Page 8 - 《广西植物》2020年第1期
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4                                      广  西  植  物                                         40 卷
   2 ̄or 4 ̄hornedꎬ rarely 0 ̄hornedꎬ rhombic or triangular ̄  13412 ( IBSCꎬ WUK )ꎻ Huizhouꎬ W. Chen 9685
   rhombicꎬ exocarp succulentꎬ endocarp stonyꎻ crowns  (IBSC). Guizhou: Jingpingꎬ C. Y. Wang 770012
   conspicuousꎬ tetragonal or roundedꎬ rarely dome ̄shapeꎬ  (JXU). Hebei: Anxinꎬ Baiyangdianꎬ Z. Y. Cao 54
   or crownless and inconspicuousꎬ apex conspicuously  ( PE ). Heilongjiang: Songjiangꎬ G. Z. Wang et
   beakedꎬ or beakless. Seed 1ꎻ cotyledons unequalꎬ one  al. 1282 ( IFP ). Henan: Mt. Funiushanꎬ Henan
   large starchyꎬ and the other smallꎬ scale ̄likeꎻ   For. Bur. Exped. 514 ( PE). Hubei: Jingshanꎬ a ̄
   endosperm absent.                                 nonymous   225   ( JXU ).   Hunan:   Qianyangꎬ
       Two species: Trapa incisa and T. natansꎬ and  anonymous 491 (PE). Jiangsu: Gaoyouꎬ East China
   T. natans were divided into six varieties in Chinaꎬ  Exped. 2608 ( NAS)ꎻ Liyangꎬ C. C. Chang 1673
   mainly distributed in middle and lower catchment of the  ( NAS )ꎻ Suiningꎬ anonymous 20297 ( NAS )ꎻ
   Yangtzi River.                                    Suzhouꎬ H. Migo s. n. ( NAS!). Jiangxi: Ji’ anꎬ
       1. Trapa incisa Siebold & Zucc.ꎬ in Abh. Math. ̄  B. Y. Ding & T. Huang 6400 ( HZU)ꎻ Linchuanꎬ
   Phys. Cl. Königl. Bayer. Akad. Wiss. 4 ( 2): 134.  Y. Tsiang 9794 ( NASꎬ IBSC )ꎻ Nanchangꎬ W.
   1845. ≡ T. bispinosa Roxb. var. incisa ( Siebold &  H. Wan 770005 ( JXU )ꎬ H. Migo s. n. ( NAS )ꎬ
   Zucc.) Franch. & Sav.ꎬ Enum. Pl. Jap. 1: 171.     X. X. Yang 10780 ( IBSC ). Jilin: Fuyuꎬ Y. L.
   1875. ≡ T. natans L. var. incisa ( Siebold & Zucc.)  Chang & S. D. Zhao 2751 ( IFP )ꎻ Chunhuaꎬ Z.
   Makinoꎬ Bot. Mag. ( Tokyo) 11: 283. 1897. Type:   Y. Wang et al. 2108 ( IFP ). Liaoning: Shenyangꎬ
   JAPANꎬ without precise localityꎬ P. F. Siebold s.  G. Q. Guan s. n. ( SYAU)ꎻ Kaiyuanꎬ P. Y. Fu &
   n. (lectotype: Mꎬ designated by S. Akiyama et al. in  Y. L. Chang 3061 ( IFP)ꎬ 3071 ( IFP ). Shaanxi:
   2016: 20).                                        Nanzhengꎬ K. T. Fu 5486 (PE). Shanghai: Liuheꎬ
                                 细果野菱  Fig. 1        H. Migo s. n. ( NAS). Yunnan: Daliꎬ C. W. Wang
       Herbs annualꎬ floating. Stem slenderꎬ 1-2.5 mm  63487 (KUNꎬ NAS). Zhejiang: Deqingꎬ T. N. Liou
   in diam. Leaves dimorphic: Floating leaves alternateꎬ  7942 (PE)ꎻ Hangzhouꎬ B. Y. Ding & Q. M. Zhang
   crowned at tops of stems or branchesꎬ rosetteꎻ leaf  1816 ( HZU )ꎬ 2120 ( HZU )ꎬ B. Y. Ding 2001
   blades triangular ̄ovateꎬ 1.5-2.5 cm × 2-3 cmꎬ in ̄  (HZU)ꎬ 2287 ( HZU)ꎻ Jinhuaꎬ B. Y. Ding 3983
   cised ̄dentate at upper margin and entire at lower mar ̄  (HZU)ꎻ Jinyunꎬ B. Y. Ding 4877 (HZU)ꎻ Pujiangꎬ
   ginꎬ broadly cuneate at baseꎻ petioles slenderꎬ   B. Y. Ding & W. S. Yao 4449 ( HZU)ꎻ Shaoxingꎬ
   slightly inflated at middle. Submerged leaves smallꎬ  B. Y. Ding & Q. M. Zhang 1798 ( HZU )ꎬ 1806
   caducous. Flowers pinkꎬ solitary in leaf axilsꎻ pedicel  (HZU)ꎬ 2176 (HZU)ꎬ B. Y. Ding & M. Z. Shi 6201
   1- 2 cm long. Sepals 4ꎻ petals 4ꎬ disk entireꎻ    (HZU)ꎻ Tiantaiꎬ Zhejiang Bot. Exped. 28406 (HZU)ꎻ
   stamens 4ꎬ filaments slenderꎬ anthers introrseꎬ versa ̄  Yinxianꎬ B. Y. Ding & M. Z. Shi 6211 (HZU)ꎻ Yiwuꎬ
   tileꎻ ovary partly inferiorꎬ style subulateꎬ stigma capi ̄  W. H. Huang 8358 (HZU).
   tates. Fruits triangular ̄rhombicꎬ 1-1.2 cm tallꎻ pedi ̄  Distribution. from south to north region of East
   cels ca. 2. 5 cm longꎻ 4 ̄hornedꎬ 2 upper horns    Chinaꎬ also in Myanmarꎬ Indonesiaꎬ Japanꎬ Koreaꎬ Lo ̄
   slightly obliquely horizontalꎬ barbellateꎬ 2 lower horns  asꎬ East Russiaꎬ Thailand and Vietnam.
   downwardꎬ barbellateꎻ beaks ca. 3 mm longꎬ            Note. The nameꎬ Trapa maximowicziiꎬ was
   crownless. Fl. May ̄Sept. and fr. Jun.-Oct.        misused in this entity by some Chinese scholars (Yanꎬ
       Additional collections studied. China. Anhui:  1983ꎻ Wanꎬ 1984ꎬ 2000ꎻ Yuꎬ 1994). Trapa incisa is a
   Anqingꎬ H. Migo s. n. ( NAS)ꎻ Chaohu Lakeꎬ B.     distinct speciesꎬ with smaller leavesꎬ flowers and
   Y. Ding et al. 6221 ( HZU )ꎻ Dangtuꎬ Dangtu       fruits. The floating leaves of Trapa incisa are rhombicꎬ
   Exped. 1011 ( NAS!)ꎻ Jingxianꎬ H. Zhang 843       incised ̄dentate on upper marginꎬ flowers pinkꎬ fruit 4 ̄
   (NAS)ꎻ Shuchengꎬ East China Exped. 4065 (PE)ꎻ     hornedꎬ with 2 upper horns barbellateꎬ and beak con ̄
   Wuhuꎬ H. Migo s. n. ( NAS ). Fujian: Fuzhouꎬ      spicuous.
   M. S. Li 1100 ( IBSC )ꎻ Nanjingꎬ S. M. Hwang          2. Trapa natans L.ꎬ in Sp. Pl. 1: 120. 1753.
   190047 ( IBSC). Guangdong: Dinghuꎬ G. L. Shi      Type: ITALYꎬ Mantuaꎬ2 Sept.1902ꎬ A. Fiori et al. 471
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