A key of Prunus subg. Cerasus in Korea  

(Han et al., 2022, Korean journal of Plant Taxonomy 52: 54-63)

 

1. Style pubescent.

   2. Calyx tube cup-shaped.

 

      3. Calyx lobe straight, margin minutely serrate.

         4. Outer bud scale hair dense

P. ×yedoensis Ҹ̿ó뺢

         4. Outer bud scale hair sparse

P. ×nudiflora պ

      3. Calyx lobe revolute, margin entire

P. avium 红

   2. Calyx tube vase-shaped.

      5. Branchlets pendulous

P. spachiana óú

      5. Branchlets ascending

P. spachiana f. ascendens ú

1. Style glabrous.

   6. Calyx margin minutely serrate

P. speciosa ֺ

   6. Calyx margin entire.

      7. Pedicel glabrous.

         8. Inflorescences corymbose with peduncles

P. jamasakura

         8. Inflorescences umbellate with short peduncles or nearly no peduncles

P. sargentii 꺢

      7. Pedicel pubescent.

         9. Inflorescences corymbose with peduncles

P. serrrulata var. pubescens к

         9. Inflorescences umbellate with short peduncles or nearly no peduncles.

            10. Branchlet straight.

               11. Flowers single

P. verecunda var. verecunda

               11. Flowers double

P. verecunda var. semiplena ø

            10. Branchlet pendulous

P. verecunda var. pendula ó