On Tue, 22 Jun 2010 05:39:13 -0700 (PDT), Rob
wrote:

Last year, this group helped me to identify oxalis as a very invasive
weed in my garden.
I seem to have two sorts:
one grows from little groups of bulbs (which I have seen called
bulbils). At this time of the year each bulb produces a oxalis-typical
triplet of heart-shaped leaves on a single long stem.
The other sort grows from a relatively deep, thin tap root and above
ground has many leaf triplets on several stems.

Are these different species of oxalis ?
Or, are they the same species at different stages of development ?

Thanks in advance.

I grow for enjoymentpink flowered oxalis articulata. It grows from a
corm (?) which grows a new one on top of the old each year, so you get
a clump of them a bit like vertaebrae. My originals came from my
parents' garden and before that from my Grandfather.
It flowers all summer and is NOT invasive. Clumps can be divided,
I also have 3 others which are invasive. I have wood sorrel which
spreads happily about by seed and is easily removed if necessary.
The other two are a nuisance. Similar plants, spreading over the
ground by creeping roots and also by explosive seed pods, One has
bronze leaves, the other green and both have yellow flowers,

Pam in Bristol

In message , Pam Moore
writes
On Tue, 22 Jun 2010 05:39:13 -0700 (PDT), Rob
wrote:

Last year, this group helped me to identify oxalis as a very invasive
weed in my garden.
I seem to have two sorts:
one grows from little groups of bulbs (which I have seen called
bulbils). At this time of the year each bulb produces a oxalis-typical
triplet of heart-shaped leaves on a single long stem.
The other sort grows from a relatively deep, thin tap root and above
ground has many leaf triplets on several stems.

Are these different species of oxalis ?
Or, are they the same species at different stages of development ?

Thanks in advance.

I grow for enjoymentpink flowered oxalis articulata. It grows from a
corm (?) which grows a new one on top of the old each year, so you get
a clump of them a bit like vertaebrae. My originals came from my
parents' garden and before that from my Grandfather.
It flowers all summer and is NOT invasive. Clumps can be divided,
I also have 3 others which are invasive. I have wood sorrel which
spreads happily about by seed and is easily removed if necessary.
The other two are a nuisance. Similar plants, spreading over the
ground by creeping roots and also by explosive seed pods, One has
bronze leaves, the other green and both have yellow flowers,

Pam in Bristol

Your two nuisances are probably Oxalis exilis (creeping, foliage always
green, yellow flowers, 5 stamens) and Oxalis corniculata (creeping,
foliage often bronze, yellow flowers, 10 stamens). There are several
other Oxalides which can be pests, but the other one I've encountered is
Oxalis stricta (erect, foliage often bronze, yellow flowers, 10
stamens).

I used to grow Oxalis adenophylla (cormous) and Oxalis triangular
(rhizomatous).
--
Stewart Robert Hinsley

This is all very interesting, but can someone answer the OP:
why some have "tap roots" and some spring from "bulblis" ?
Friendly greetings,
Rob

Stewart Robert Hinsley wrote:
In message , Pam Moore
writes
On Tue, 22 Jun 2010 05:39:13 -0700 (PDT), Rob
wrote:

Last year, this group helped me to identify oxalis as a very invasive
weed in my garden.
I seem to have two sorts:
one grows from little groups of bulbs (which I have seen called
bulbils). At this time of the year each bulb produces a oxalis-typical
triplet of heart-shaped leaves on a single long stem.
The other sort grows from a relatively deep, thin tap root and above
ground has many leaf triplets on several stems.

Are these different species of oxalis ?
Or, are they the same species at different stages of development ?

Thanks in advance.

I grow for enjoymentpink flowered oxalis articulata. It grows from a
corm (?) which grows a new one on top of the old each year, so you get
a clump of them a bit like vertaebrae. My originals came from my
parents' garden and before that from my Grandfather.
It flowers all summer and is NOT invasive. Clumps can be divided,
I also have 3 others which are invasive. I have wood sorrel which
spreads happily about by seed and is easily removed if necessary.
The other two are a nuisance. Similar plants, spreading over the
ground by creeping roots and also by explosive seed pods, One has
bronze leaves, the other green and both have yellow flowers,

Pam in Bristol

Your two nuisances are probably Oxalis exilis (creeping, foliage always
green, yellow flowers, 5 stamens) and Oxalis corniculata (creeping,
foliage often bronze, yellow flowers, 10 stamens). There are several
other Oxalides which can be pests, but the other one I've encountered is
Oxalis stricta (erect, foliage often bronze, yellow flowers, 10 stamens).

I used to grow Oxalis adenophylla (cormous) and Oxalis triangular
(rhizomatous).