Acer miyabei

taxobox
name = "Acer miyabei"

---

status = EN
regnum = Plantae
unranked_divisio = Angiosperms
unranked_classis = Eudicots
unranked_ordo = Rosids
ordo = Sapindales
familia = Sapindaceae
genus = "Acer"
species = "A. miyabei"
binomial = "Acer miyabei"
binomial_authority = Maxim.|

"Acer miyabei" (Miyabe's or Miyabe Maple; Japanese: クロビイタヤ： "kurobiitaya") is a species of maple native to Japan, where it occurs in Hokkaidō and the Tōhoku region in northern Honshū.Rushforth, K. (1999). "Trees of Britain and Europe". Collins ISBN 0-00-220013-9.]

It is a small to medium-sized deciduous tree growing to 10–20 m tall, with a trunk 30–40 cm diameter with rough, grey-brown bark. The leaves are five-lobed (the basal pair of lobes usually small), 7–20 cm long and 12–20 cm broad, with a 5–15 cm long petiole; the petiole bleeds white latex if cut. The flowers are produced in spring at the same time as the leaves open, yellow-green, in erect corymbs. The fruit is a samara with two winged seeds aligned at 180º, each seed 8 mm wide, flat, with a 2 cm wing.Les Erables: [http://jeanlouis.helardot.free.fr/page_erables/acer_miyabei.htm "Acer miyabei"] (in French)]

It is an endangered species, confined to scattered locations close to streams and rivers. [http://www.biodic.go.jp/english/rdb/red_plants.csv Red List of Threatened Plants of Japan] ]

There are two varieties:Search for kurobiitaya [http://ftbc.job.affrc.go.jp/html/topics/iden/kuroitaya.htm (in Japanese)] ; google [http://translate.google.com/translate?hl=en&sl=ja&u=http://ftbc.job.affrc.go.jp/html/topics/iden/kuroitaya.htm translation] ]
*"Acer miyabei" var. "miyabei". Samaras downy.
*"Acer miyabei" var. "shibatai" (Nakai) Hara. Samaras hairless.

It is closely related to "Acer miaotaiense" from China (some authors treat this as a subspecies of "A. miyabei", as "Acer miyabei" subsp. "miaotaiense" (P.C.Tsoong) E.Murray), and to "Acer campestre" from Europe.Flora of China (draft): [http://flora.huh.harvard.edu/china/mss/volume11/Aceraceae-AGH_finishing.htm "Acer"] ]

References