102 Lxxxiv. APOCYNACE^. (stapf). [Funtumia. 



as far as the Bakossi Mountains, ScJilechter ; plentiful in the basin of the Ngoko 

 (Goko), and Dscba CJali) Rivers, Schlechter, 12746 ! 



Soutb Central. Congo Free State : Ubangi District ; Libenge, on the River 

 Lopore, Mardulier ! North of the Congo at Ngali, Thonner, 13 ! and without precise 

 locality, Laurent, 3036 ! basin of the Upper Ituri, Arnold ! 



This is one of the most important rubber trees of Africa, concerning which much 

 information can be found in Schlechter's Westafr. Kautschuk-Expedition. Some of 

 the fruits collected by Holland at Abarogba are remarkably small. Considering the 

 difficulty of distinguishing F. elastica from F. africana and F. latifoUa in the 

 absence of flowers or fruits it may be useful to point out that the presence of 

 minute pits (acarodomitia) in the nerve axils on the underside of the leaves 

 of F. elastica and their absence in the other species is a cx)nvenient and, as it 

 seems, reliabh" character. Mr. J. H. Holland, who first called my attention to 

 it, found it very useful in the field. 



o. F. latifolia^ Stajif ex Schlechter, Westafr. Kautschuk-Exped. '2?)^. 

 A tree about 50 ft. high ; trunk straight, up to more than 3 ft. in 

 diam. ; branchlets somewhat compressed in the upper part, otherwise 

 terete, very minutely pubescent or almost glabrous, blackish when dry. 

 Leaves oblong, lanceolate-oblong or elliptic, abruptly acuminate, 

 rounded, acute or cuneate at the base, G-10 in, long, 2J-4 in, broad, 

 minutely pubescent in bud, soon quite glabrous, margins undulate ; 

 nerve-axils efoveolate; secondary nerves 10-15 on each side; veins 

 obscure ; petiole o-5 lin. long. Cymes shortly ped uncled, many- 

 flowered, dense, very minutely pubescent ; peduncle 2-o lin. long ; 

 bracts small, ovate, acute or subacute ; pedicels 1-2 lin. long. Calyx 

 IJ-li lin, long; sepals ovate, subacute, sparingly and minutely pubes- 

 cent on the back, each with two glands at the base. Corolla white, 

 more or less delicately velvety without, short, conical or subcylindric 

 and 6 lin. long in bud ; tube constricted just below the middle, 

 3-4 lin. long ; lobes oblong, obtuse, 2J-4 lin. long. Stamens inseited 

 at the middle of the corolla-tube. Disc 5-lobed ; lobes entire or crenu- 

 late, broadly rotundate, surrounding the ovary to § of its height. 

 Follicles lanceolate when closed, acute, 5-G in, long, laterally acutely 2- 

 carinate, thin, woody. Seeds 9-10 lin. long, more or less covered with 

 long and somewhat deciduous silky hairs; awn 11-12 lin. long, hairs 

 2 in. long. — Stapf in Hook. Ic. PI. sub tt. 2694-2695. Kickxia latifolia, 

 Stapf in Kew Bulletin, 1898, 307 and in De Wild. & Durand, Contrib. 

 Fl. Congo, i. 42; De Wild, & Durand, l.c, fasc, ii, 41 ; Preuss in 

 Notizbl. Konigl. Bot. Gart. Berlin, i. 353-359, fig, A-H ; Schlechter in 

 Tropenpfl. iv. 30 and Westafr. Kautschuk-Exped. 63, 64, 125 with 

 fig., 236, 307 ; Warb. Kautschukpfl. 112 and Plant, a Caoutch. 205 : De 

 Wild, in Rev, Cult. Colon, vii. 633, 634 ; De Wild, k Durand, Reliq. 

 Dewevr. in Ann. Mus. Congo, Bot. ser, iii. fasc. i. 157 ; Vilb. in Warb. 

 Plant, a Caoutch. 205, fig. 16, 207. K. Scheffleri, K. Schum. in Notizbl. 

 Konigl. Bot. Gart. Berlin, iii. 81. K. congoUina, De Wild, in Rev. Ciilt. 

 Colon, vii. 745. 



IiOTirer Guinea. Lower Congo : Kisantu, Gillet, 387 ! 



Soutb Central. Congo Free State : along the River Congo at Eangala, 

 Dewevre, 867 ! near New Antwerp, Duchesne, 14 ! and near Coqu'lbatville, Gentil ! 



