仙人掌开花了！组图图片动画 2010-09-28 07:06:06 阅读89 评论11 字号：大中小 订阅 A cactus is any member of the spine plant family Cactaceae, native to the Americas.仙人掌是任何家庭脊柱植物仙人掌，原产于美洲的成员。 They are often used as ornamental plants, but some are also crop plants.它们通常是用来作为观赏植物，但有些也作物。 Cacti are part of the plant order Caryophyllales, which also includes members like beets, baby's breath, spinach, amaranth, tumbleweeds, carnations, rhubarb, buckwheat, plumbago, bougainvillea, chickweed and knotgrass.仙人掌是植物秩序石竹，其中也包括像甜菜部分成员，婴儿的呼吸，菠菜，苋菜，风滚草，康乃馨，大黄，荞麦，石墨，九重葛，繁缕和两耳草。
The cacti are spine plants that grow either as trees, shrubs or in the form of ground cover.脊柱的仙人掌是植物生长的树木，灌木或在地面覆盖的形式，。 Most species grow on the ground, but there is also a whole range of epiphytic species.大多数物种生长在地面上，但也有附生植物的整个范围。 In most species, except for the sub-family of the Pereskioideae, the leaves are greatly or entirely reduced.在大多数物种，除分的Pereskioideae家庭，叶有很大或完全减少。 The flowers, mostly radially symmetrical and hermaphrodite, bloom either by day or by night, depending on species.花，主要是径向对称和雌雄同体，无论白天或夜间开花，物种而定。 Their shape varies from tube-like through bell-like to wheel-shaped, and their size from 0.2 to 15-30 centimeters.它们的形状各不相同的电子管通过钟般的轮型，其0.2至15-30厘米的大小。 
Most of them have numerous sepals, and change form from outside to inside, from bracts to petals.他们大多有许多萼片，改变从外到内的形式，由苞片的花瓣。 They have stamens in great numbers.他们有大批雄蕊。 Nearly all species of cacti have a bitter sometimes milky sap contained within them.几乎所有品种的仙人掌，有时有一个痛苦的乳白色汁液包含在其中。 The berry-like fruits may contain few, but mostly many, seeds, which can be between 0.4 and 12 mm long.浆果类的水果可能含有一些，但主要是很多，种子，可以0.4至12毫米长。 
The life of a cactus is seldom longer than 300 years, and there are cacti, which live on 
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