Question: Which has more species, Dichroa or Orostachys?

Context paragraphs:
Makira starling: The Makira starling ("Aplonis dichroa"), also known as the San Cristobal starling, is a species of starling in the family Sturnidae.  It is endemic to the Solomon Islands.  Its natural habitat is subtropical or tropical moist lowland forests.

Trithemis dichroa: Trithemis dichroa, the Small Dropwing, is a species of dragonfly in the family Libellulidae.  It is found in Angola, Benin, Cameroon, Central African Republic, the Democratic Republic of the Congo, Ivory Coast, Equatorial Guinea, Ghana, Guinea, Liberia, Mali, Nigeria, Sierra Leone, Sudan, Togo, Uganda, and Zambia.  Its natural habitats are subtropical or tropical moist lowland forests, rivers, and freshwater marshes.

Dichelopa dichroa: Dichelopa dichroa is a species of moth of the Tortricidae family.  It is found in Australia, where it has been recorded from South Australia, Victoria and New South Wales.

Acrosticta dichroa: Acrosticta dichroa is a species of ulidiid or picture-winged fly in the genus "Acrosticta" of the family Ulidiidae.

Dichroa: Dichroa is a genus of 12 species of flowering plants in the family Hydrangeaceae, native to eastern and southeastern Asia.  They are deciduous shrubs growing to 1-3 m tall, with their leaves arranged in opposite pairs.  The flowers are produced in a broad inflorescence similar to that of the related genus "Hydrangea".  The fruit is a glossy metallic purple-blue berry.

Orostachys: Orostachys is a genus of Crassulaceae that contains 14 accepted species.  It is a biennial herb growing in China, Japan, Kazakhstan, Korea, Mongolia, Russia.  Eight species occur in China.

Orostachys japonica: Orostachys japonica (Japanese：爪蓮華、昭和、秀女）also known as rock pine is a species of flowering plant in the genus "Orostachys".  Native to Japan.  Its main habitat is on the surface of mountain rocks in Korea and Japan, and rocks on low mountains along streams in China.

Sephisa dichroa: Sephisa dichroa, the western courtier, is a species of nymphalid butterfly found in South and Southeast Asia.  In South Asia, they are found along the Himalayas.

Stictoleptura dichroa: Stictoleptura dichroa is a species of beetle in the Cerambycidae family, that can be found in China, Korea and Russia.

Chorister robin-chat: The chorister robin-chat ("Cossypha dichroa") (previously known as the chorister robin) is a species of bird in the family Muscicapidae.

Supporting paragraphs: Dichroa Orostachys
Answer: Orostachys