SYNOPSIS OF THE GENUS LONICERA. 123 
AA. Leaves not ciliate, 
B. Leaves glabrous except on the midrib beneath. 
Typical form. 
L. nigra f. glabrescens, Zabel, Mitt. Deutsch. Dendr. Ges. 10:88 
(1901). 
f. Pyrenarca, Dippel, Handb. Laubholzk. 1: 229 (1889.) — 
Zabel, 1. c. 10: 89 (1901). 
This form differs from the type by smaller flowers and 
smaller leaves, dark bluish-green above. JL. nigra angusti- 
Jolia, hort. probably belongs here. 
f. virESCENS, F. Gérard, Rev. de Bot. 8: 121 (1890). 
A form with greenish fruits. — Vogesen, «‘ au Ballon de 
Soultz ’’ (Kirchleger, ex Gérard). 
BB. Leaves sparingly pubescent beneath and densely villous along 
the midrib; young branchlets, petioles and peduncles puberu- 
lous. 
f. rricHota, Beck, Fl. Nieder-Oester. 2: 1132 (1893). 
L. nigra puberula, Zabel, Mitt. Deutsch. Dendr. Ges. 10388 (1901). 
f. LATI¥FOLIA, Zabel, 7. c. 10: 89 (1901). 
Differs from the preceding form by the larger leaves, to 
3.5 cm. broad on the flowering branches, and pubescent 
even along the midrib above. 
f. GRANDIBRACTEATA, Zabel, J. c. 
An abnormal form with leafy bracts exceeding the calyx. 
AA. Leaves ciliate; bracts twice as long as the four distinct bractlets. 
var. Berolinensis, nom. nov. 
L. nigra B., Koehne, D. Dendr. 548 (1893). 
