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Article from Bean's Trees and Shrubs Hardy in the British Isles
'Piptanthus nepalensis' from the website Trees and Shrubs Online (treesandshrubsonline.
There are no active references in this article.
See P. laburnifolius, page 249. This species has been reintroduced from Nepal and is likely to become more widely available than it is at present.
P. forrestii, and other species based on Forrest collections, are included by Turner in P. nepalensis, but P. tomentosus is recognised.