请输入您要查询的百科知识:

 

词条 broomrape
释义
broomrape
plant
any member of about 150 species of the genus Orobanche and its family (Orobanchaceae, order Lamiales), which contains 99 genera (including Boschniakia) and about 2,000 species in all. All are parasitic herbs, with little green tissue (i.e., they have little chlorophyll and do not produce their food photosynthetically to any great extent); instead, they draw nourishment from the roots of other plants by means of small suckers.
The broomrape family, which occurs in the Northern Hemisphere, is characterized by the nongreen colour of the plants, irregularly shaped flowers, scales in place of leaves, and one-chambered capsules that contain numerous minute seeds. The plants may be yellowish, brownish, purplish, or white.
随便看

 

百科全书收录100133条中英文百科知识,基本涵盖了大多数领域的百科知识,是一部内容开放、自由的电子版百科全书。

 

Copyright © 2004-2023 Newdu.com All Rights Reserved
更新时间:2024/9/21 20:52:00