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Table 1 Description of the morphological characteristics scored for morphologically ‘pure’ V. atratum and V. japonicum plants and morphologically intermediate plants, and the results of one way ANOVA or Kruskal-Wallis ANOVA of morphologically ‘pure’ V. atratum and V. japonicum plants

From: Long-term persisting hybrid swarm and geographic difference in hybridization pattern: genetic consequences of secondary contact between two Vincetoxicum species (Apocynaceae–Asclepiadoideae)

Morphological characteristic Label Trans. Species F (dF = 1)
Maximum leaf blade length (cm) LL None 127.70***
Maximum leaf blade width (cm) LW None 34.89***
Petiole length (cm) PL1 None 0.03
Stem length (cm)a SL Log 2.12
Hair density on adaxial leaf surface (cm)b HDL None ***
Hair density on abaxial leaf surface (cm)c HBL None ***
Number of flowers NF None 5.41*
Pedicel length (cm) PL None 5.08*
Pedicel width (cm) PW None 1371.00***
Corolla diameter (cm) CLD None 649.10***
Hair density on corolla outside (cm)d HCO None ***
Hair density on corolla inside (cm)e HCI None ***
Corona diameter (cm) CND None 1882.00***
Gynostegium length (cm) GYL None 2027.00***
Gynostegium diameter (cm) GYD None 2913.00***
Corpusculum length (cm) COL None 1154.00***
Pollinia length (cm) POL None 378.30***
  1. aTrans. = transformations applied to achieve normality and homogeneity of variances (Log = Natural Logarithm)
  2. bOrdinal grades 1–10. 1 = less than 20, 2 = 21–40, 3 = 41–60, 4 = 61–80, 5 = 81–100, 6 = 101–120, 7 = 121–140, 8 = 141–160, 9 = 161–180, and 10 = 181–200 (hairs/cm2)
  3. cOrdinal grades 1–10. 1 = less than 40, 2 = 41–80, 3 = 81–120, 4 = 121–160, 5 = 161–200, 6 = 201–240, 7 = 241–280, 8 = 281–320, 9 = 321–360, and 10 = 361–400 (hairs/cm2)
  4. dOrdinal grades 1–10. 1 = less than 10, 2 = 11–20, 3 = 21–30, 4 = 31–40, 5 = 41–50, 6 = 51–60, 7 = 61–70, 8 = 71–80, 9 = 81–90, and 10 = 91–100 (hairs/cm2)
  5. eOrdinal grades 1–10. 1 = less than 10, 2 = 11–20, 3 = 21–30, 4 = 31–40, 5 = 41–50, 6 = 51–60, 7 = 61–70, 8 = 71–80, 9 = 81–90, and 10 = 91–100 (hairs/cm2)
  6. * P < 0.05, ** P < 0.01, *** P < 0.001