Canada: Colombie Britannique, Alberta, Territoire Yukon.

Chine: Mandchourie.

Japon,

Russie: Archipel des Kouriles, Peninsule du Kamtchatka, Fleuve Amour, République de Sakha, Région de Primorye, E. Sibérie, , Sakhaline, Région de Magadan.

USA: Alaska, Iles Aloutiennes.

G. eriostemon var. orientale Maxim.
G. erianthum f. leucanthum Takeda
G. erianthum f. albiflora Kom.
G. erianthum f. alpestris Kom.
G. erianthum f. communis Kom.
G. erianthum var. angustifolium Miyabe &Tatew.

Bibliographie personnelle :

G/F0008: B.K. Shishkin & E.G Bobrov - Flora of USSR - vol.14,Bobrov, E.G.. , Moscou-Leningrad. 1949,3-49.

G/F0013. Wild flowers of Japon II,Satake Y.& Al., 1982,219.

G/F0001-Flora of Japan- Ohwi Jisaburo- Smithsonian Institution, Washington D.C., 1965, 578-579

G/A0057. Clifton Richard Geranium erianthum,. Geraniaceae group news 70, . summer 1998

G/F0049: Aedo, C. (2001). The genus Geranium L. (Geraniaceae) in North America. II. Perennial species. Anales Jard. Bot. Madrid 59(1): 3-65.

Description horticole :

D. Evrard 1997: Fleurs: 4cm avec un axe horizontal court, dans les tons bleus particulièrement lumineux à mi-ombre, plus ou moins veinées; mai, juin & septembre,
Feuilles: découpées en 7-9 divisions chevauchantes et finement divisées, elles se colorent bien en automne,   
Utilisation: mi-ombre Massif,  Jardin sauvage, , forme une inflorescence dense bien au dessus du feuillage. Les formes présentent dans la nature sont nombreuses et variables, tant au niveau du port que des fleurs.

Description botanique :

C. AEDO: THE GENUS GERANIUM L. IN NORTH AMERICA. II
Herbs perennial, 10-50 cm tall. Rootstock 5-8 mm diam., horizontal, not tuberculate, not turnip-shaped. Stem erect, solitary, with retrorse, appressed, eglandular hairs 0.2-0.5mm long. Basal leaves in a persistent rosette; cordate, palmatifid (divided for 0.69-0.82 of its length), pilose, with appressed, eglandular hairs; segments 7, rhombic, 9-11 mm at the base, 20-34-lobed in distal half (ratio main-sinus length of the middle segment / middle-segment length = 0.18-0.32); cauline leaves alternate (usually 1-2); petioles to 24 cm long, with retrorse, appressed, eglandular hairs 0.2-0.5 mm long; stipules 9-14 - 2-4.5 mm, lanceolate, with eglandular hairs on abaxial surface and on the margin, glabrous adaxially. Inflorescence a dichasial cyme; cymules 2-flowered, solitary or in aggregates at the top of each branch; peduncles 0-3.7 cm long, pilose, with retrorse, eglandular hairs 0.2-0.6 mm long, rarely with glandular hairs 1.1-1.9 mm long; bracteoles 2-3 - 1 mm, linearlanceolate, with eglandular and glandular hairs on abaxial surface and on the margin, glabrous adaxially; pedicels 0.4-1.8 cm long, with eglandular, patent to retrorse hairs 0.2-
0.6 mm long, and usually with glandular hairs 1.1-1.9 mm long; pedicel and peduncle together not overtopping the subtending leaf. Sepals 7-10 - 3-4 mm (ratio pedicel length / sepal length = 0.6-1.8), smooth, not accrescent, 3-5-nerved, with mucro 1-2.5 mm long, with scarious margins 0.1-0.2 mm wide, with eglandular, antrorse, appressed hairs 0.2-0.5 mm long and glandular, patent hairs 0.9-2 mm long on the abaxial side, glabrous adaxially. Petals 15-20- 9-12 mm (ratio petal length / petal width = 1.1-1.6), erect-patent, entire, without claw, glabrous on the adaxial side, hairy on the base of abaxial side, ciliate on the basal margin, purplish. Stamens 10, both whorls bearing anthers; filaments 9-11 mm long, not exserted, lanceolate with an abruptly narrowed apex, pilose on the abaxial side,
ciliate on the proximal half, with hairs 1-3 mm long; anthers 2.5-3 - 1 mm. Nectaries glabrous. Gynoecium 9-10 mm long. Fruit 30-37 mm long, erect when immature; mericarps 3.5-4 - 2-2.5 mm, without a strand of fibres, smooth, without longitudinal rib, without basal beak, with a basal callus, with eglandular, ± patent hairs 0.1-0.6 mm long, and glandular hairs 1-1.4 mm long, brownish; rostrum 25-29 mm long, with a narrowed apex 5-6 mm long, with ± patent, eglandular hairs 0.1-0.2 mm long, and glandular 1-1.2 mm long; stigmatic remains 2 mm long (ratio fruit length / stigmatic remains length = 14-16), with 5 glabrous lobes. Seeds 2-2.1 - 1.7 mm,
smooth, brownish; hilum 1/4 as long as the perimeter. Cotyledons entire. 2n = 28. Flowering June-August. Sandy grassy beach, meadows, bogs, and alpine slopes; 0-1600 m. China, Siberia, Subartic America & Western Canada.

Notes :

Collecteurs: T. Schultz: coll. Mts .Chugach - Glenalp -Alaska.  

Reçu le 16/1/1996 de Friedrich-Schiller-Universität, institut für Spezielle Botanik, Botanischer Garden, Fünstengraben 26, DO7743 JENA? Allemagne: graines collectées dans le jardin botanique.