All Floras      Advanced Search
FOC Vol. 14 Page 227 Login | eFloras Home | Help
FOC | Family List | FOC Vol. 14 | Helwingiaceae | Helwingia

1. Helwingia japonica (Thunberg) F. Dietrich, Nachtr. Vollst. Lex. Gärtn. 3: 660. 1817.

青荚叶 qing jia ye

Helwingia japonica

Credit: Harvard University Herbaria

Shrubs 1–2 m tall, deciduous; bark dark brown or grayish black, smooth; young branches green, glabrous, smooth, with conspicuous leaf scars. Leaf petiole 1–5(–6) cm; stipules threadlike, divided apically or rarely undivided; leaf blade abaxially light green, grayish white, or glaucous green, ovate, obovate-elliptic, ovate-rounded, rarely elliptic or ovate lanceolate, 3.5–9(–18) × 2–6(–8.5) cm, papery, glabrous, veins 5–7(or 8), conspicuous, raised abaxially, slightly impressed adaxially, base broadly cuneate or ± rounded, margin spiculate serrate to spiculate crenate, apex acuminate, rarely caudate-acuminate. Umbels between middle and lower 1/3 of midvein, rarely on upper part of young branches; staminate umbels 3–12(–18)-flowered; carpellate umbels 1–3-flowered. Flowers pedicellate. Petals light green, 1–5 mm. Carpellate flowers: style 3–5-divided. Fruit subglobose or ellipsoid, ca. 4–8 mm in diam., nearly sessile. Seeds 3–5, lobes 3–5. Fl. Apr–May, fr. Aug–Oct.

Forests, woods, thickets, valleys, slopes, streamsides, roadsides; 100–3400 m. Anhui, Fujian, SE Gansu, Guangdong, Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangsu, Jiangxi, S Shaanxi, Shandong, Shanxi, Sichuan, Taiwan, Yunnan, Zhejiang [Bhutan, Japan, S Korea, N Myanmar].

Helwingia rusciflora Hemsley (J. Linn. Soc., Bot. 23: 341. 1888, not Willdenow, 1806) is based on a mixed collection, of which part is H. japonica var. japonica and part is var. hypoleuca.

1 Leaves oblong, narrowly elliptic, or ovate elliptic, rarely lanceolate.   1d var. zhejiangensis
+ Leaves ovate, ovate-rounded, or broadly elliptic.   (2)
2 (1) Veins of abaxial surface of leaves papillate.   1c var. papillosa
+ Veins of abaxial surface of leaves not papillate.   (3)
3 (2) Abaxial surface of leaves with powder, grayish white or glaucous green.   1b var. hypoleuca
+ Abaxial surface of leaves light green.   1a var. japonica

Lower Taxa


Related Objects  
  • Image/JPEG (Harvard University Herbaria)
  • Image/JPEG

    Photos by The Biodiversity of the Hengduan Mountains Project  
  • Image/JPEG (David E. Boufford)
  • Image/JPEG
  • Image/JPEG (David Boufford)
  • Image/JPEG
  • Image/JPEG (David Boufford)
  • Image/JPEG

    Flora of China @
    Browse by
    Advanced Search

    Flora of China Home




     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |