accepted name (2005)

1997

Hong D-Y

Key to subspecies of Paeonia decomposita

Carpels nearly always 5; leaflets narrow, the terminal ones with a length-width ratio of (1.5-) 1.7- 2.7(- 3.3); lobes narrow, the terminal ones with a length-width ratio of (1.6 -) 2.4 – 3.7 (- 4.3)

...... subsp. decomposita

Carpels 2 - 5, mostly 3 or 4; leaflets wider, terminal ones with a length-width ratio of (1.0-) 1.2- 1.8 (-2.2); lobes wider, terminal ones with a length-width ratio of (1.0 -) 1.3 - 2.4(- 3.0)

..... subsp. rotundiloba

subsp. decomposita (Fig. 1B).

Specimens examined: ----------

chromsome Number. 2n=10 (Hong et al. 1988)

Distribution. China: Daduhe Valley of NW Sichuan.

Habitat. Thickets and young secondary forests with (Cotoneaster soongaricus, Rhamnus sp. Quercus sp., Rosa willmottiae, Berberis polyantha, Cupressus chengiana, Lespedeza sp. etc., and on cliffs and rocks in sparse conifer forests; 2050 - 3100 m.

subsp. rotundiloba D. Y. Hong subsp. nov. a subspecie typica carpellis 2 - 5 (plerumque 3 vel 4), foliolis latioribus apice acutis vel leviter obtusis lobis brevioribus latioribusque differt. Typus: China, NW Sichuan, Lixian. Hong De-yuan, Luo Yi-bo & He Yong-hua H95033 (holotypus PE, isotypi (GH/A, K, MO, US). Fig 1A.

specimens examined. ----------

chromsome Number. 2n=10 Voucher: NW Sichuan, Maoxian, 5 May 1989, Qiu Jun-Zhuan 8901 (PE)

Distribution. China: Mingjiang Valley of NW Sichuan.

Habitat. Well-developed thickets, young secondary forests, or sparse Cupressus chengiana forests, where it is usually found on rocks. Often associated with Quercus spp., Rhamnus sp., Rosa mulibracteata, Cotoneaster soongariscus, Ribes sp., Ostryopsis davidii, Cotinus coggygria, Spiraea sp., etc. 2050-3100m. Isolated from the typical subspecies by the Qionlai Range (4000m) (Map 1)

1999

MBG Tropicos Nomenclatural Data Base 18 Sep

1999

HONG De-Yuan & PAN Kai-Yu Taxonomical history and revision of Paeonia sect. Moutan (Paeoniaceae) Acta Phytotaxonomica Sinica 37(4):351-368(1999)

Carsten Burkhardt's Web Project Paeonia - The Peony Database

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