Cactaceae
ลักษณะเด่นของพืชวงศ์ ์Cactaceae (กระบองเพชร)
1. เป็นไม้ยืนต้น
2. มีตุ่มหนาม (areole)
3. มีกลีบเลี้ยงแยกจากกลีบดอก
1. เป็นไม้ยืนต้น
2. มีตุ่มหนาม (areole)
3. มีกลีบเลี้ยงแยกจากกลีบดอก
การแบ่งตามลักษณะทั่วไปในอาณาจักรพืช
1. เป็นพืชใบเลี้ยงคู่
2. เมล็ดมีเปลือกหุ้ม
3. มีท่อลำเลียงน้ำและอาหาร
(คลิกที่ภาพ เพื่อชมภาพขยาย)
The cactuses are succulent plants that grow either as trees, shrubs or in the form of ground cover. Most species grow on the ground, but there is also a whole range of epiphytic species. In most species, except for the sub-family of the Pereskioideae (see image), the leaves are greatly or entirely reduced. The flowers, mostly radially symmetrical and hermaphrodite, bloom either by day or by night, depending on species. Their shape varies from tube-like through bell-like to wheel-shaped, and their size from 0.2 to 15-30 meters. Most of them have numerous sepals (from 5 to 50 or more), and change form from outside to inside, from bracts to petals. They have stamens in great numbers (from 50 to 1,500, rarely fewer). Nearly all species of cacti have a bitter milk-like substance contained within them. The berry-like fruits may contain few, but mostly many (3,000), seeds, which can be between 0.4 and 12 mm long.[3]
1. เป็นพืชใบเลี้ยงคู่
2. เมล็ดมีเปลือกหุ้ม
3. มีท่อลำเลียงน้ำและอาหาร
(คลิกที่ภาพ เพื่อชมภาพขยาย)
ภาพจากข้อมูลของ A-Z ENCYCLOPEDIA of GARDEN PLANTS
โดย
Christopher Brickell : Editior in Chief : สำนักพิมพ์ : DORLING KINDERSLEY
Cactus
From Wikipedia, the free encyclopedia
The cactuses are succulent plants that grow either as trees, shrubs or in the form of ground cover. Most species grow on the ground, but there is also a whole range of epiphytic species. In most species, except for the sub-family of the Pereskioideae (see image), the leaves are greatly or entirely reduced. The flowers, mostly radially symmetrical and hermaphrodite, bloom either by day or by night, depending on species. Their shape varies from tube-like through bell-like to wheel-shaped, and their size from 0.2 to 15-30 meters. Most of them have numerous sepals (from 5 to 50 or more), and change form from outside to inside, from bracts to petals. They have stamens in great numbers (from 50 to 1,500, rarely fewer). Nearly all species of cacti have a bitter milk-like substance contained within them. The berry-like fruits may contain few, but mostly many (3,000), seeds, which can be between 0.4 and 12 mm long.[3]
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