Please help me ID this bamboo.

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jtkach
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Please help me ID this bamboo.

Post by jtkach »

I have been collecting field specimens of bamboo on vacant lots, open land, and where owners have given me permission around the Charlotte NC area for several years. I have run across several different stands and groves and it astounds me how much bamboo is in the area. Where I have found groves in vacant lots and open land I have been trying to identify them, but several pose problems for me. Here is the first of a few post I plan to submit.

The pictures 1, 2, 3, 4, 5, and 7 were all taken at the original stand in February, or around the first of May of the same year when the boo was shooting. Picture 6 and 8 are from my yard where I planted it in 2003. These were topped at about 7ft. to facilitate moving them. The small branches in these pictures grew out of previously dormant nodes in the spring of 2004 and are not typical of the original stand.

From picture 5 you can see most of the stand. It is around 25-30ft, notice the light pole to the left in the image. The largest culms that I have seen which I recorded this past spring are a little over 2.5 inches, and are between 30 and 40ft.

Two things I thought were unusual were that some of the smaller older culms had a zig-zag habit, and as the culms aged they started to get spots all over them. I thought the spots were due to mildew or a fungus from the area or soil they were in which is a little swampy behind the stand, but the two year old culms in my yard are also showing the same spotting. The spots can be rubbed off but reappear after a time. so maybe it is nothing.

The culms in direct light turn yellow those in the center of the stand stay a dull green. Some other characteristics the culms have small vertical ridges but are otherwise smooth. I think I have bored everybody enough here are the pics. What do you think it is?

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jT
John G.
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RE: Please help me ID this bamboo.

Post by John G. »

They all look like 'Vivax' to me but I'm no pro at identification.
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Roy
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Re: RE: Please help me ID this bamboo.

Post by Roy »

John G. wrote:They all look like 'Vivax' to me but I'm no pro at identification.
Definitely a lot of similarities:

New shoot of Phyllostachys vivax
<img src="http://www.bambooweb.info/images/bamboo/P4070013.JPG" alt="Phyllostachys vivax ">
--------------------------
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Southern Tampania de la Floridana Universidad (STFU)
STFU Motto: All Bamboos are not Created Equal; @ STFU, the Search Continues
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David
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RE: Please help me ID this bamboo.

Post by David »

Hello jt,

Pic#1 looks somewhat like vivax. Pics #3,4,5,7 look like viridis. The distant photo has me thinking viridis, because a mature vivax grove has a distinctive look with masses of dark green leaves at the top of the culm, and a weeping kind of habit. The plants in #5 appear more upright and open in habit.

I'm thinking vivax, and viridis are the obvious choices, and I'm leaning toward viridis.

Viridis on close examination will have very small dimples on the culm that are discernable by running ones fingernail gently along the culm. The culm walls of viridis are thicker than vivax, and the culms are heavier. The leaves of viridis will turn yellow in the fall, and winter, and viridis in full sun will have a yellowish look from a distance in fall and winter.

The spots you mention are mildew, and you can wash it off minimal soap (or not) and water.

The small vertical ridges sound like vivax.

So if you weren't already confused I'm sure you are now. What ever it is, it's good looking bamboo, and you are lucky to get it free.

Vivax will tend to have stress fractures in the bases of the larger culms because of its thin walls, and large stature.

David
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ChrisM
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RE: Please help me ID this bamboo.

Post by ChrisM »

Looks very similar to the viridis that everyone helped me id that I have. I believe a cross section cut would rule out vivax and help solidify the viridis thought. Thin wall= vivax, thick=viridis.. correct David
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jtkach
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RE: Please help me ID this bamboo.

Post by jtkach »

Thanks for the input everyone. I will take a cross cut and compare it to some Vivax that is in the area. It will be nice if it is Viridis. Vivax seems to be everywhere around here.
jT
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