P. ostii (T. Hong & J. X. Zhang, 1992)[Hong, T. & Zhang, J. X., Bull. Bot. Res. Harbin, vol. 12 (3), 1992, p. 223-234] |
| First Description: | P. ostii (T. Hong & J. X. Zhang, 1992) |
| Synonyms: | P. ostii var. lishizhenii (Shen, 1997) P. suffruticosa subsp. yinpingmudan (D. Y. Hong, K. Y. Pan & Z. W. Xie, 1998) P. yinpingmudan (Shen, 2001) P. ostii subsp. lishizhenii (Shen, 2001) |
P. ostii (Flower) Photo: Juerg Plodeck (Basel, May 2023), © Copyright Juerg Plodeck 2023 [ click on image for full image ] |
| Plant: | Ploidy: | 2n=10 |
| Growth Type: | tree / shrub | |
| Height: | up to 150cm | |
| Roots: | ||
| others: | stems brown-grey | |
| Leaves: | # segmentation: | leaflets 11-15, lanceolate to ovate-lanceolate, mostly entire, often terminal ones 2- or 3-lobed |
| others: | lower leaves biternate, with 9 leaflets, very occasionally terminal leaflets 3-fid to the base, and with 11 or 15 leaflets; leaflets ovate-orbicular, 3-cleft, 4-8cm long, 3-11cm wide, glabrous above, villose along veins or throughout beneath; segments lobed, segments and/or lobes acute to rounded at the apex |
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| Flowers: | Season: | April to May |
| # flowers/stem: | solitary, terminal, single | |
| Bracts: | involucrate bracts 3-6, leaf-like | |
| Sepals: | 4-6, green-yellow, broad-elliptic or ovate-orbicular, shortly caudate or acute at the apex | |
| Petals: | usually 11-14, white, rarely pinkish, obovate, 5.5-8cm long, 4-6cm wide |
|
| Flower Colour: | white, rarely pinkish | |
| Filaments: | purple-red | |
| Anthers: | yellow | |
| Disk: | entirely enveloping carpels, purple-red, leathery, dentate or lobed at the apex | |
| others: | ||
| Fruit: | Season: | August |
| # of Carpells: | 5 | |
| Carpell: | densely tomentose | |
| Style / Stigma: | stigmas sessile, red | |
| Follicles / Ovary / Ovules: | follicles oblong, densely brown-yellow tomentose | |
| Seeds: | seeds brown-black, oblong-spherical or spherical, 8-9mm long, 7-8mm in diameter | |
| Habitat: | Location: | growing in deciduous broad-leaved forests or thickets at an altitude below 1600m |
| Soil: | ||
| Geogr. Distr.: | native to Anhui (Chaohu) and W Henan (Lushi County and Xixia County); widely cultivated in China as traditional medicine | |
| Countries: | China | |
| Common Names: | Osti's peony |
P. ostii (entire plant) Photo: Juerg Plodeck (Basel, May 2023), © Copyright Juerg Plodeck 2023 [ click on image for full image ] |
P. ostii (single leave from top) Photo: Juerg Plodeck (Basel, May 2023), © Copyright Juerg Plodeck 2023 [ click on image for full image ] |
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P. ostii (Flower) Photo: Juerg Plodeck (Basel, May 2023), © Copyright Juerg Plodeck 2023 [ click on image for full image ] |
P. ostii (Fruit / Seeds) Photo: Juerg Plodeck (Basel, May 2023), © Copyright Juerg Plodeck 2023 [ click on image for full image ] |