• HOME
  1. 日本語
  2. English
• Personal Info.
  1. CV
  2. For candidates
  3. Give me job!
  4. Recent(?) Photos
  5. Master/doctor theses
• Education
  1. Catalog
  2. HUSTEP
  3. Ecology
  4. Natural env. studies
  5. Environ. conserv.
  6. Field trip for Env. Res.
     
  7. Eco-campus(plants)
  8. Symbiosis in nature
  9. Beadroll
  10. Glossary(References)
• Research
  1. Abstract
  2. Volcanic succession
  3. Wildfire ecology
     
  4. Wetland conservation
  5. Skislope vegetation
  6. Mining
  7. Pub: English
  8. Pub: Japanese
• Hobby · Link
  1. Yoshida
  2. Plant taxonomy
  3. Plants
  4. Cup of tea
  5. Western Australia
  6. Link
  7. Contact

(First upload on January 31 2012. Last on November 28 2016) [ 日本語 | English ]

Polygonum L. (タデ) P. aviculare L. Lifeform: annual forb ssp. aviculare (ミチヤナギ) Michiyanagi (ミチヤナギ, 道柳), common knotgrass Distribution: temperate regions in the Northen Hemisphere, including Japan Habitat: grasslands, and disturbed sites, such as roadsides ⇒ P. arenastrum (ハイミチヤナギ) Synonyms: Polygonum heterophyllum Lindm. Polygonum aviculare L. var. vegetum Ledeb.

ssp. neglectum (Besser) Arcang. (オクミチヤナギ, 奥道柳) Distribution: Europe - North America, exotic to Japan Habitat: roadsides, crop fields, and coastsides Chromosome number: 2n = 40, or 60 Synonyms: Polygonum aequale Lindm. var. platycarpum K. Ito Polygonum arenastrum Boreau var. platycarpum (Koji Ito) K. Ito ex Kitag. Polygonum neglectum Besser

Polygonum aviculare in the Northern Hemisphere

---

Hokkaido

ssp. aviculare (ミチヤナギ)

1 2 3
4 5 6
[1/2] along the Philosopher's Path of Hokkaido University on November 12 2011. [3] near the South Gate of Hokkaido University, Sapporo, on September 1 2014. [4-6] on a roadside, N28/E2, East Ward, Sapporo, on July 4 2015. Records: at a parking lot near Moiwa skislope (藻岩山スキー場) on June 22 2021.

ssp. neglectum (オクミチヤナギ)

1 2
[1/2] in front of Japanese black-noodle restaurant, Kiritachitei (霧立亭) in Horokanai Town, northern Hokkaido, on June 29 2018.

---

Alaska

Includes several variations sometimes regarded as species (P. heterophyllum Lindm.; P. neglectum Bess., P. buxiforma Small) (Hultén 1968)

1 2
[1/2] in front of a hotel at Fairbanks, AK, on August 5 2013.