Magnolia salicifolia (Sieb. & Zucc.) Maxim.

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

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'Magnolia salicifolia' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/magnolia/magnolia-salicifolia/). Accessed 2019-12-06.

Genus

Synonyms

  • Buergeria salicifolia Sieb. & Zucc.

Glossary

apex
(pl. apices) Tip. apical At the apex.
fastigiate
(of a tree or shrub) Narrow in form with ascending branches held more or less parallel to the trunk.
glabrous
Lacking hairs smooth. glabrescent Becoming hairless.
glaucous
Grey-blue often from superficial layer of wax (bloom).
hybrid
Plant originating from the cross-fertilisation of genetically distinct individuals (e.g. two species or two subspecies).
lanceolate
Lance-shaped; broadest in middle tapering to point.
pollen
Small grains that contain the male reproductive cells. Produced in the anther.
pubescent
Covered in hairs.

References

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Credits

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

Recommended citation
'Magnolia salicifolia' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/magnolia/magnolia-salicifolia/). Accessed 2019-12-06.

A slender deciduous tree 20 to 40 ft high, with a trunk 1 ft in diameter; young shoots very slender, smooth the first year, slightly warted the second; leaf-buds quite glabrous. Leaves narrowly oval to lanceolate, tapered at both ends, blunt or pointed at the apex, 112 to 4 in. long, 58 to 112 in. wide, dull green and glabrous above, slightly glaucous and covered with minute down beneath; stalk slender, 14 to 58 in. long. Flowers 3 to 4 in. across. Petals six, pure white; the three outer ones 2 in. long, 12 in. wide, oblong, pointed; the three inner ones rather shorter and wider, slightly obovate. Sepals short, lanceolate, very soon falling; flower-stalks quite glabrous; flower-buds hairy. Fruits rosy-pink, 2 to 3 in. long; seeds scarlet. Bot. Mag., t. 8483.

Native of Japan (main island and Kyushu); introduced to Kew from the Yokohama nurseries in 1906 (for the Mt Hakkoda form, introduced earlier, see below).

A very distinct species which makes an elegant tree, perfectly hardy. It blossoms in April on the naked shoots and the display is rarely ruined by frost. The flower is similar to that of M. kobus, but otherwise the species is very distinct in its narrow leaves, smooth leaf-buds and flower-stalks. It first flowered at Kew in 1911. The bark when bruised emits a pleasant odour, like that of Aloysia triphylla (lemon-scented verbena).

M. salicifolia is variable in habit. The tree in the Azalea Garden at Kew, planted in 1906, was fastigiate at first but has now become open-crowned, with the main branches springing from the trunk at a narrow angle but arching downward at their extremities. It measures 40 × 234 ft (1967). Other trees imported to Britain from Japan at the same time had the branches spreading from the start. In a third form, named fasciata by Millais, the plant has no central leader but consists of a besom-like cluster of stems; this is much less attractive than the freely branching form.

There is also some variation in size and shape of leaf. Sargent, Director of the Arnold Arboretum, described the leaves of trees seen by him on Mt Hakkoda as up to 5 or 6 in. long and 2 in. wide (in the common and more typical form they are only 114 to 112 in. wide); he also noted that when bruised they exhaled ‘the delicate odour of aniseed’ (Forest Flora of Japan, p. 10). J. H. Veitch accompanied Sargent on his visit to Mt Hakkoda (autumn 1892) and both collected seeds there of M. salicifolia. Veitch’s share did not germinate but the next year he obtained seeds or seedlings from the Arnold Arboretum and was listing M. salicifolia in his 1902 catalogue. The Veitchian broad-leaved form, discussed by G. H. Johnstone (op. cit., pp. 98,100, 101), is almost certainly from the Mt Hakkoda seeds. One tree, growing in the Coombe Wood nursery, was described as follows in previous editions of the present work: it ‘differs from the typical form in its more spreading habit, its stouter branchlets, larger flowers, broader petals (112 ins.), broader leaves (up to 3 ins. wide), differently scented bark, and in flowering a fortnight or so later’. Dr Sprague of Kew recognised this as the var. concolor of Miquel.

From the Supplement (Vol. V)

specimens: Nymans, Sussex, 60 × 312 ft, 50 × 334 ft and 56 × 312 ft (1983); Winkworth Arboretum, Godalming, Surrey, 46 × 3 ft (1978); Talbot Manor, Norfolk, pl. 1963, 34 × 212 ft (1978); Bodnant, Gwyn., 52 × 212 ft (1981).

cv. ‘Kewensis’. – See M. (salicifolia × kobus) ‘Kewensis’, page 662. Dr Stephen Spongberg has pointed out that M. salicifolia is fertile to its own pollen, and varies slightly when raised from seed. He considers that ‘Kewensis’ lies within the span of variation of M. salicifolia and is thus a cultivar of it, not a hybrid. He makes the same judgment of M. × proctoriana, mentioned on page 662, holding this, too, to be a cultivar of M. salicifolia.

† M. biondii Pampan. M. aulacosperma Rehd. & Wils. – This is the Chinese counterpart of M. salicifolia, the chief botanical differences being: leaves green beneath; pedicels silky-pubescent; seeds deeply grooved on one side (only shallowly so in its Japanese ally). It was described from a specimen collected by the Italian missionary Silvestri in Hupeh and the type of the synonymous M. aulacosperma is a Wilson specimen from the same province. However, the species is now known to have a fairly wide range in central China, as far north as Shensi and Honan.

Wilson did not introduce M. biondii, at least not successfully, but it is now in cultivation in the USA.


M × proctoriana Rehd

A hybrid between M. salicifolia and M. stellata described by Rehder in 1939. As in ‘Kewensis’ the leaves are broadest at or slightly above the middle and the growth-buds silky-hairy. Petals six to twelve – hence less numerous than in M. stellata-, they are also broader.If M. stellata is treated as a variety of M. kobus, it would follow that M. × proctoriana is the collective name for all hybrids between M. kobus and M. salicifolia. The Kew hybrid described above would then come under it as M. × proctoriana ‘Kewensis’.

M (salicifolia × kobus) 'Kewensis'

This hybrid arose at Kew as a self-sown seedling found near the two parents. Bark of young stems smelling strongly of lemon-scented verbena (as in M. salicifolia); growth-buds with a few silky hairs. Leaves 3{1/2} to 5 in. long, 1{1/4} to 2 in. wide, narrowly obovate or elliptic, narrowed at the apex to a blunt tip, cuneate at the base, smooth and rather glossy above, slightly glaucous green beneath. Flowers very fragrant, with six petals about 3 in. long. A.M. 1952. It grows vigorously and plants of a good size can be seen in many magnolia collections. The original plant at Kew grows by King William’s Temple.The name M. × kewensis has never been validated by a Latin description.

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