Question: Which genus Gaylussacia or Lychnis has more species ?

Context paragraphs:
Guzmania lychnis: Guzmania lychnis is a species in the genus "Guzmania".  This species is native to Venezuela, Colombia, and Ecuador.

Gaylussacia: Gaylussacia is a genus of about fifty species of flowering plants in the family Ericaceae, native to the Americas, where they occur in eastern North America and in South America in the Andes and the mountains of southeastern Brazil (the majority of the known species).  Common English names include huckleberry (shared with plants in several other genera) and "dangleberry".

Silene: Silene is a genus of flowering plants in the family Caryophyllaceae.  Containing approximately 700 species, it is the largest genus in the family.  Common names include campion (which is shared with the related genus "Lychnis") and catchfly.  Many "Silene" species are widely distributed, particularly in the northern hemisphere.

Lychnis: Lychnis is a genus of 15-25 species of flowering plants in the family Caryophyllaceae, native to Europe, Asia and north Africa.  The genus is closely related to (and sometimes included in) "Silene", differing in the flowers having five styles (three in "Silene"), the seed capsule having five teeth (six in "Silene"), and in the sticky stems of "Lychnis".  Common names include "campion" (shared with "Silene") and "catchfly", the latter name based on the sticky stems.

Supporting paragraphs: Gaylussacia Lychnis
Answer: Gaylussacia