Plants of the British Isles, 1994) reckon that H.
algeriensis Hibberd and H. canariensis Willd. _are_ for the same plant,
which should be H. helix ssp. canariensis (Willd.) Cout., but as theirs is
simply a catalogue they don't give diagnostics.

I don't have Flora Europaea to hand, unfortunately. (Or perhaps
fortunately - it might give me another story :-)

IPNI gets you first usage, but isn't much good on relating these
nomenclatures, unfortunately.

"Iris Cohen" wrote in message
...
Does it have a serious answer as well?

Hedera algeriensis is apparently a horticultural name, & is considered a
synonym of Hedera helix. Hedera canariensis was reported from the Canary
Islands, but it was published almost 200 years ago, & may also be a
horticultural variant. IPNI fainted at that point, so I couldn't get any
more
information.

Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)

Martin Rand schreef
Aha. The plot thickens.

Stace (New Flora of the British Isles, 2nd edn, 1997) reckons H.
algeriensis Hibberd, which he says is _not_ the same as H. canariensis
Willd., but _is_ the same as some others' H. canariensis, is a distinct
species and can beseparated from H. helix on the colour and form of the
hairs on leaves and young stems, and then from H. colchica on the number of
rays on the hairs. He gives 2n=48 for H. helix ssp. helix, 2n=96 for H.
helix ssp. hibernica, 2n=96 for H. algeriensis, and 2n=192 for H. colchica.

Clement and Foster (Alien Plants of the British Isles, 1994) reckon that
H algeriensis Hibberd and H. canariensis Willd. _are_ for the same plant,
which should be H. helix ssp. canariensis (Willd.) Cout., but as theirs is
simply a catalogue they don't give diagnostics.

I don't have Flora Europaea to hand, unfortunately. (Or perhaps
fortunately - it might give me another story :-)

IPNI gets you first usage, but isn't much good on relating these
nomenclatures, unfortunately.

+ + +
Yes, IPNI just gives first publication. IPNI reports a name by "Hort." for
both Hedera algeriensis and Hedera canariensis: these may or may not be the
same as Hedera algeriensis Hibberd and Hedera canariensis Willd.

Since the RHS Plantfinder accepts both species there must be something in
it.
PvR