Figures (2)  Tables (2)

    • Figure 1. 

      New water lily cultivar Nymphaea 'Sirius A'.

    • Figure 2. 

      New water lily cultivar Nymphaea 'Sirius B'.

    • Traits Sirius A Sirius B
      General overall shape of the flowers Stellate Stellate
      Flower petal color(s) White (RHS 155C) White (RHS 155C)
      Filament color Yellow (RHS 14A) Yellow (RHS 14B)
      Anther color Yellow (RHS 14A) Yellow (RHS 14B)
      Sepal abaxial color Yellow-green (RHS 152B) Light olive green
      (RHS 152C)
      Sepal adaxial color Grey-green
      (RHS 195B)      		 Pale grey-green
      (RHS 193C)
      Sepal number 5 4
      Diameter of flower (cm) 6 to 7 3 to 4
      Petal number 12 to 14 10 to 12
      Emergence height above water (cm) 11 to 13 6 to 8
      General overall shape of the leaves Broadly ovate Orbicular
      General margins of the leaves Entire Entire
      Leaves average length × width (cm) 7 × 8 10 × 11
      Leaves abaxial color Yellow-green (RHS 154B) Dark olive
      (RHS 152A)
      Leaves adaxial color Grass green
      (RHS 200C)      		 Grass green
      (RHS 144A)
      Petiole color Yellow-green
      (RHS 151A)      		 Yellow-green
      (RHS 154A)

      Table 1. 

      Morphological features of the new cultivars Nymphaea 'Sirius A' and 'Sirius B'.

    • Feature category Comparison item Nymphaea 'Sirius A' Nymphaea 'Sirius B' Remarks/differences
      Plant morphology Height above water 11−13 cm 6−8 cm 'Sirius A' is taller
      Leaf size (L × W) Mean 7 × 8 cm Mean 10 × 11 cm 'Sirius B' leaves are relatively larger
      Leaf shape Broadly ovate / Orbicular or suborbicular Orbicular / Orbicular or suborbicular Shapes are similar
      Adaxial surface Grass green (RHS 200C) Vivid green / Grass green (RHS 144A) 'Sirius B' is more vivid green
      Abaxial surface Yellow-green (RHS 154B) Dark olive (RHS 152A) 'Sirius B' is darker on the underside
      Flower morphology Flower diameter 6−7 cm 3−4 cm 'Sirius A' flowers are significantly larger
      Petal count 12−14 10−12 'Sirius A' has slightly more petals
      Flower color details White, tip suffused with very
      pale blue-white (RHS 202D)      		 White, tip suffused with pale blue-purple (RHS 91C) Purple tone is more distinct in 'Sirius B'
      Sepal count 5 4 Difference in sepal number
      Abaxial sepal color Yellow-green (RHS 152B) Light olive green (RHS 152C) Slight difference in green hue
      Filament/Anther color Golden yellow (RHS 14A) Golden yellow (RHS 14B) Slight code difference; both are golden yellow
      Other organs Peduncle color Dark olive (RHS 147A) Brownish-green (RHS 153B)
      Petiole color Yellow-green (RHS 151A) Yellow-green (RHS 154A)
      RHS = Royal Horticultural Society color chart number.

      Table 2. 

      Comparison of two new water lily cultivars.