(First upload on May 11 2009. Last on November 9 2016) [ 日本語 | English ]

Crocus spp.

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

Crocus L. (サフラン, crocus in English) common in Japan
About 80 species in the world
All species in Japan are introduced for gardening
Life form: perennial herb
Habitat (in native regions): woodlands, scurbs, and meadows from seashore to alpine
Cultivars: many

Field training on integrated environmental research (統合環境調査法実習) (fauna and flora 種リスト)

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

C. chrysanthus Herb. (カンザキクロッカス)
C. flavus West (キバナサフラン, yellow crocus / Dutch yellow crocus)
C. sativus L. (サフラン/薬用サフラン, saffron, or saffron crocus): the Mediterranean
C. sieberi (L.) J. Gay (Sieber's crocus)
C. speciosus M. Bieb. (アキザキクロッカス *)
C. vernus Hill (ハナサフラン)

Crocus chrysanthus cv. in Sapporo

Kanzakikurokkasu (カンザキクロッカス, 寒咲くろっかす), golden crocus
Distribution: native to Balkans and Turkey
Cultivars: blue bird

[1] on litter, probably escaped from a gardening, N21/W2, West Ward, Sapporo, on April 6 2011. [2] along a street at North Ward, Sapporo, on April 20 2013. [3] in front of GSEES Building on April 12 2014. Discarded: in front of GSEES Building on April 6 2011)

Crocus speciosus cv. in Hokkaido University Campus

Akizakikurokkasu (アキザキクロッカス*), Bieberstein's crocus, fall-blooming crocus (* tentative translation)
Distribution: native to Turkey, the Caucasus and Iran
Habitat: woods and open hillsides
ssp. ilgazensis B.Mathew: Turkey
ssp. speciosus: Turkey, Iran, Caucasus, Crimea
ssp. xantholaimos B.Mathew: Sinop Province in Turkey
Cultivars: albus

[1] on a lawn under a transplantation tree near Coop Central Restaurant on October 18 2013. [2/3] under transplanted Cercidiphyllum japonicum trees near the Faculty of Education, Hokkaido University, on October 17 2016. Discarded: in front of GSEES Building on October 12 2012.

Crocus vernus cv. in Hokkaido University Campus

Hanasafuran (or Kurokkasu) (ハナサフラン/クロッカス), spring crocus / giant Dutch crocus
Distribution: native to eastern Europe

[1] it is not a garden. Just grows with lawn grasses. [2] In front of GSEES Building on May 2 2013. The flowering delayed in this year due probably to heavy snow. [3] In front of GSEES Building on April 6 2009, obviously different cultvar from [1/2]

• Diversity of flowers

[4-6] arranged from dark to light colors at the backyard of GSEES Building on May 8 2013.