Sorbus rinzenii
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Credits
Article from New Trees by John Grimshaw & Ross Bayton
Recommended citation
'Sorbus rinzenii' 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 hypoglauca
- 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 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 1.5–2.5 mm on extension shoots, to 4 mm on fruiting spurs. Leaves 9–19 3–5 cm, with (9–)11–14 pairs of leaflets. Leaflets to 3 0.7 cm, oblong, apex rounded, margins serrate with acuminate teeth in upper two-thirds, white-pilose. Stipules foliaceous, oblong, serrate on outer margin, 11 3.5 mm on flowering shoots, persisting. Flowers white. Fruit globose, 8.5–12 7–9 mm, ripening white or pink, fading to white; carpels four to five. Sexual diploid. Rushforth 1991. Distribution BHUTAN; INDIA: northern Sikkim; NEPAL: eastern. Habitat Mountain forests, c.4000 m asl. USDA Hardiness Zone 6. Conservation status Not evaluated.
Sorbus rinzenii is a small tree in the S. microphylla alliance. It shares many characteristics with S. rufopilosa, including being a sexual diploid, but is larger in all parts, with large persistent stipules and leaflets up to 3 cm long that are toothed to more than half their length (McAllister 2005a). It comes from the drier area of northwestern Bhutan, where it was collected by Keith Rushforth in 1985, and also occurs in northern Sikkim and eastern Nepal at c.4000 m, from where it was introduced by the Kew-Edinburgh-Kanchenjunga Expedition in 1989 (KEKE 627). It tolerates drier conditions than S. rufopilosa, and is more widely grown.