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This entry is compiled and applied by "popular science China" Science Encyclopedia

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Hongguoshu (scientific name: < istranvaesia davidiana < / I) Dcne.), alias: strelwood (economic plant manual), is a Rosaceae red fruit tree plant, evergreen shrubs or small trees, up to 1-10 meters high, with dense branches; branchlets are thick, cylindrical, densely villous when young, gradually falling off, when the branches are purple brown, old branches are gray brown, with sparse and invisible lenticels; winter buds are long ovate, apex short acuminate, reddish brown, nearly hairless Or pubescent at the margin of scales.

morphological character

Shrubs or small trees, up to 1-10 meters high, with dense branches; branchlets are thick, cylindrical, densely villous when young, gradually falling off, and the branches are purple brown in the current year, gray brown in the old branches, with sparse and indistinct lenticels; winter buds are long ovate, apex short acuminate, reddish brown, nearly glabrous or pubescent at the edge of scales. Leaf blade oblong, oblong lanceolate or oblanceolate, 5-12 cm long, 2-4.5 cm wide, apex acute or protruding, base cuneate to broadly cuneate, entire, upper midrib depressed, grayish brown pilose along midvein, lower midvein protruding, lateral veins 8-16 pairs, inconspicuous, sparsely pilose along midvein; petiole 1.2-2 cm long, pilose, falling off gradually; stipules membranous, subulate, 5-Long -6 mm, early drop. Compound corymb, 5-9 cm in diameter, densely flowered; total pedicel and pedicel pilose, pedicel short, 2-4 mm long; bracts and bracteoles membranous, ovate lanceolate, caducous; flowers 5-10 mm in diameter; calyx tube with sparse pilose outside; sepals triangular ovate, apex acute, entire, 2-3 mm long, less than half of calyx tube, with few pilose outside; petals suborbicular, diam Ca. 4 mm, base shortly clawed, white; stamens 20, anthers purplish red; style 5, mostly commissural, stigma capitate, slightly shorter than stamens; ovary apically tomentose. Fruit subglobose, orange red, 7-8 mm in diam. Sepals persistent, erect; seeds oblong. The flowering period is from May to June and the fruiting period is from September to October.

Growth environment

It grows on hillsides, mountain tops, roadsides and shrubs at an altitude of 1000-3000 meters.

Distribution range

It is distributed in Yunnan, Guangxi, Guizhou, Sichuan, Jiangxi, Shaanxi and Gansu. It is also distributed in northern Vietnam.

Main value

The trees are beautiful, with snow-white flowers in spring and red fruits in autumn. It is a good tree species for foliage and fruit observation. It can be planted in clumps, slopes, hedges in gardens, roadsides and rockeries. It can also be potted. It is a good material for making bonsai and suitable for garden or slope planting.

Methods of reproduction

Generally, the seeds are sown immediately after harvest, or stored in sand until the next year; due to the lack of fibrous roots, the transplanting inch should pay attention to transplanting with soil, and cut off some branches.

cultivation techniques

1. The planting site should be far away from the seepage pit, sunny or slightly shaded place. The planting hole is mixed with an appropriate amount of rotten branches and leaves or rice husk to ensure smooth drainage. If the seedlings have few fibrous roots, some branches should be cut off and transplanted with soil. Planting time can be in winter, spring or rainy season.

2. Light and temperature red fruit trees like light and should be planted or placed in a sunny place. Like warm, cool, potted plants in winter to people room protection, antifreeze.

3. Watering and fertilizing in order to accelerate the formation of young trees, the management of fertilizer and water should be strengthened. During the growing period, the fertilizer and water should be applied once or twice a month, and attention should be paid to watering, especially in summer, to ensure the water supply and keep the basin soil moist or dry. In winter, the basal fertilizer should be applied and the watering should be controlled properly to prevent the basin soil from drying for a long time. The management of field plant is extensive, and it can grow normally in the natural environment of Zhengzhou area.

4. Pruning red fruit trees has strong sprouting power, and it is easy to form cluster branches if it is short cut. For arbor like cultivation, seedlings (saplings) with a certain height of trunk should be selected for cultivation. The measures can be seen in Photinia.

Related varieties

Red willow fruit tree

The leaves of this variety are narrow lanceolate, similar to willow leaves, 6-11 cm long and 1.6-2.8 cm wide; the fruit is bright red, about 8 mm in diameter.

It is distributed in Sichuan, Yunnan and Taiwan.

B. Hayata of Zaotian Wencang listed the red fruit tree from Taiwan of China in Photinia genus, and then changed it into this genus and designated it as a new species, named as < is. Niitakayamensis < / I (Hayata) Hayata.

Poyehongguoshu

This variety differs from the former in that its leaves are small, elliptic oblong to oblong lanceolate, margin undulate, 3-8 cm long and 1.5-2.5 cm wide; inflorescence nearly glabrous; fruit orange red, 6-7 cm in diameter.

It is distributed in Shaanxi, Hubei, Hunan, Jiangxi, Zhejiang, Guangxi, Sichuan, Guizhou and Yunnan. It grows on the hillside, shrub, valley and gully with an altitude of 900-3000 meters.

Red fruit tree with calyx

Stranvaesia amphidoxa c.k.schneid is a red fruit of the genus stranvaesia Lindl. Evergreen shrubs, up to 2-4m in height. Leaf blade elliptic, oblong or oblong 4-10cm, 2-4cm wide, apex acuminate, face dark green, below brown yellow, stipules fall early. Corymbs, pedicels and pedicels are densely covered. Petals white, suborbicular; fruit ovate. It has ornamental value.

Red fruit tree

Inflorescence of this variety is subumbelliform, pedicel, calyx and fruit are glabrous.

It grows in Fanjing Mountain, Songtao, Xingren, Xingyi and Anlong, and grows in dense forest at an altitude of 1300-1700 meters. It is distributed in Hunan, Guangxi and other provinces.

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