Spiraea rosthornii Pritz.

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Credits

Article from Bean's Trees and Shrubs Hardy in the British Isles

Recommended citation
'Spiraea rosthornii' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/spiraea/spiraea-rosthornii/). Accessed 2020-02-26.

Genus

Glossary

glabrous
Lacking hairs smooth. glabrescent Becoming hairless.
lanceolate
Lance-shaped; broadest in middle tapering to point.
ovate
Egg-shaped; broadest towards the stem.
pubescent
Covered in hairs.

References

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Credits

Article from Bean's Trees and Shrubs Hardy in the British Isles

Recommended citation
'Spiraea rosthornii' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/spiraea/spiraea-rosthornii/). Accessed 2020-02-26.

A deciduous shrub up to 6 ft high, of spreading habit; young shoots slightly downy. Leaves ovate to lanceolate, slenderly pointed, broadly wedge-shaped or almost rounded at the base, sharply, jaggedly, unevenly toothed; 112 to 3 in. long, 34 to 114 in. wide, bright green above, more or less downy on both surfaces but especially beneath; stalk 18 to 14 in. long. Flowers white, about 14 in. wide, produced in early June in flattish corymbs 2 to 312 in. across that terminate leafy shoots; flower-stalks all downy.

Native of W. Szechwan, China; introduced under Wilson’s No. 965 in 1909. Nearly related to S. longigemmis and having the same curious elongated winter buds, but that is a glabrous shrub as regards the young shoots and nearly so as regards the leaves.

S. prattii Schneid. – Made synonymous with this species in Plantae Wilsonianae, vol. I, this seems to differ in its sturdier growth; more compact, densely flowered, rounded corymbs; smaller, more abundant and more densely pubescent leaves. It was found by A. E. Pratt in W. Szechwan (No. 190).


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