The case of the Anthyllis will make a "tie" with the believed case of Pyrenees plants becoming glabrous at low levels.
"The Life and Letters of Charles Darwin, Volume I (of II)" by Charles Darwin
The whole tree is quite glabrous except the petioles, which are clothed with a dense pubescence.
"Hardy Ornamental Flowering Trees and Shrubs" by A. D. Webster
Fronds bright green, pinnae glabrous, oblong.
"The Fern Lover's Companion" by George Henry Tilton
Midrib of leaflets glabrous or nearly so, sometimes with scattered, sessile glands.
"Northern Nut Growers Association Thirty-Fourth Annual Report 1943" by Various
Glabrous node; 2. bearded node; 3. node cut longitudinally.
"A Handbook of Some South Indian Grasses" by Rai Bahadur K. Ranga Achariyar
Spring-shoots glabrous or pubescent.
"The Genus Pinus" by George Russell Shaw
Pileus fleshy, convex, then depressed, at first glabrous, then scaly, honey-colored, varying to pallid-brown or reddish.
"The Mushroom, Edible and Otherwise" by M. E. Hard
Shoots may be glabrous, pubescent or hairy and even spiny.
"Manual of American Grape-Growing" by U. P. Hedrick
Leaf-buds pointed, glabrous and somewhat glutinous.
"Trees of the Northern United States" by Austin C. Apgar
The genitals are frequently atrophied, the skin glabrous, and gynecomastia not uncommon.
"Criminal Man" by Gina Lombroso-Ferrero