(Upload on December 30 2012) [ 日本語 | English ]

Polemonium acutiflorum Willd. ex Roem. et Schult.

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

⇒ Engler's syllabus (エングラー体系)

Polemoniaceae Juss. (ハナシノブ)

ca 200-400 spp in 18-25 genera in the world
two-four spp in one genus in Japan) (+ 1 exotic genus)
Phlox L. (クサキョウチクトウ)
Polemonium L. (ハナシノブ)
Ca 30 species
Native to boreal to arctic regions of the Northern Hemisphere
All are perennials

Polemonium acutiflorum in interior Alaska

Kyokuchihanashinobu (キョクチハナシノブ, 極地花忍) tall Jacob's-ladder
Lifeform: short-lived perennial forb
Distribution: boreal regions in the Northern Hemisphere
Habitat: meadows, stream banks, river banks, roadsides, etc.
Morphology: very common and highly variable
Flower: corolla broadly campanulate (bell-shaped)
Stem: erect, usually solitary, decumbent at the base
Soil and root: shallow roots with soil pH 5-8

Polemonium caeruleum L. ssp. villosum (J. H. Rudolph ex Georgi) Brand
Polemonium caeruleum L. ssp. campanulatum Th. Fr.
Polemonium campanulatum (Th. Fr.) H. Lindb.

Varieties (Ohwi established two varieties in Japan)

[1-3] at a garden of Yoshikawa, Fairbanks, on August 10 2012. I wanted to see the flowers!