Erigeron sumatrensis 蘇門白酒草、野茼蒿

 Common name: Guernsey Fleabane

Scientific name: Erigeron sumatrensis 蘇門白酒草、野茼蒿 *

Genus: Erigeron 飛蓬屬
Family: Asteraceae or Compositae 菊科, aster , daisy, composite or sunflower family

Remarks*: It was formerly named Conza sumatrensis 蘇門白酒草, belonged to Conza 假蓬屬、白酒草屬. It is also recorded in Hong Kong as an exotic plant. '茼蒿' is pronounced as '朣 hou1' in Cantonese.

Origin: Neophyte (established after 1500 AD). I It is a native of South America. It was first recorded in 1961 and was found naturalized in 1974.

Date: 4th Aug

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[001] A possible pollinator -- a hoverfly belonged to Sphaerophoria 細腹食蚜蠅屬 spp, possibly a female Sphaerophoria scripta 短翅細腹食蚜蠅.

Epilobium brunnescens

Common name: New Zealand Willowherb

Scientific name: Epilobium brunnescens 
Genus: Epilobium 柳葉菜屬
Family: Onagraceae 柳葉菜科, willowherb or evening primrose family

Origin: Neophyte (established after 1500 AD). It is a native of New Zealand. It was first recorded as a garden weed in 1904 in Edinburgh.

Remarks: 

Date: 23rd July

[078] Flowering plants in the rock crevices.

[051] Prostrate, creeping along a wet vertical boulder. Matted 纏結成塊的, creeping herb forming patches up to 2 m across. More or less glabrous perennial, can grow up to 20 cm, rooting at nodes.  

[2050] A lot of very long flower stalks.

[053] Many short flower stalks could be seen in this plant.

[043_1] Leaves 3-7mm, orbicular, more or less entire, smooth above. (Lamina of leaf narrowly ovate to broadly ovate or broadly elliptic, 0.15–1.3 × 0.15–1.2 cm.)

[042_1] Stems with well-marked lines of strigillose hairs running down from margins of petioles, very rarely glabrous. Note where the flower stalk arises.

[042_2] Photo cropped above, showing the strigillose hairs 微硬伏毛 along the stem.

[046_1] Plant with a flower stalk (with a flower bud) just protruded.

[045] Flowers solitary, erect, attached by long, slender flower stalks.

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[039_1] Photo cropped above. Note where the flower stalk arises from the leaf axil.

[049_1] The flower bud.

[037_1]  Floral tube 0.6–1.6 mm deep, glabrate 隨年齡增長而變為無毛的 or hairy. Sepals are narrow.

[036_1] Flower still not open in the morning.

[2075_1]  It bloom finally in another locatation in the afternoon. Petals white, (2.3)–3.2–7 × 1.8–5 mm, notched, crossed by a few greyish veins. 

[2076_1] Flower 3-4 mm across. (Flowers are around 8 mm across.)

[2076_2]  The eight stamens (1-4: four shorter stamens of inner whorl; 5-8: four longer stamens of outer whorl) have short white filaments and pale yellow anthers. The stigma is club-shaped, above a pinkish style. Sepals are narrow, their tips just visible from above in the gaps between the petals.

Capsule glabrate or sparsely hairy along lines of dehiscence, 1.5–6.1 cm long; fruiting pedicel (1)–3.5–8–(12) cm long (not seen at this moment).

Empetrum nigrum ssp nigrum 岩高蘭

Common name: Crowberry
Scientific name: Empetrum nigrum ssp nigrum 岩高蘭
Genus:  Empetrum 岩高蘭屬
Family: Ericaceae 杜鵑花科, heath or heather family

Origin:  native

Date:  22nd May 7th June

[358] Low evergreen, heather-like shrub, can grow up to 45cm. Stems prostrate, rooting (could not be seen above) vs stems more or less erect, not rooting in Empetrum nigrum ssp hermaphroditum.

[362] Reddish brown stem.

[356]

[356_1]

[356_2] Leaves alternate, entire, with revolute margins. Short petiole. Leaves 3-4 times as long as broad vs leaves 2-3 times as long as broad in Empetrum nigrum ssp hermaphroditum.

[018_2]  ( took on 7th June)

[360] Leaves with revolute margins.

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[357_2] Male flowers as anthers could be seen.

[368] Female flower.

[018_1] ( took on 7th June)

[019]  ( took on 7th June) Black berry-like drupe.

[020]  ( took on 7th June)

[364] Side view of the berry showing the remaining sepals.