type: [tree peony] – [suffruticosa group] – [rockii-hybrid] - [Gansu mudan]

LAN-HE (Blue Lotus). Grower's name, Chen Dezhong, Peace Peony Nursery, Lanzhou, Gansu, P.R. China. From the seedling of P. rockii cv. Single lilac blue flower, 7.2 inches in diameter, flat peach flower bud. Larger petals extending flat, basal blotches purplish black 1.2x1 inches. White sheath enclosing fully carpels, stigmas creamy, anthers much, filaments pale purple only near the base. Stamens, pollen, seeds. Plant upright, strong grower, with many branches and suckers. Leaves narrow elongate, upper deep green and lower much hairy. Stem strength, hardy enough to resist winds and hold flower above the leaves. (Registered by Dr. Cheng Fangyun, Beijing Forestry University, Beijing, P.R. China). Colored picture on file. Bulletin #292.

Osti (1999)

LAN HE "Lotus Blue" A cultivar of Paeonia rockii cultivated in Gansu. Flowers: pink tending to mauve (a shade that the Chinese call blue) merging into white at the edges, large dark blotches at the base of the petals; semi - double; late flowering.

McLewin & Chen (2006) Peony rockii and Gansu Mudan

Lan He breeder, date: Chen Dezhong before 1985 engl. translation: Blue Lotus color & form classification categories , remarks: 6.1.08 not online: 188, 189, 050

Cheng Fangyun: 'Chinese Flare Mudan' (Beijing 2005)

'Lan He' description (in chinese) & picture available on page 146.

Li Jiajue 2005, Chinese Tree Peony, Xibei, Xinan, Jiangnan Volume

'Lan He' Single form, light blue. Selected, cultivated and named by Chen D.Z., internationally registered by Cheng Fangyun. [detailed description available on page 81]


To be called ”Lan He” in Chinese, with characteristics of blue flowers, single petals, 18cm×8cm corolla, flowers in clusters while blooming sweetly with leaves being patulous upwards, general growing situation with half-patulous posture, many sprouted base stems as well as the early blooming period.

available at


Wang et al. 2003

japanese name: Ranka

Carsten Burkhardt's Web Project Paeonia - The Peony Database


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