A showcase of 150,000 living plants representing 2,500 species, displayed in both formal and natural settings. 10,000-sq.-ft. glass conser-vatory planted with more than 2,500 tropical plants native to Central and South America. Small waterfalls, ponds, and pathways throughout give visitors an idea what might be encountered in tropics. Garden Center open daily 8 a.m. - 10 p.m. Conservatory open Apr. - Oct. Mon. - Sat. 10 a.m. - 6 p.m.; Nov. - Mar. closes at 4 p.m. In wooded southwestern section of Trinity Park. Conservatory in the Cultural District; open daily. Entrance to botanical gardens free; fee for conservatory.