Small genus of densely tufted annual herbs; north temperate regions and South America and tropical Africa and Asia.
一个紧密丛生的一年生草本植物小属；产于北温带和南美及热带非洲和亚洲。
In the reclaimed farmland, the weeds dominated by perennial herbs in the initial stage of reclamation are replaced by the weeds dominated by annual herbs after reclamation for some years.
农田杂草由开垦初期以多年生草本植物占优势到开垦多年以后以一年生草本植物占优势。
Particularly last time tillage and plowed or not were significant elements that affecting the succession way in the locality(. 3)At early stage, the old-fields were often occupied by annual herbs.
最后一次耕种，特别指最后一次耕种的耕种面状况、有无翻耕是影响当地弃耕地植被演替路径的两个重要因素。（3）弃耕早期阶段弃耕地往往会被周边某种离它较近的一年生草本所占据。
Annual or perennial herbs, or tall woody bamboos.
一年生或多年生草本，或高的木质的竹子。
Old World genus of annual to perennial herbs: woad.
一个一年至多年生旧大陆草本属；菘蓝靛蓝。
Any of various succulent annual seashore herbs of the genus Cakile, of the mustard family, having pungent foliage and white to lavender flowers.
任一种十字花科的海凯菜属的肉质一年生海岸草木植物，生有刺激性的叶子，开白色到淡紫色的花。
Herbs perennial, annual, or biennial, acaulescent, rarely caulescent with ascending or decumbent shoots from a caudex.
多年生草本，一年生草本，二年生草本，无茎的或，具茎具上升或外倾嫩枝从一块根那里的很少。
Among all the colonized plants, there are 29 annual and biennial herbs, 13 perennial herbs, 4 lianas and 18 woody plants.
全部定居植物中，1 ~ 2年生草本植物29种，多年生草本植物13种，木本植物18种，藤本植物4种。
Herbs annual. Stems decumbent or erect, 30-90 cm tall, branched, angulate , with sparse retrorse prickles along angles.
一年生草本茎外倾或直立，30-90厘米高，分枝，具棱，具稀的反折的皮刺沿着棱。
Herbs annual. Roots conic or spinose.
一年生草本根圆锥形或具刺。
Herbs annual. Roots conic or spinose.
一年生草本根圆锥形或具刺。
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