무주나무
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EXIF Viewer카메라제조사Canon카메라모델명Canon EOS 60D촬영일자2015:06:06 09:09:33촬영자moohim감도(ISO)1250촬영모드조리개우선노출모드Auto exposure측광모드스팟측광노출시간1/250조리개 값f/3.5촛점거리100/1노출보정0/1플래쉬외장후레쉬화이트밸런스Manual사진 크기1024 X 683원본사진 크기5184 X 3456
무심거사
- 여러해살이 상록수
과 | 꼭두선이과(Rubiaceae) 18속 (피자식물문/목련강/꼭두선이목) |
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속 | 무주나무속(Lasianthus) 1종 |
국명 | 무주나무(희귀멸종위기 식물 : CR 멸종위기종)(멸종위기 야생 동식물 2급) |
학명 | Lasianthus japonicus Miq. |
분포 | 제주도 남원하례리, 타이완 일본 중국 |
전체크기 | 1.5m내외 |
형태 |
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개요 | 무주나무는 꼭두선이과 상록성 떨기나무로 「멸종위기 야생생물 Ⅱ급」 식물이다. 한라산 남쪽 상록수 숲속에 매우 드물게 나는 식물로 습도가 높고 부식질이 풍부한 곳을 선호한다. 자생지에 대한 개발이 주요 위협요인이다. 현재 한국적색목록에 멸종위기범주인 위기종(EN)으로 평가되어 있다. |
근연종* | Lasianthus japonicus Miquel, Ann. Mus. Bot. Lugduno-Batavi. 3: 110. 1867. 日本粗?木 ri ben cu ye mu Shrubs, 1-2 m tall; branches and branchlets glabrous or subglabrous to sparsely strigose on young branches. Petiole 3-10 mm, sparsely strigillose to strigose or subglabrous; leaf blade leathery or papery, lanceolate, lanceolate-oblong, or oblong, 9-15 × 2-3.5 cm, glabrous adaxially, glabrous to strigose or hirtellous abaxially, especially on lateral veins and nervules, base acute to obtuse, apex cuspidate or cuspidate-acuminate to long caudate; lateral veins 5-7 pairs or numerous; nervules reticulate; stipules generally persistent, triangular, 1-3 mm, glabrous to minutely hirsute to strigillose. Inflorescences congested-cymose, pedunculate to subsessile, densely strigillose; peduncle 1-2 mm; bracts 0.2-1 mm. Flowers sessile or subsessile. Calyx strigillose to glabrescent; hypanthium portion campanulate, 1-1.5 mm; limb 1-2 mm, 4- or 5-dentate; teeth short to well developed, linear. Corolla 13-14 mm at anthesis, glabrous outside or sometimes puberulent on lobes, villous inside; tube 9-10 mm; lobes 4 or 5, spatulate, 4-4.5 mm. Fruit globose, 5-6 mm in diam., glabrous; pyrenes 4 or 5. Fl. Apr-May, fr. Jun-Oct. Forests, shaded and wet places; 200-2300 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Sichuan, Taiwan, Xizang, Yunnan, Zhejiang [NE India, S Japan (Kyushu, Ryukyu Islands, Shikoku), Laos, N Vietnam]. This species is commonly collected in China. The leaf margin is often finely irregular, not crisped but actually undulate parallel to the looping tertiary venation that is near it. The leaves generally flush in a characteristic fashion, elongating but remaining rolled up and narrow, and are covered with notable sericeous pubescence on the exposed lower surfaces of the midrib and principal veins. This pubescence is often deciduous, leaving the mature lower leaf surface glabrous. Lasianthus japonicus is a widely distributed species from E Asia to the Himalaya. Lasianthus japonicus subsp. japonicus occurs in SE China to Japan, below 1800 m, and basically in the Sino-Japanese floristic region delineated by C. Y. Wu (Bull. Univ. Mus. Univ. Tokyo 37: 1-9. 1998). Lasianthus japonicus subsp. longicaudus occurs in SW China and NE India in the Himalaya, at 1000-2300 m, i.e., in the Sino-Himalayan floristic region of Wu. They are a typical vicariant pair of subspecies. It may be surprising that L. lucidus var. caudisepalus from Assam, NE India, is found to be conspecific with L. japonicus subsp. japonicus. However, the geological history of E Asia gives an explanation. The formation of the vicarious distribution patterns of the Sino-Himalayan and Sino-Japanese regions is supposed to be related to the uplift of Himalaya in the Tertiary. Lasianthus japonicus subsp. longicaudus could have differentiated with the uplift of Himalaya becoming an altitudinal vicariant taxon of L. japonicus. 1 Leaves usually long caudate at apex, lateral veins numerous, slender, very similar to nervules or subparallel secondary nerves; calyx and corolla 4-merous; calyx teeth reduced, limb almost truncate at apex. 20b subsp. longicaudus + Leaves cuspidate or cuspidate- acuminate at apex, lateral veins 5-7 pairs, ascending at an oblique angle, conspicuously different from reticulate nervules; calyx and corolla 4-merous or usually 5-merous; calyx with well-developed triangular or lanceolate teeth. 20a subsp. japonicus |
참고문헌 | Ann. Mus. Bot. Lugduno-Batavi 3:110 (1867) |
* 11-05-09 16:51:56:무주나무에서 변경(카르마)