(First upload on April 7 2013. Last on November 10 2021) [ 日本語 | English ]

Solanum nigrum L.

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

Solanum L. (ナス)
Inu-hozuki (イヌホオズキ, 犬酸漿), black nightshade (USDA)
Bakanasu (バカナス, 馬鹿茄子)
Lifeform: weedy, annual forb < 60 cm high (20-90 cm)
Distribution: widespread in temperate and tropical regions (archaeophyte to Japan)

HUSTEP: Plants and Plant communities in Japan (flora list)

Flowering: mostly in August-October
Petiole: developing wing
Fruit: green → black (6-7 mm in diameter) ⇒ seed dispersal = animal
Poison: solanine (ソラニン) throughout the body, fruit containing fatty oil, etc.

- var. miniatum (Bernh. ex Willd.) Fr.
- var. villosum L.
Solanum villosum Mill.

Cf. Solanum luteum Mill. (アカミノイヌホオズキ)

Solanum nigrum in Japan

Solanum1 Solanum2 Solanum3
Solanum4 Solanum5 Solanum6
Solanum7 Solanum8 Solanum9
[1/2] on the slope of Mount Yatsu, Shizuoka Prefecture, on March 5 2013. [3] along a paved road near the Gokokuji Temple Entrance of highway, Tokyo, on March 15 2017. [4/5] near Hakone Climbing Cable Car Koen-shimo Station, Hakone, on August 21 2021. [6] along a paved road near JR Nagasaki Station, northwestern Kyushu, on April 16 2017. [7-9] between Okachimachi and Ichigaya, Tokyo, on January 8 2019.