Is a Chinese name: Cycas
Is Pinyin: sutieshu
Is a Latin name: cycas
Flora of China: 07:4
Ⅰ level national key protected wild plants (State Department August 4, 1999 approved)
Cycas palm-like woody plants are evergreen. Stems cylindrical, by the persistent petiole base surrounded. Leaves pinnate, spirally arranged leaves, up to 0.5 ~ 2.4 m thick, leathery and hard, pinnae linear, up to 18 cm, a significant anti-roll edge. Take the top students, dioecious, the male cones cylindrical, slightly flat ball Female Flowers, flowering 6 to 8 months. Micro flat oval seeds, mostly red, 2 to 4 cm long. Cycas plants for the happy light, so was born in warm, dry and ventilated place. Not cold, slow growth. Soil to fertile, slightly acidic sandy soil is appropriate. Seed maturity of 10 months.
Cycads are the oldest on earth the seed plants from the Paleozoic, so far, 280 million years old. To the Jurassic, when cycads have been all over the world, to become the main food of dinosaurs.
The sperm of cycads have many flagella, are rarely born of seed plants such phenomenon.
All species:
Cycas labyrinth
Fork cycad leaves
Hainan cycad
South cycad
Cycad leaves boxing
Sichuan cycad
Cycads
Cycas
Taiwan cycad
Yunnan cycad |