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南林物候记No.28 | 秤锤树——南京乡土植物中的“大熊猫”

  • 2026-04-10 06:24:18
南林物候记No.28 | 秤锤树——南京乡土植物中的“大熊猫”

        春意正浓,仿佛大自然打翻了缤纷的调色盘,各色花朵争相登场,令人眼花缭乱。在不知不觉间,已经来到了暖意涌动的4月,南林的校园中有一些看似不起眼的小树正静静绽放着洁白素雅的花朵,衬着翠绿的叶子,格外清秀动人。这便是中国特有的国家二级保护野生植物——秤锤树。

        秤锤树(Sinojackia xylocarpa)隶属于安息香科(Styracaceae)秤锤树属(Sinojackia),是一种花、果兼赏的落叶大灌木或小乔木。春日花期,纯白花朵如星如雪,随风轻曳,满树诗意;待到秋冬落叶归根,纺锤形的木质果实成串垂挂,古拙而别致。而“秤锤”之名,正源于其果实形似秤砣——宛如天平之砝码,沉静悬垂,余韵悠长。秤锤树的原产地和发现地就在江苏南京,是地地道道的的南京“原住民”。

        1927年,植物学家秦仁昌在南京幕府山采到野生秤锤树的果期标本,次年植物学家耿以礼又采集到了花期标本,并由著名植物学家胡先骕教授进行鉴定。胡先骕研究后认定它不属于已知任何属,便为其建立了一个新属——秤锤树属(Sinojackia),属名中的“Sino-”意为中国,“-jackia”则是致敬美国分类学家John George Jack。因此秤锤树的英文名叫Jacktree,译作“捷克木”。它的学名种加词“xylocarpa”译为“木质的果实”。

        由于历史原因,大量原产中国的植物由西方植物学家率先命名。而“秤锤树属”这一中国特有属的发表,标志着中国植物学家首次为中国特有的植物建立新属,打破了长期以来主要由西方学者命名的局面,在我国植物学史上具有里程碑式的意义。

左图:中国科学院植物研究所标本馆(PE)馆藏秤锤树模式标本

右图:秤锤树属发表的原始文献

(资料来源于中国数字植物标本馆https://www.cvh.ac.cn/)

        秤锤树的果实在发育的过程中,果皮木质素、纤维素、半纤维素持续积累,而位于中心的种子则被坚硬的木质组织和纤维完全包裹,这使得它们发芽困难,野外需要经历2-3年才能全部萌发。由于南京幕府山矿石开采导致其种群灭绝。至此,秤锤树被列入《世界自然保护联盟濒危物种红色名录》(IUCN)——濒危(EN),包括秤锤树在内的秤锤树属7种1变种均被列入中国国家二级保护野生植物,以期唤起公众的保护意识。

        从1927年秦仁昌在南京幕府山采下第一份标本,到如今多方力量共同守护,秤锤树走过了一段跌宕百年的历程。早期南京中山植物园、上海植物园、杭州植物园等地引种秤锤树,如今上海辰山植物园、南京玄武湖公园等地也引种栽培,供教学科普和游客观赏。与此同时,科研工作不断深入——南京林业大学科研团队通过多年调查、走访,结合现代分子生物技术,人工重建南京幕府山秤锤树种群,并进行扩繁,现以在句容市天王镇和溧水区林场大量种植。

        从实验室到城市园林,从迁地保育到重返山野,秤锤树的故事仍在续写。期待这株饱含历史沧桑的南京“土著”,能在更多人的守护下,重新扎根,四季常青。

南京林业大学

NFUEDU

南京林业大学融媒体中心

文案策划:赵鸿宇

图片:李煜东、赵鸿宇

排版:戴园青

责编:代欣怡

本期审核专家:沈永宝

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  1. CONNECT:[ UseTime:0.000532s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000656s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000287s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000273s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000481s ]
  6. SELECT * FROM `set` [ RunTime:0.000348s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000612s ]
  8. SELECT * FROM `article` WHERE `id` = 528272 LIMIT 1 [ RunTime:0.000451s ]
  9. UPDATE `article` SET `lasttime` = 1777059065 WHERE `id` = 528272 [ RunTime:0.000720s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000292s ]
  11. SELECT * FROM `article` WHERE `id` < 528272 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000657s ]
  12. SELECT * FROM `article` WHERE `id` > 528272 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000780s ]
  13. SELECT * FROM `article` WHERE `id` < 528272 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001093s ]
  14. SELECT * FROM `article` WHERE `id` < 528272 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001130s ]
  15. SELECT * FROM `article` WHERE `id` < 528272 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001130s ]
0.102835s