無(wú)支鏈的

Stems erect, usually unbranched. 莖直立，通常不分枝。

Stems erect, branched basally or unbranched. 莖直立，分枝或。

Stems erect or ascending, unbranched. 莖直立或上升，不分枝。

Stems unbranched or sometimes branched. 莖不分枝或者有時(shí)分枝。

Stems branched apically or unbranched. 頂部的莖分枝或者不分枝。