Page 10 - 《广西植物》2020年第1期
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6 广 西 植 物 40 卷
blades triangular ̄rhombicꎬ rhombic to reniformꎬ 2- 6 Additional collections studied. China. Beijing:
cm × 2. 5 - 8 cmꎬ incised ̄dentate or / and thinly Haidingꎬ anonymous 325 ( PE). Hebei: Chengdeꎬ
dentate at upper margin and entire at lower marginꎬ T. N. Liou 5084 ( IBSC )ꎻ Xushuiꎬ Baiyangdianꎬ
broadly cuneate at baseꎻ petioles 5-18 cm longꎬ in ̄ Hebei Agr. Univ. Exped. 44214 (PE). Heilongjiang:
flated at middleꎬ brown ̄pubescent. Submerged leaves Achengꎬ S. D. Zhao & Y. L. Chang 2773 ( IFP )ꎻ
smallꎬ caducous. Flowers whiteꎬ sometimes pink at Dailingꎬ G. D. Cui 4 ( NEFI)ꎬ D. M. Wang et al. 6
beginning floweringꎬ solitary in leaf axilsꎬ 1-2 cm in ( NEFI )ꎻ Harbinꎬ C. Z. Zheng 6337 ( HZU )ꎬ
diam. Sepals 4ꎻ petals 4ꎬ disk entireꎻ stamens 4ꎬ fil ̄ Y. L. Chang & S. D. Zhao 2763 ( IFP )ꎬ 2767
aments slenderꎬ anthers introrseꎬ versatileꎻ ovary ( IFP )ꎬ B. Skovclyr 1202 ( IFP )ꎻ Qiqihaerꎬ C.
partly inferiorꎬ thickened at base. Fruits rhombicꎬ S. Wang 947 (IBSC)ꎬ Y. B. Chang 6030 ( NEFI)ꎻ
1.8-2.8 cm tallꎬ 2.5-4.5 cm wideꎻ 4 ̄ or 2 ̄hornedꎬ Yichunꎬ T. N. Liou 3483 (PEꎬ IBSC). Hubei: Jing ̄
rarely 0 ̄hornedꎻ beaks conspicuous or inconspicuousꎬ menꎬ H. Migo s. n. ( NAS)ꎻ Yangxinꎬ H. Migo s.
crowned or crownless. Fl. Jul. - Oct. and fr. n. ( NAS ). Jiangsu: Baoying Lakeꎬ East China
Aug.-Nov. Exped. 2511 ( PEꎬ NASꎬ IBSC )ꎻ Hongze Lakeꎬ
2a. Trapa natans L. var. natans P. L. Yang 56 ( NAS)ꎻ Jiangpuꎬ anonymous 8472
Synonym: Trapa amurensis Flerovꎬ in Izv. (NAS)ꎻ Nanjingꎬ C. L. Tso 1368 ( PE)ꎻ Qidongꎬ
Glavn. Bot. Sada R. S. F. S. R. 24: 34. 1925. Type: anonymous 15372 ( NAS )ꎻ Yixingꎬ J. Shen 569
RUSSIAꎬ Bakharev at the site of Bura riverꎬ 22 (NAS). Jiangxi: Linchuanꎬ Y. Tsiang 9792 (NASꎬ
Jul. 1891ꎬ Korshinsky s.n. [ lectotype: LE ( barcode IBSC). Jilin: Antuꎬ T. N. Liou 3658 ( IBSC )ꎻ
01026022)ꎬ here designated!]. Chunhuaꎬ C. S. Wang et al. 2408 ( IFP )ꎻ Fuyuꎬ
Trapa manchurica Flerovꎬ Izv. Glavn. Bot. Sada Y. L. Chang & S. D. Zhao 2729 ( IFP )ꎬ 2731
R. S. F. S. R. 24: 37. 1925. Type: CHINAꎬ (IFP)ꎬ 2733 (IFP)ꎬ 2736 (IFP). Liaoning: Beizhenꎬ
Manschuria [ North ̄east China]ꎬ near city Harbinꎬ Y. L. Chang et al. 2785 ( IFP )ꎻ Jinxianꎬ Y. L.
bank Songari riverꎬ 8 Jul. 1903ꎬ Litwinov s.n. (lecto ̄ Chang et al. 2794 (IFP)ꎻ Shenyangꎬ Y. L. Chang &
type: LEꎬ here designated!)ꎻ syn. nov. X. D. Cui 2709 ( IFP )ꎻ Xinjinꎬ Z. S. Qin & C.
Trapa potaninii V. N. Vassil. in Komarovꎬ F. Fang 154 ( IFP )ꎻ Zhangwuꎬ C. Wang 2737
Fl. URSS 15: 693. 1949. Type: CHINAꎬ China bo ̄ ( IBSC ). Shaanxi: Meixianꎬ C. H. Wang 154
reali ̄occidentalis. Inter Ta ̄tsien ̄lu et Li ̄fan ̄du in (WUKꎬ PE)ꎻ Yangxianꎬ T. N. Liou & P. C. Tsoong
valle fl. Tungho supra pagum Huang ̄ni ̄puꎬ 22 3938 (PE). Shandong: Weishan Lakeꎬ T. Y. Cheo
Jul. 1905ꎬ G. N. Potanin s.n. (holotype: LE!). et al. 6915 ( NAS). Xinjiangꎬ Ehebuerjinꎬ H. Yu
Trapa sibirica Flerov var. saissanica Flerovꎬ s.n. (HZU).
Izv. Glavn. Bot. Sada R.S.F.S.R. 24: 33. 1925. ≡ Distribution. China (Hebeiꎬ Heilongjiangꎬ Hu ̄
T. saissanica ( Flerov ) Vassiljevꎬ Nov. Sist. Vys. beiꎬ Jiangsuꎬ Jiangxiꎬ Jilinꎬ Liaoningꎬ Shaanxiꎬ
Rast. 2: 429. 1965. Type: RUSSIAꎬ Tomsk Shandong and Xinjiang)ꎬ Japanꎬ Koreaꎬ Russia and
provinceꎬ Mariinskꎬ beside Lake Cherishtukolꎬ near Europeꎬ Africa.
tentꎬ lower Skoblinꎬ 2 Jul. 1908ꎬ Drobov Exped. 57 Note. Li & Chang (1977)ꎬ Yu (1994) recog ̄
(holotype: LE!ꎻ isotypes: LE!)ꎻ syn. nov. nized Trapa manchurica as a distinct speciesꎬ which
欧菱 (模式变种) Fig. 2 has larger fruits ( width vs. height = 0.5 - 1). From
Trapa natansꎬ with mid ̄sized leavesꎬ flowers and protologueꎬ Trapa manchurica had the fruits relatively
fruitsꎬ is widely distributed in the northern larger and beaks more conspicuous than those of
Hemisphere and various in morphology. T. natans has T. natans. Fruit morphology of Trapa manchurica and
compressed rounded leavesꎬ incised ̄dentate and T. amurensis are in variance range of T. natansꎬ and
thinly dentate at margin in luxuriantly growing statusꎬ the former two species were consequently reduced to
flowers whiteꎬ fruits 4 ̄horned and barbellate at apexꎬ T. natans. Trapa potaninii was distinguished in two
crowns and beaks conspicuousꎬ fresh exocarps green. lower horns obtuseꎬ not acute and barbellateꎬ which