1. Pineapple tree, 10-20 meters high, 30-50 cm in diameter at breast height; old trees often have plate-like roots; bark is thick, dark brown; branchlets are 2-6 mm thick, with longitudinal wrinkles To smooth, hairless; stipules hug the stem and are ring-shaped, with obvious traces. The leaves are leathery, spirally arranged, oval or obovate, 7-15 cm or longer in length and 3-7 cm in width.

2. The apex is blunt or acuminate, the base is wedge-shaped, the mature leaves are entire, or the leaves on saplings and germinating branches are often split, the surface is dark green, after drying it is light green or light brown, hairless, Glossy, light green on the back, slightly rough, mesophyll cells with long arms, spherical or oval resin cells in the tissue, lateral veins pinnate, 6-8 on each side, midrib significantly raised on the back; petiole length 1-3 cm; stipules are clinging to the stem, ovate, 1.5-8 cm long, the outside is attached pubescent or hairless, falling off. :

Pineapple tree Yellow pineapple tree species like light but cannot tolerate shade. Suitable for deep, fertile, moist sandy loam soil, loamy alluvial soil or brown forest soil on both sides of river valleys and in the middle and lower parts of hillside with cold and humid climate below 1,000 meters above sea level. It is tolerant to mild saline-alkali and can be grown in soil with a pH value of 8.5. can grow normally.