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(Upload on June 24 2015) [ 日本語 | English ]

Forsythia viridissima Lindl.






Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

Forsythia Vahl (レンギョウ)


Dioecious plant
F. japonica Makino (ヤマトレンギョウ), endemic to Chugoku District
F. mandschurica Uyeki (マンシュウレンギョウ)
F. ovata Nakai (ヒロハレンギョウ)
F. togashii H. Hara (ショウドシマレンギョウ), merged with F. japonica
F. velutina Nakai (チョウジュレンギョウ), introduced
TaxonCorollaTepalFlowerLeaf at
flowering
LeafBranchPith
F. suspensa (Thunb.) Vahl
(レンギョウ), weeping forsythia
simple
yellow
2 cm l ×
1 cm w
emergent pistil
none
F. viridissima Lindl.
(シナレンギョウ)
yellow > 2 cm l ×
0.5 cm w
emergent pistil
style > stamen
present tooth at middle
and top
erect dense ladder,
long node

var. koreana Rehder
(チョウセンレンギョウ)

dark
yellow
2 cm l ×
1 cm w
emergent stamen
style < stamen
none teeth at all
margin
slant sparse ladder,
short node

Forsythia viridissima in Japan


Shinarengyou (シナレンギョウ, 支那連翹), greenstem forsythia
Lifeform: deciduous shrub
Origin: native to China (introduced to Japan)
Use: gardening and park trees

ST1 ST2 ST3
[1-3] at a bank along Sophia Street, Chiyoda Ward, Tokyo, on November 14 2014.

索引

var. koreana Rehder (チョウセンレンギョウ)
Origin: Korea
ST1 ST2
[1/2] at Yachidamo Park (Yachidamo = Fraxinus mandshurica), N28E4, East Ward, Sapporo, on May 6 2015.

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