Spiraea arcuata Hook. f.

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Credits

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

Recommended citation
'Spiraea arcuata' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/spiraea/spiraea-arcuata/). Accessed 2020-06-05.

Genus

Glossary

receptacle
Enlarged end of a flower stalk that bears floral parts; (in some Podocarpaceae) fleshy structure bearing a seed formed by fusion of lowermost seed scales and peduncle.
Tibet
Traditional English name for the formerly independent state known to its people as Bod now the Tibet (Xizang) Autonomous Region of the People’s Republic of China. The name Xizang is used in lists of Chinese provinces.
acute
Sharply pointed.
apex
(pl. apices) Tip. apical At the apex.
bract
Reduced leaf often subtending flower or inflorescence.
compound
Made up or consisting of two or more similar parts (e.g. a compound leaf is a leaf with several leaflets).
entire
With an unbroken margin.
exserted
Protruding; pushed out.
glabrous
Lacking hairs smooth. glabrescent Becoming hairless.
inflorescence
Flower-bearing part of a plant; arrangement of flowers on the floral axis.
lax
Loose or open.
lustrous
Smooth and shiny.
umbel
Inflorescence in which pedicels all arise from same point on peduncle. May be flat-topped (as in e.g. Umbelliferae) to spherical (as in e.g. Araliaceae). umbellate In form of umbel.

References

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Credits

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

Recommended citation
'Spiraea arcuata' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/spiraea/spiraea-arcuata/). Accessed 2020-06-05.

A medium-sized shrub with arching, strongly ribbed reddish brown stems, which are finely woolly when young, more or less glabrous by autumn. Buds hairy, slender, acute, longer than the petioles. Leaves dark green, shortly stalked, those on the strong shoots obovate or obovate-elliptic, to about 12 in. long, mostly crenately toothed or lobulate at the apex, on weaker shoots smaller and mostly entire; they are glabrous with somewhat impressed main veins above, undersides glabrous except for hairs on the prominent veins, margins with a woolly ciliation. Flowers typically pink but sometimes white, borne in early summer in dense or lax umbel-like or compound clusters up to about 112 in. wide, terminating short leafy laterals. Peduncles finely woolly, each furnished with a bract, which is leaf-like in the outer part of the inflorescence. Receptacle shallow, glabrous. Follicles well exserted, glabrous and lustrous; styles inserted below the apex, outward-pointing.

Native of the Himalaya from Nepal (perhaps farther west) to S.W. China, and of S. Tibet. An ornamental and unusual spiraea, perhaps allied to S. gemmata, though differing from it in foliage. It is still rare in gardens.


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