Sorbus hypoglauca
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Credits
Article from New Trees by John Grimshaw & Ross Bayton
Recommended citation
'Sorbus hypoglauca' from the website Trees and Shrubs Online (treesandshrubsonline.
Genus
Other taxa in genus
- Sorbus americana
- Sorbus amoena
- Sorbus arachnoidea
- Sorbus aucuparia
- Sorbus carmesina
- Sorbus cashmiriana
- Sorbus commixta
- Sorbus coxii
- Sorbus decora
- Sorbus discolor
- Sorbus ellipsoidalis
- Sorbus esserteauiana
- Sorbus fansipanensis
- Sorbus foliolosa
- Sorbus forrestii
- Sorbus glabriuscula
- Sorbus glomerulata
- Sorbus gracilis
- Sorbus helenae
- Sorbus hupehensis
- Sorbus insignis
- Sorbus 'Joseph Rock'
- Sorbus khumbuensis
- Sorbus koehneana
- Sorbus kongboensis
- Sorbus kurzii
- Sorbus lingshiensis
- Sorbus matsumurana
- Sorbus microphylla
- Sorbus muliensis
- Sorbus olivacea
- Sorbus parvifructa
- Sorbus pohuashanensis
- Sorbus poteriifolia
- Sorbus prattii
- Sorbus pseudohupehensis
- Sorbus pseudovilmorinii
- Sorbus randaiensis
- Sorbus reducta
- Sorbus rinzenii
- Sorbus rubescens
- Sorbus rufopilosa
- Sorbus rushforthii
- Sorbus sambucifolia
- Sorbus sargentiana
- Sorbus scalaris
- Sorbus sitchensis
- Sorbus tianschanica
- Sorbus ursina
- Sorbus vilmorinii
- Sorbus wallichii
- Sorbus wilsoniana
Tree to 6 m. Branchlets thick, stiff and to 0.7 cm diameter. Buds 1–2 cm long, conical to ovoid, scales crimson to green with white hairs on the margins and apices. Leaves to 24 cm long, with 8–10 pairs of leaflets. Leaflets leathery, 5.6 × 1.2 cm, upper surface glabrous, lower surface white and densely papillose, margins dentate at apex or to two-thirds of their length; stipules persistent and leafy, 1.7 × 2 cm, lobed and dentate; petiole with glabrous sheathing at base. Inflorescences dense and corymbose, erect, even when in fruit. Fruit white or with a slight crimson flush, broadly turbinate, 0.55–0.75 × 0.8–1 cm; calyx lobes hardly fleshy, carpels five. Sexual diploid (2n = 34). McAllister 2005a. Distribution CHINA: Yunnan. Habitat Open hillsides with Abies and Rhododendron. USDA Hardiness Zone 6. Conservation status Not evaluated.
The pale undersides to the large leaves make Sorbus hypoglauca distinct from all other Sorbus and an interesting species for the collector. The broad inflorescences are reminiscent of those of S. rehderiana but in the latter the stipules are small and caducous. Sorbus hypoglauca fails to score high marks, however, as its autumn coloration is a dull brown and the fruiting corymbs soon break up (McAllister 2005a). It is very rare in cultivation, although grown at Ness, Tregrehan and elsewhere from collections made by Keith Rushforth in the Cangshan, Yunnan in 1993 and 1996 (KR 2733, 2738, 2746, 4047, 4061).