On an orchid, an old pseudobulb that may be leafless but is still alive and can be used for propagating a new plant.
backbulb
| Gardener's Dictionary: backbulb |
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 | Gardener's Dictionary. Taylor's Dictionary for Gardeners, by Frances Tenenbaum. Copyright © 1997 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. Read more |
