Bamboo Identification in Oregon and Washington (preliminary)

So far, we have found five wild and quasi-wild bamboo in Oregon and Washington. They are Arrow Bamboo (Pseudosasa japonica), Broad-leaf Bamboo (Sasa palmata), and members of the genus Phyllostachys. Obviously, we will be very interested to see observations of additional species in our area.

Phyllostachys species have a groove or flat surface extending up the stem from one node to the next. The leaf sheaths low on the stems fall of early. They typically have 2 branches per node on the main stem. Pseudosasa japonica and Sasa palmata lack that groove and have persistent leaf sheaths. I think both have just one branch per node; I'm sure Ps. japonica does. Pseudosasa is a taller, sturdier species with small, narrow leaves (to 2 inches, 5 cm, wide). Sasa palmata is shorter and more slender and has broader leaves (to 3.5 inches, 9 cm, wide).

Although the name Common Bamboo (Bambusa vulgaris) is commonly applied to Oregon and Washington observations, it is not common and probably not escaping (if present) in these states.

Note: We're at the very beginning of the learning curve for bamboo identification. We're improving, but so far we have just enough knowledge to be dangerous, so take any ID's we make with a grain of salt.

[Edited April 16. We are learning.]

הועלה ב-אפריל 12, 2023 03:19 אחה"צ על ידי sedgequeen sedgequeen


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