英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字,中文词皆可:



安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Cycad - Wikipedia
    Cycads ˈsaɪkædz —constituting the division Cycadophyta —are seed plants with a stout, woody cylindrical trunk with a crown of large, hard, stiff, evergreen and usually pinnate (feather-shaped) leaves The species are dioecious, that is, individual plants of a species are either male or female
  • Cycad | Description, Gymnosperm, Species, Examples, Uses, Taxonomy . . .
    Cycad, any of the palmlike woody gymnospermous plants that constitute the order Cycadales The order consists of three extant families, which contain about 10 genera and about 310 species Some cycads are used as ornamental conservatory plants and are cultivated outdoors in warm climates
  • Cycad Collection - The Huntington
    Among them is our collection of cycads, cone-bearing plants of ancient origin These plants have been around for hundreds of millions of years and once inhabited nearly every tropical and subtropical region of the world
  • Cycad - San Diego Zoo Animals Plants
    In fact, the Mesozoic era (65 to 230 million years ago) is often called the Age of Cycads and Dinosaurs, in honor of two of the most prominent lifeforms at the time There was a strong relationship between the two—it's believed that cycads were the main food source for herbivorous dinosaurs
  • How To Grow Cycads - Information On Cycad Care | Gardening Know How
    Cycad plants are hardy, evergreen gymnosperms (cone-bearing plants) that grow in sand or hard rock Cycads are dioecious plants; there are separate male and female plants The female plant produces seeds, and the male plant produces cones filled with pollen The most popular cycad is the sago palm They are slow growing and have a long life
  • Cycads - UC Botanical Garden at Berkeley
    Today, cycads are threatened with extinction because of illegal collection, habitat destruction, and loss of pollinators Cycads are the most primitive of surviving gymnosperms, or cone-bearing plants, with palm-like leaves and a thick soft stem of storage tissue, mostly lacking any true wood
  • What Is a Cycad? Ancient Plants With a Toxic Secret
    Often mistaken for palms or tree ferns, cycads are gymnosperms, meaning their seeds are not enclosed within an ovary They represent one of the oldest lineages of living seed plants, with a morphology that has changed little over geological time
  • Macrozamia - Cycads - farm garden - by owner - sale - craigslist
    I also have dozens of Encephalartos, Cycas, Dioon, Lepidozamia, Ceratazamia, Zamia Click on the “more ads by this user” link below to see a list of all my plants for sale ♥ best of [?] Macrozamia species 7 gallon size $79 (pic 4) pots to 36” boxes
  • Cycads – Wisconsin Horticulture
    Cycads are an ancient group of vascular plants that were once a prominent component of the world’s flora The oldest cycad fossils date to the early Permian (280 million years ago) or late Carboniferous period (300–325 million years ago)
  • Cycads – How to Grow and Care Guide : AGT - Aussie Green Thumb
    There are well over 300 species of cycad recorded by botanists around the world, 81 species of cycads endemic or native to Australia, but just a handful to grow at home





中文字典-英文字典  2005-2009