Calamus compsostachys is a species of flowering plant in the Arecaceae family.It is found only in China (Guangdong, Guangxi).
 Its natural habitats are subtropical or tropical dry forests and subtropical or tropical moist lowland forests.
Calamus egregius is a species of flowering plant in the Arecaceae family.
Calamus nambariensis is a species of flowering plant in the Arecaceae family.
 It is found in Burma, Laos, Vietnam, Thailand, Nepal, Bhutan, Bangladesh, the Assam region of India and the Yunnan region of China.
Calamus tenuis is a species of flowering plant in the Arecaceae family.
Calamus is a genus of the palm family Arecaceae.
 These are among several genera known as rattan palms.
 There are an estimated 400 species in this genus, all native to tropical and subtropical Asia, Africa, and Australia.
 They are mostly leaf-climbing lianas with slender, reedy stems.
 To aid scrambling some species have evolved hooks on the underside of the midrib, or more commonly by modified "pinnae" or tendrils in the form of stout, backward-pointing spines.
 These stems may grow to lengths of 200 metres.
Calamus wailong is a species of flowering plant in the Arecaceae family.
Ruscus is a genus of six species of flowering plants, native to western and southern Europe (north to southern England), Macaronesia, northwest Africa, and southwestern Asia east to the Caucasus.
 In the APG III classification system, it is placed in the family Asparagaceae, subfamily Nolinoideae (formerly the family Ruscaceae).
 Like many lilioid monocots, it was formerly classified in the family Liliaceae.

Question: Which is a species of flowering plant, Ruscus or Calamus?
Answer: Ruscus