Den. Aggregatum

Dendrobium aggregatum, also known as Dendrobium lindleyi, is a species native to the mountains of southern China and Southeast Asia. It flowers in spring with inflorescences of about 10–30 cm long having 5 to 15 flowers. Bright and cheery buttercup yellow/orange flowers on ribbed pseudobulbs with single leaves. It needs bright, indirect light, moderate to high humidity, and well-draining soil. Water it heavily during active growth, but reduce watering during the cooler months.