Which tree variety is known as Sekkan-sugi?

The tree variety known as Sekkan-sugi is Cryptomeria japonica 'Sekkan-sugi'. This name translates to "Yellow Cedar" in English, referring to the distinctive yellow-green coloration of the foliage. Cryptomeria japonica, commonly known as Japanese cedar, is a popular conifer native to Japan. The 'Sekkan-sugi' cultivar is especially valued in ornamental horticulture for its unique appearance and its use in landscaping due to its attractive form and foliage. This specific cultivar has gained recognition not just for its beauty but also for its adaptability to various growing conditions, making it a sought-after choice for gardens and parks.

The other options listed refer to different tree species or cultivars that do not correspond to the name Sekkan-sugi, illustrating the specificity of botanical nomenclature and classification.