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Re: Amano Pearl Grass
I just checked the Amano pubs and he does have a 2-leaf per joint plant
that he calls Micranthemum umbrosum Pg 75 Nature Aquarium World Bk2. In
that picture, I see two distinct plants; this Micranthemum umbrosum
2-Leaf/joint and Micranthemum micranthemoides typically what I call
babytears 3-4 leaves/joint:
http://www.vectrapoint.com/main/photo/aquascape/Images/ga3-JPEG.html . I
looked through the entire book and I never found a picture of this plant I
know as Amano Pearlgrass w/ 2-leaves/joint:
http://floridadriftwood.com/amanopearlgrass.jpg
The upshot is I agree that there are at least 3 different plants. Two
double-leafed plants and one 3-4 leaf per/joint plant.
>>The plant that was offered at the AGA conference and which Amano gave me
when I visited him in Niigata __SHOULD NOT__ be called Hemianthus
micranthemoides. This plant has 2 leaves at each node which alternate in
direction. It also tends to grow in a more informal manner.
>>>http://www.mindspring.com/~aquaristics/Micranthemum-sp-small.jpg
OK! I'll go w/ that. But then what IS its species name? Micranthemum sp
what? I'll go with Micranthemum micranthemoides var. Pearlgrass.
>>>H. micranthemoides also has 3-4 leaves per node and it too is native to
>>>America. It's leaves are similar in size to the other Hemianthus species
>>aka "pearl grass"). Umbrosum has larger leaves unless the plant is starved
>>>of macronutrients.
If I understand you correctly, H. micranthemoides is therefore yet ANOTHER
plant w/ 3-4 leaves per node/joint? Let's see that's:
1. Hemianthus micranthemoides ................................. 3-4 leaves
per node
(never seen a plant like this as you described it)
2. Micranthemum umbrosum ....................... 2-LARGE distinctly shaped
leaves/node. (NAW bk#2 pg 45)
3. Micranthemum micranthemoides ............ 3-4-Leaves per node
(NAW bk#2 pg 45)
4. Micranthemum micranthemoides var. Pearlgrass? ...... 2-small, elongated
leaves/node. http://floridadriftwood.com/amanopearlgrass.jpg
Where we still disagree, is on Hemianthus micranthemoides and Micranthemum
micranthemoides. I think they are the same plant. I've yet to see two
distinct 3-4 leaf node plants of this sort that merit their own scientific
names.
Eliminate Green Water and Hair Algae:
http://www.floridadriftwood.com/alfloraapm.html