가는털백미
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무심거사
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설뫼*
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설뫼*
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설뫼*
| 과 | 협죽도과(Apocynaceae) 11속 (피자식물문/목련강/용담목) ---->박주가리과(Asclepiadaceae) |
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| 속 | 백미속(Cynanchum) 14종 |
| 국명 | 가는털백미 |
| 대표국명 | 가는털백미꽃 |
| 학명 | Cynanchum chinense R.Br. |
| 별명 | 좀박주가리 가는털백미꽃 |
| 개요 | Perennial herbs. Roots long, cylindrical tuberous. Stems twining, many branched, terete, pubescent, white latex. Leaves opposite, petiole 22.6?41.0 mm long, 1.0?1.6 mm wide; blades triangular or triangular-ovate, 1.6?7.9 cm long, 3.1?7.1 cm wide, apex acute or acuminate, base rounded or cordate rarely truncate, 4?7 colleters at base, margin entire, ciliolate, lateral veins 5?9 pairs, pubescent usually on veins. Inflorescences axillary to terminal, dichasial cyme, 2 to 32-flowered, usually branched at base, 11.7?73.4 mm long; peduncles 1.2?29.2 mm long, 0.4?1.2 mm wide, pubescent; pedicels 1.5?6.0 mm long, 0.2?0.6 mm wide, pubescent; bracts lanceolate, 0.8?1.9 mm long, 0.1?1.1 mm wide. Flowers calyx longer than corolla tube; tube short; lobes 5, lanceolate, apex acute, pubescent, 1?2 colleters between inside lobes; corollas white; lobes 5, linear-lanceolate, rounded, recurved, glabrous; coronas white; tubular, laminar, as long as gynostegium; lobes 5, fused with tube inside, apex linear, longer than gynostegium, usually recurved; corona appendages threadlike on lobes inside, shorter than lobes; gynostegia sessile; anthers 5, triangular-ovate, appendages exceeding gynostegium; lateral 2 anther wings projected on base; anther wings parallel to each other; pollinaria 5; corpusculum ellipsoid, 163?300 μm long, 100?133 μm wide; caudicles 60?70 μm long, attached to apical pollinium; pollinia pendulous, ellipsoid, 233?333 μm long, 100?167 μm wide; style heads conical, 2-divided umbonate. Fruit follicles, usually one per flower, linear, 84.0?129.8 mm long, 4.6?7.5 mm wide, pubescent. Seeds 36?64 per follicle, oblong, 4.3?6.9 mm long, 1.8?3.1 mm wide, winged, brown, glabrous; comas 17.7?40.6 mm long. Phenology: Flowering in August, fruiting from September to October. Korean name: Ga-neun-teol-baek-mi (가는털백미) (Chang et al., 2014; Korea National Arboretum, 2017). Distribution: China, Mongolia, and Korea (Incheon and Gyeonggi-do) |
| 근연종* | Key to the genus Cynanchum in South Korea Stems erect, apically twining; leaf blades linear to narrowly lanceolate ···················· C. thesioides (양반풀) 1. Stems twining, leaf blades triangular to ovate 2. Leaf basal lobes incurved; inflorescences dichasium; corolla lobes white; coronas tubular; follicles linear ··· ··········································· C. chinense (가는털백미) Leaf basal lobes not incurved; inflorescences umbellate cyme; corolla lobes yellow-green; coronas deeply lobed; follicles fusiform ············ C. wilfordii (큰조롱) |
| 참고문헌 | New distribution records of two rare species of Cynanchum (Apocynaceae) in South Korea: Cynanchum thesioides (Freyn) K. Schum. and Cynanchum chinense R. Br. Bo-Mi NAM, Sungyu YANG, Gyu Young CHUNG Korean J. Pl. Taxon. 2020;50(1):1-7. Published online March 31, 2020 DOI: https://doi.org/10.11110/kjpt.2020.50.1.1 |
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