140 LEGUMINOSAE. 
GyMNocLAbus. Coffee Tree. 
(Family Leguminosae). 
Large rough-barked tree: de- 
ciduous. Twigs stout, terete or 
irregularly 3-sided above: pith 
large, round, continuous, salmon- 
colored. Buds superposed in raised 
silky craters, indistinctly scaly, 
the end-bud lacking. lLeaf-scars 
alternate, large, irregularly heart- 
shaped, little elevated: bundle- 
traces 3 or 5, large, rather indefi- 
nite and divided: stipule-scars 
minute and fringed at top, or 
lacking. 
Winter-character references:— 
Blakeslee & Jarvis, 333, 514, pl.; 
Brendel, 28, pl. 3; Hitchcock (1), 
4,.£.,.11, @ad, 24. 04). en ie 4a- 
45; Otis, 162; Schneider, f. 13, 33, 
72, 189. 
Like the ailanthus, Gymnocla- 
dus presents unmistakable  evi- 
dence of the absence of a true terminal bud on its stout 
twigs. Von Mohl has published on this abscission in the 
Botanische Zeitung of 1848 and 1860, and it is figured by 
Foerste in volume 20 of the Botanical Gazette. The large 
leaf-scars afford a particularly good opportunity for observing 
the progressive obliteration of self-healed wounds, and the 
changes in the leaf-scars in successive years were described 
by von Mohl in the Botanische Zeitung for 1849. The mechan- 
ism of leaf-fall is described by van Tieghem and Guignard 
in the Bulletin de la Société Botanique de France for 1882. 
Twigs with whitening epidermis and fine lenticels. G. dioica. 
