The Philodendron longilobatum, also known as the Great Dragonfly Philodendron, is a tropical climbing plant native to Brazil. It's known for its dark green, elongated, and pointed leaves with serrated edges that can grow up to 4 feet long. Here's a quick overview of its care: 
Light: Prefers bright, indirect light, but can tolerate low light. Avoid direct sunlight which can burn the leaves. 
Watering: Allow soil to dry out almost completely before watering and avoid excess water. 
Soil: Prefers well-draining soil rich in organic matter, like coco coir, with perlite or vermiculite for drainage. 
Humidity: Prefers dry environments. Adding extra humidity or misting can encourage harmful fungi. 
Support: Should be staked or allowed to climb a moss pole. 
Light variations: Variegated cultivars may need slightly more light.