백두산양지꽃
| 과 | 장미과(Rosaceae) 42속 (피자식물문/목련강/장미목) |
|---|---|
| 속 | 양지꽃속(Potentilla) 27종 |
| 국명 | 백두산양지꽃 |
| 학명 | Potentilla baekdusanensis M. Kim |
| 개요 | Potentilla baekdusanensis M. Kim, sp. nov. (Figs. 1?3). TYPE: KOREA. Baekdusan Mt., elev. 800 m, 23 Apr 2017. M. Kim MK176212 (holotype, JNU; isotypes, JNU, KH, KB). Korean name: Baek-du-san-yang-ji-kkot 백두산양지꽃 Diagnosis: Potentilla baekdusanensis M. Kim can be distinguished from its related taxa P. fragarioides by having smaller plants with short and curved hairs, 7 leaflets, small lower leaflets, glabrous leaflet margin, and yellow petals with a reddish yellow base (Table 1). Herbs perennial. Roots numerous. Stolons absent. Flowering stems 5?22, ascending or spreading, 7?11 cm in length. Basal leaves pinnately compound with 7 leaflets, 4?9 cm including petiole; stipules light-brown, abaxially sparsely spreading villous; leaflets at intervals of 0.5?1.0 cm, shortly petiolulate or subsessile, pale green on abaxial surface, leaflets elliptic, 1.5?2.0 × 1.0?1.5 cm, adaxial surface pilose or not and abaxial surface pilose on vein, margins serrate and glabrous. Cauline leaves 2, 3-foliolate, leaflets obovate or elliptic, 0.9 × 0.4 cm, abaxial surface pilose, margin serrate and glabrous. Inflorescence terminal, corymbose-cymose. Flowers bisexual, 1.3?1.6 cm in diameter. Pedicel 1.9?2.5 cm, with short and curved hairs. Sepals 5, ovate, 3.5?4.0 × 2.0?2.5 mm; epicalyx segments 5, lanceolate, 2.3?2.8 × 1.2?1.5 mm, with short and curved hairs. Petals 5, yellow with a reddish yellow base, circular, 6?7 × 6?7 mm, apex emarginate. Style 1, subterminal, clavate, thickened at apex, 1 mm in length. Fruits achene, seeds subreniform, 1.0 × 0.8 mm. Flowering: April?May. Distribution: Korea (Baekdusan Mt.). Etymology: The specific epithet is derived from Baekdusan Mt., where this new species is found. |
| 근연종* | Key to Potentilla baekdusanensis and its related taxa 1. Style conic, thickened at base (Sect. Conostylae). 2. Leaves ternately compound ······ P. nivea 은양지꽃 2. Leaves pinnately compound. 3. Leaflets lobed ······················· P. chinensis딱지꽃 3. Leaflets serrulate. 4. Stolons present ···· P. stolonifera 제주양지꽃 4. Stolons absent. 5. Leaflets lower surfaces glabrescent ··········· ···························· P. supina 개소시랑개비 5. Leaflets lower surfaces pilose or glaucous · ································· P. dickinsii 돌양지꽃 1. Style clavate, thickened at apex (Sect. Potentilla). 6. Stolons present; leaves 3-foliolate or palmately 5-foliolate. 7. Leaves 3-foliolate ······ P. freyniana 세잎양지꽃 7. Leaves palmately 5-foliolate ································ ···································· P. flagellaris 덩굴뱀딸기 6. Stolons absent; leaves pinnately compound. 8. Leaflets thin, elliptic, margin ciliate or glabrous; petals 0.6?0.7 cm long. 9. Basal leaves 4?9 cm; leaflets 7, lower ones small (0.4?0.6 cm), margin glabrous; petal base reddish yellow ·················································· ·················· P. baekdusanensis 백두산양지꽃 9. Basal leaves 20?30 cm; leaflets 9?15, lower ones large (1?3 cm), margin ciliate; petal base yellow ························· P. fragarioides양지꽃 8. Leaflets thick, broadly ovate, margin densely white ciliate; petals 0.8?1.1 cm long ·················· ······························· P. gageodoensis 가거양지꽃 |
| 참고문헌 | https://doi.org/10.11110/kjpt.2018.48.1.37 |
