Pterocarya rhoifolia

Pterocarya rhoifolia
Conservation status
	; Least Concern (IUCN 3.1)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fagales
Family:	Juglandaceae
Genus:	Pterocarya
Species:	P. rhoifolia
Binomial name
	Pterocarya rhoifolia; Siebold & Zucc.

Pterocarya rhoifolia (Japanese wingnut, Japanese: sawagurumi)[2] is a species of tree in the Juglandaceae family that is widely distributed throughout Japan, and also found native to China in the Laoshan District in eastern Shandong Province.[3][4] Its natural presence in China is contested.[1]

Fruiting tree

The tree flourishes in moist areas along riverbanks and mountain streams, and attains 30 m (98 ft) in height, flowering from May–July.[4]

It is a soft light wood, with the heartwood yellowish-white in color, which has been used as a substitute of kiri (Paulownia tomentosa), for example, to make geta clogs that are imitations of kiri-geta. It is straight-grained and the pore pattern on the surface provides the wood with a handsome appearance.[5]

References

Song, Y.; Kozlowski, G.; Bétrisey, S. (2019). "Pterocarya rhoifolia". IUCN Red List of Threatened Species. 2019: e.T66816434A158965576. doi:10.2305/IUCN.UK.2019-3.RLTS.T66816434A158965576.en. Retrieved 31 July 2023.
Nōrin Suisan Yōgo Kenkyūkai, ed. (1992). Waei eiwa nōrin suisan yōgo taiyaku jiten 和英英和農林水産用語対訳辞典 [J-E/E-J dict. of agriculture, forestry and fishery terminology translated side-by-side]. Gyōsei. p. 383. ISBN 9784324032046.
Rix, Martyn (August 2007). "594. PTEROCARYA MACROPTERA var. INSIGNIS: Juglandaceae". Curtis's Botanical Magazine. 24 (3): 180. doi:10.1111/j.1467-8748.2007.00583.x. JSTOR 45065824.
Flora of China (PDF). Harvard University. 1999. pp. 280–282. Retrieved 2010-05-15.
Bruce, Herbert Dale (1951). Properties and Uses of Commercially Important Japanese Woods. General Headquarters, Supreme Commander for the Allied Powers, Natural Resources Section. p. 51.

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[IUCN-1] Song, Y.; Kozlowski, G.; Bétrisey, S. (2019). "Pterocarya rhoifolia". IUCN Red List of Threatened Species. 2019: e.T66816434A158965576. doi:10.2305/IUCN.UK.2019-3.RLTS.T66816434A158965576.en. Retrieved 31 July 2023.

[norin-suisan-2] Nōrin Suisan Yōgo Kenkyūkai, ed. (1992). Waei eiwa nōrin suisan yōgo taiyaku jiten 和英英和農林水産用語対訳辞典 [J-E/E-J dict. of agriculture, forestry and fishery terminology translated side-by-side]. Gyōsei. p. 383. ISBN 9784324032046.

[rix-3] Rix, Martyn (August 2007). "594. PTEROCARYA MACROPTERA var. INSIGNIS: Juglandaceae". Curtis's Botanical Magazine. 24 (3): 180. doi:10.1111/j.1467-8748.2007.00583.x. JSTOR 45065824.

[harvard-flora-of-china-4] Flora of China (PDF). Harvard University. 1999. pp. 280–282. Retrieved 2010-05-15.

[bruce-5] Bruce, Herbert Dale (1951). Properties and Uses of Commercially Important Japanese Woods. General Headquarters, Supreme Commander for the Allied Powers, Natural Resources Section. p. 51.