From our seed collection high up in the Central Mountain Range of Taiwan at 3220m altitude, where this small sprawling shrub grew in open very exposed mountainside along with a covering of dwarf bamboo and juniper. To 1m tall, a densely prickly shrub covered in flattened red spines. With 7-13-foliate leaves and bearing terminal white flowers. Differs from the type by not having strongly compressed prickles. Full sun well drained soil.