Showing posts with label Prunus 李屬. Show all posts
Showing posts with label Prunus 李屬. Show all posts

Monday, 27 May 2024

Prunus cerasifera 櫻桃李

Common name: Cherry Plum, Myrobalan
Scientific name: Prunus cerasifera 櫻桃李
Genus:  Prunus 李屬
Family: Rosaceae 薔薇科, rose family

Origin:  Neophyte (established after 1500 AD). It is a native of south-eastern Europe (Balkan Penninsula), south-western and central Asia. It was known in cultivation by 1597 and was not recorded until the 20th century.

Date:  4th March (flowering) & 24th April (fruiting)

010 Sometimes thorny, deciduous shrub or small tree, can grow up to 8m.

015 Flowers appearing with leaves (vs flowers appear before leaves in Prunus spinosa 黑刺李, 刺李, blackthorn).

007 Young twig with flower buds.

009


009_1 Note the green (or reddish), shiny and glabrous 1st year twig (vs brown, more or less hairy new growth twig of  Prunus spinosa 黑刺李, 刺李, blackthorn) and the persistent bud scales (B Se) at base of the flower buds. Sepals (Sl).


011 Flower usually solitary.

006 Side view showing the brown bud scale at the base of the flower, the reflexed  green sepals and the white petals.

005 5 sepals.

005_1 Reflexed blunt, tongue-shaped, serrated sepals. (vs patent, triangular, entire or sparsely toothed sepals in Prunus spinosa 黑刺李, 刺李, blackthorn)

008_1 5 petals, numerous stamens and 1 pistil.

002_1 A fresh flower. Petals 7-11mm.

013_1 Petals had dropped, leaving the green reflexed sepals, numerous stamens and the pistil at the center.

-------------------------------------------------------------------------------------------

The following photos were taken on 24th April of the same plant:

034 The tree trunk.

033 More leaves and fruits are forming now.

032 The arrangement of the leaves on the twig.

028

028_1 

025_1

024


027_1 Leaf 3-7cm, glabrous, rather glossy above.

030_1 Underside of the leaf.

021

021_1 Fruit 2-2.5cm, (yellow or reddish when ripe) smooth.


023_1

Friday, 3 May 2024

Prunus padus 稠李、臭耳子、臭李子

Common name: Bird Cherry
Scientific name: Prunus padus 稠李*、臭耳子、臭李子
Genus:  Prunus 李屬
Family: Rosaceae 薔薇科, rose family
Origin: native

Remarks: '稠' is pronounced as '酬' in Cantonese

Date:  24th April

322 Deciduous, suckering (根出條) tree, can grow up to 19m.

201 Side branch.

200 Upper trunk.

198 Bark brown, peeling(?), strong smelling.

187 Leaves 5-10cm, glabrous.

193 Leaf axil. Leaves alternate.

186 Leaf obovate to elliptic, margin with fine sharp teeth, tip abruptly pointed.

192 Cordate leaf base.

192_1 Note the pair of glands at the end of the petiole.

194 Underside of the leaf, note the tufts of hairs in axils of main veins. (vs with rows of hairs along lower side midrib when mature in Prunus serotina 晚花稠李, rum cherry)

194_1 Tufts of hairs in axils of main veins.

196 Flowers in long (many-flowered elongated), more or less erect or drooping racemes. (vs inflorescence more closely packed in Prunus serotina 晚花稠李, rum cherry)

152 Pedicels 8-15mm. (vs pedicles 3-7mm in Prunus serotina 晚花稠李, rum cherry)

184 A raceme.

180

180_1 Flower bud, note the margins of the sepals.

182 Underside of the flower.

174_2 5 petals, many stamens and 1 carpel with 1 stigma. Petals 5-9mm. (vs petals 3-4.5mm in Prunus serotina 晚花稠李, rum cherry)

174_1

Tuesday, 29 March 2022

Prunus laurocerasus 桂櫻

Common name: Cherry Laurel
Scientific name: Prunus laurocerasus 桂櫻
Genus:  Prunus 李屬
Family: Rosaceae薔薇科, rose family

Origin: Neophyte (established after 1500 AD). It is native of the Balkan peninsula 巴爾幹半島. It was being cultivated in Britain by 1629 and was known from the wild by 1886. It is now commonly planted for amenity.

Date:  25th March

A evergreen shrub or small tree to 10m.



Leaves evergreen, glossy and leathery. (vs leaves deciduous in P. serotina, 野黑櫻, 晚花稠李 Rum Cherry or Black Cherry (Neophyte)).

Leaves evergreen, oblong, abruptly pointed at the tips and broadest below halfway. (vs. Leaves evergreen, oval to elongated-oval, pointed tip and broadest above the middle in P. lusitanica, 葡萄牙桂櫻, 萄萄牙月桂樹, 盧李梅 Portugal Laurel (Neophyte)) 

leaf leathery, with distant tiny teeth

(vs there are dense orange or white hairs bristling from the prominent lower midrib in P. serotina, 野黑櫻, 晚花稠李 Rum Cherry or Black Cherry)

Photos above and below: erect raceme of flower buds of different stages.


flowers in many-flowered, elongated and erect racemes


5 sepals, 5 petals