P. delavayi (Franchet, 1886)[Franchet, A. R., Bull. Soc. Bot. France, vol. 33, 1886, p. 382] |
| First Description: | P. delavayi (Franchet, 1886) |
| Synonyms: | P. lutea (Delavay ex Franchet, 1886) P. angustiloba (Delavay ex Franchet, 1886) P. delavayi var. lutea (Finet & Gagnepain, 1904) P. delavayi f. superba (Lemoine, 1906) P. lutea var. supbera (Hort. ex, 1908) P. delavayi var. angustiloba (Rehder & Wilson in Sargent, 1913) P. delavayi var. atropurpurea (Schipczinsky, 1921) P. potaninii (Komarov, 1921) P. trollioides (Stapf ex Stern, 1931) P. delavayi var. alba (Bean, 1933) P. forrestii var. trollioides (Saunders, 1934) P. potaninii var. trollioides (Stern, 1943) P. angustiloba (Stapf ex Stern, 1946) P. potaninii f. alba (Stern, 1946) |
P. delavayi (Flower) - page with other flower colours Photo: Juerg Plodeck (Basel, May 2023), © Copyright Juerg Plodeck 2023 [ click on image for full image ] |
| Plant: | Ploidy: | 2n=10 |
| Growth Habit: | tree / shrub | |
| Height: | 20-180cm | |
| Roots: | tuberous with tubers up to 8cm long, 2cm in diameter | |
| others: | shoots simple but often with sterile branches in axils; glabrous throughout |
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| Leaves: | # segmentation: | 9 leaflets, first divided into 3-11 primary segments; segments divided again mostly to near the base or halfway into 2-11 secondary segments, thus each lower leaf with (17-)40-100(-312) segment |
| others: | lower 2 or 3 leaves biternate or ternate-pinnate, 15-30cm long (excluding petioles), 10-22cm wide; leaflets 9, first divided into 3-11 primary segments; segments divided again mostly to near the base or halfway into 2-11 secondary segments, thus each lower leaf with (17-)40-100(-312) segments; segments linear, linear-lanceolate, usually entire, 1.5-10cm long, 0.5-4.5cm wide, segments and lobes acute at the apex |
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| Flowers: | Season: | late April to mid June |
| # flowers/stem: | 2-3 on a shoot, terminal and axillary, forming a cyme, less frequently solitary and terminal | |
| Bracts: | involucrate bracts 1-5, leaf-like | |
| Sepals: | 2-9, green but pink at the base inside, or entirely purple or purple-red, rounded or triangular-rounded, mostly caudate, rarely rounded at the apex | |
| Petals: | 4-13, but mostly 7-11, yellow; yellow with a red or puple-red spot at the base, red, dark red, or dark purple-red, sometimes white, orange, green-yellow, or yellow with red margins | |
| Flower Colour: | yellow; yellow with a red or puple-red spot at the base, red, dark red, or dark purple-red, sometimes white, orange, green-yellow, or yellow with red margins | |
| Filaments: | yellow, pink, red, or dark purple-red | |
| Anthers: | yellow, pink, red, or dark purple-red | |
| Disk: | fleshy, 1-3mm high, incised, green, yellowish, yellow, red, or dark red | |
| others: | stamens 25-160 | |
| Fruit: | Season: | August to October |
| # of Carpells: | 2-4, very rarely 6-8 | |
| Carpell: | ||
| Style / Stigma: | stigmas sessile, yellow-green, yellow, red, or purple-red | |
| Follicles / Ovary / Ovules: | follicles oblong-ovoid, 2-4cm long, 1-1.5cm wide, brown at maturity ovaries usually gree, sometimes purple |
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| Seeds: | 1-6 in each follicle, brown-black, oblong, ca. 10mm long, ca. 8mm in diameter | |
| Habitat: | Location: | growing in sparse forests and thickets on granites, 2870-3450m altitude |
| Soil: | ||
| Geogr. Distr.: | enedmic to SW China: W Sichuan, E Tibet and Yunnan | |
| Countries: | China | |
| Common Names: | Delavay's tree peony |
P. delavayi (entire plant) Photo: Juerg Plodeck (Basel, May 2023), © Copyright Juerg Plodeck 2023 [ click on image for full image ] |
P. delavayi (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. delavayi (Flower) Photo: Juerg Plodeck (Basel, May 2023), © Copyright Juerg Plodeck 2023 [ click on image for full image ] |
P. delavayi (Fruit / Seeds) Photo: Juerg Plodeck (Basel, May 2023), © Copyright Juerg Plodeck 2023 [ click on image for full image ] |