无毛的

The eye of a blue macaw is surrounded by a featherless golden rim.

蓝金刚鹦鹉具有金色毛眶。

Young stems terete to frequently 4-angled or subalate, glabrous, puberulous, pubescent, or tomentose, often glabrescent.

嫩茎圆柱状到经地四棱形或略似翼，毛，被微柔毛，短柔毛，或被绒毛，通后脱落。

Stem straight, glabrous, muricate near nodes.

茎直，毛，粗糙近节。

Shrubs or small trees, usually erect, rarely viny or climbing, glabrous, rarely pubsecent, branches often inermous.

灌木或小乔木，通直立，很少倾斜或攀援，毛，很少短柔毛，枝经。