Robinia × ambigua Poir.

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Credits

New article for Trees and Shrubs Online.

Recommended citation
'Robinia × ambigua' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/robinia/robinia-x-ambigua/). Accessed 2024-03-28.

Genus

Synonyms

  • R. dubia Foucault, not Poir.
  • R. intermedia Soulange-Bodin

Glossary

viscid
Sticky.

References

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Credits

New article for Trees and Shrubs Online.

Recommended citation
'Robinia × ambigua' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/robinia/robinia-x-ambigua/). Accessed 2024-03-28.

A small group of hybrids between R. viscosa and R. pseudacacia, showing the influence of the former in their moderate size, viscid young growths and pink flowers, and of the latter in the usually better developed spines. The type arose in France a few years before 1812 and was at one time cultivated under the name R. dubia, but seems to have become rare. The following members of the group are still available:


'Bella-rosea'

Branchlets viscid, spiny. Flowers deep rosy pink. It is said to have arisen in Holland around 1860.


'Decaisneana'

The branchlets are only very slightly viscid, but the influence of R. viscosa shows in the pink flowers and the reduced size of the stipular spines. It arose in Villevielle’s nursery at Manosque in the department of Basse-Alpes, and was described in 1863. It is said to come more or less true from seed, and no doubt some of its seedlings, deeper in colour than the original, have been propagated; this would explain why there is some variation in colour in ‘Decaisneana’, despite the fact that it is normally propagated by grafting.’Decaisneana’ is perhaps the most handsome of the arborescent robinias, but it needs more than average summer heat if it is to grow and flower well. In cool gardens it flowers sparsely, and is unsuitable for exposed positions, owing to the brittleness of the wood.