Branchlets never spinose , never corky or winged .

小枝从未具刺，从未木栓质的或具翅。

Leaves long linear , graminoid or shortly setiform , apex spinose .

叶子长线形，禾草状或短刚毛状的，具刺的先端。

Stems prostrate or ascending ; leaves linear , green , apex spinose .

茎匍匐或上升；叶线形，绿色，先端具刺。

Shrubs or small to medium-sized trees , erect or straggling , often climbing , evergreen or deciduous , often spinose .

灌木或小的到中型乔木，直立或蔓生的，通常攀援，常绿或落叶的，通常具刺。

Shrubs creeping or pulvinate , dioecious , small , 10-25cm tall , spinose , profusely shortly branched .

灌木匍匐的或垫状，雌雄异株，小的，10-25厘米高，具刺，大量短分枝。