Simplify the following text for a Grade 7 native English-speaking person.
Original: With some 190 genera and nearly 2500 recognized species , only the tribes Senecioneae and Astereae are larger .
Simplified: The Heliantheae is the third largest tribe in the sunflower family , which has 190 genera and about 2500 species . Only the tribes Senecioneae and Astereae are larger .