According to their usages , they are divided into 12 groups : edible plants , medicinal plants , landscape gardening and ornamental plants , timber plants , fiber plants , starch plants wild oil - bearing plants , wild forage plants , honey plants , aromatic oil plants , tanning plants , poisonous plants 按其经济用途，可分为12类：食用植物、药用植物、园林绿化与观赏植物、用材植物、纤维植物、淀粉植物、油脂植物、饲用植物、蜜源植物、芳香油植物、鞣料植物、有毒植物。
2.
The characteristics of plant resources are : the species components are complex and the advantage phenomenon is obvious ; they have diverse geographical elements and are mainly composed by temperate ones but with some tropic ones ; the main plant resources include medicinal plants , starch plants , fiber plants and potherb plants 植物资源有如下特点：种类组成丰富，优势现象明显；植物区系复杂多样，以温带成分为主，但兼有一定热带成分；大宗植物资源以药用植物、淀粉植物、纤维植物和野菜植物为主。
3.
14 species are edible plants , 37 species are medicinal plants , 11 species are ornamental plants and31 species are feeding plants , the major types of halophytic vegetation in hebei province include ptenothalophyta such as tamarix chinensis brush and siberian brush , and littoral halophytic vegetation such as succulent vegetation , poion , chomophyte and etc . epidermal cell exosporium of tamarix chinensis blade is papillous and capillaceous ; stoma and salt - secreting gland are under the epidermis ; differentiation level of mesophyll tissue is rather high ; porder camber is obvious ; and mechanical tissue is developed 河北省盐生植物的经济价值较高，其中可食用的盐生植物共计14种，可药用的盐生植物37种，可饲用的盐生植物31种，具有观赏价值的盐生植物11种，可以作为纤维植物计约9种。河北省主要盐生植被类型有柽柳灌丛、西伯利亚白刺灌丛等落叶灌丛和肉质型、禾草型、杂类草型盐尘植被等滨海盐生植被。
