1.【植】绒毛;【动】棉毛;【解】软脑膜的毛状膜裹
1.a downy covering of tiny hairs on leaves and other plant parts
1.young shoots with a dense grayish tomentum and a few glandular hairs.
幼枝具一紧密的浅灰色的绒毛层和一些腺毛。
2.large tree native to eastern Europe and Asia Minor having leaves with white tomentum on the under side; widely cultivated as an ornamental.
原产于欧洲东部和小亚细亚的一种高大树，其叶子下面被白色绒毛；
3.Corolla yellowish, cream or pinkish, without tomentum; calyx, ovary, and style glandular-hairy only.
花冠淡黄，米色或者带粉红色，没有绒毛层；仅花萼，子房和花柱腺毛。
4.Peduncles with sparse arachnoid tomentum when young, then gradually falling off.
幼时的花序梗具具稀疏蛛丝状毛，然后逐渐从上落下。
5.Stipules glabrous or with arachnoid tomentum. Pedicel and calyx glabrous.
托叶无毛或有蛛丝状绒毛的。
6.34 (33) Inflorescence axis pilose and with arachnoid tomentum.
花序轴具柔毛和具蛛丝状绒毛。
7.rachis stout, ca. 20 mm, with dense fawn or ferruginous tomentum.
坚固的轴，大约20毫米，具紧密的淡黄褐色或者铁锈色的绒毛层。
8.abaxial surface setose and sparsely tomentose, tomentum quickly lost at least towards apex, or persistent, midrib densely glandular-setose;
先端锐尖或渐尖背面具刚毛和向先端，宿存的或至少稀疏绒毛，绒毛层迅速丢失，密被具腺具刚毛；
9.Branchlets terete, with conspicuous longitudinal ridges, with dense, white or brown arachnoid tomentum and purple bristles;
小枝圆柱状，带有显眼的纵脊，具紧密的，白色或者棕色的蛛丝状绒毛和紫色的硬毛；
10.Branchlets terete, with longitudinal ridges, sparsely pubescent with arachnoid tomentum;
小枝圆柱状，带有纵脊，有蛛丝状绒毛的疏生短柔毛；