Saturday, 23 September 2023

Rosa rugosa 玫瑰、濱茄子、濱梨、海棠花、刺玫

Common name: Japanese Rose
Scientific name: Rosa rugosa 玫瑰、濱茄子、濱梨、海棠花、刺玫
Genus: Rosa 薔薇屬
Family: Rosaceae 薔薇科, rose family

Remarks*: 

Origin: Neophyte (established after 1500 AD). A native of China, Japan and Korea. It was introduced into cultivation in 1802, but was not grown successfully until its reintroduction in 1845. It was first recorded in the wild in 1917. It is highly invasive in coastal districts.

Date: 16th July

266 An erect, densely prickly, bristly, suckering deciduous shrub, can reach up to 1.5m.

261

262 Leaves leaflets dark green, wrinkled above.

264

264-1 Pubescent leaflet underside.

263 Prickles.

265 Prickles.

260 Side view of the flower showing the sepals.

258 Flower 6-8cm across, bright pink (or white).

Rubus caesius 歐洲木莓、露莓

Common name: Dewberry
Scientific name: Rubus caesius 歐洲木莓、露莓
Genus: Genus: Rubus 懸鉤子屬*
Family: Rosaceae 薔薇科, rose family

Remarks*: 

Origin: native 

Date: 21st June (flowering) & 9th Aug (fruits)

118

119 Leaves with 3 overlapping leaflets.

122 Underside of the leaf.

120 The inflorescence and the flower buds.

123 The flower buds.

121 Side view of the flower showing the sepals.

210116

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The following photos were taken on 9th Aug on another location.


90040 A deciduous shrub. Stems prostrate, rooting at tip.

043 Stem glabrousprickles weak.

039

037 Fruits large; black few drupelets, with bluish bloom.

Friday, 22 September 2023

Spiraea japonica 粉花繡線菊

Common name: Japanese Spiraea
Scientific name: Spiraea japonica 粉花繡線菊, 日本繡線菊
Genus: Spiraea 繡線菊屬
Family: Rosaceae 薔薇科, rose family

Remarks*: 

Origin: Neophyte (established after 1500 AD). A native of China, Korea and Japan. It is introduced in 1853 and was recorded from the wild by 1909.

Date: 22th June

120

110 Glabrous stem.

119 Leaves of different size and postion.

118 Margin serrated

113

113-1 bud at leaf axil?

112 Flowering twig.

111 Underside of the leaf.

117

117-1 Earlier stage of flower buds.

117-2 Bracteoles of flower buds.

109 Later stage of flower buds.

109-1

109-2 Two bracteoles of different length per each flower buds.

103

103-1 Flower buds. The inner surface of the tip of the sepals are hairy.

115

115-1 Side view of the flowers showing the sepals.
 
107

107-1 Flowers not yet fully open, the inner whorl of stamens start unfolding.

105

105-1 5 styles with ovaries deep inside the flower; a lot of stamens.

105-2

Fagus sylvatica 歐洲山毛櫸、歐洲水青岡

Common name: Beech
Scientific name: Fagus sylvatica 歐洲山毛櫸、歐洲水青岡
Genus: Fagus 水清岡屬、山毛櫸屬
Family: Fagaceae 殼斗科, oak and beech family

Remarks:

Origin: native

Date: 21st June

633 Upper surface of the leaf.

634 Lower surface of the leaf. It is highly infested with parasites.

636 A large, long-lived deciduous tree, up to 40m.

635

632 Fruit 12-18mm, glossy brown, enclosed in 'cupule' covered by stiff naroow scales.

Hypericum tetrapterum 四翼金絲桃

Common name: Square-stalked St John's-wort
Scientific name: Hypericum tetrapterum 四翼金絲桃
Genus: Hypericum 金絲桃屬
Family: Hypericaceae 金絲桃科, St. John's wort family

Remarks: 

Origin: native

Date: 9th Aug

283 An erect stoloniferous glabrous perennial, can reach up to 70cm.

293

294 Stem.

294-1 Enlarged photo above showing stem square in section, angles winged.

296 Lower stem, also square in section, angles winged. Upper surface of the leaves.

297-1 Upper surface of leaves showing the small translucent glands.

299 Lower surface of the leaves.

295 Leaves half-clasping stem

295-1 Black dots along the leaf margin.

301 Flower bud.

291 The inflorescence.

290-1 Side view of the flower showing sepals about 2/3 length of petals.

288 Flower pale yellow, about 1cm across.

292 Fruits.