Tomentose
Encyclopedia
Tomentose is a term used to describe plant hairs that are flattened and matted, forming a woolly coating known as tomentum
Tomentum
Tomentum may refer to the following:*In botany, a covering of closely matted or fine hairs on plant leaves. *A network of minute blood vessels in the brain.* Tomentum in zoology are a short, soft pubescence...

. Often the hairs are silver or gray-colored. Many species of plants that have this type of structure have been named for it, including Achillea tomentosa, Aristolochia tomentosa
Aristolochia tomentosa
Aristolochia tomentosa is a species of flowering plant in the Aristolochiaceae family.-References:*C. Neinhuis, S. Wanke1, K. W. Hilu, K. Müller and T. Borsch, . Phylogeny of Aristolochiaceae based on parsimony, likelihood, and Bayesian analyses of trnL-trnF sequences. Plant Systematics and...

, Opuntia tomentosa, Paulownia tomentosa
Paulownia tomentosa
Paulownia tomentosa is a deciduous tree in the genus Paulownia, native to central and western China, but invasive in the US...

, Rhodomyrtus tomentosa
Rhodomyrtus tomentosa
Rhodomyrtus tomentosa is a flowering plant in the family Myrtaceae, native to southern and southeastern Asia, from India, east to southern China, Taiwan and the Philippines, and south to Malaysia and Sulawesi...

, and Uncaria tomentosa
Uncaria tomentosa
Uncaria tomentosa is a woody vine found in the tropical jungles of South and Central America, which derives its name from its claw-shaped thorns...

. Where the tomentum is minute or only slight, the coating is described as 'tomentulose'.
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