Mitragyne. | LXX. RUBIACE® (HIERN). 41 
Senegambia, Bacle, Perrottet ; Niger, Ansell!, Th. Vogel! ; Nupe, Barter! ; Gambia, 
Dr. Mackenzie Skues ! 
Nile Land. By Gazelle River, Schweinfurth ! 
Grows in moist places. The wood is used for carving. 
2. M. macrophylla, Hiern. A tree from 20 ft. upwards to 
50 ft., sometimes of vast size with very stiff trunk, shining, nearly 
glabrous or somewhat hispid. Leaves elliptical, often broadly so, 
thinly coriaceous or papery, rounded or sometimes shortly acuminate at 
apex, obtuse or rounded or sometimes wedge-shaped at base, with 8-10 
veins on each side of the midrib, 3-21 by 2-15 in.; petiole 1-21 in. ; 
stipules obovate, 1} in. Flowering heads 4-3 in. diam., cymose, 
often umbellate. Calyx with shallow lobes, ciliate (quite entire 
according to De Uandolle). Corolla }-} in. long, greenish white, 
fragrant ; limb shortly pale-pilose-tomentose outside ; throat glabrous ; 
lobes with filiform fragile tips. Anthers included, erect. Fruiting 
heads 4-1 in. diam. — Nauclea stipulosa, DC. Prodr. iv. p. 346. 
N. macrophylla, Perr. et Lepr., non Roxb. nec Blum., ex DC. 1. ¢. 
N. stipulacea, G. Don Gen. Syst. iii. p. 469. N. bracteosa, Welw. 
Synops. Explicat. p. 48, n. 180 (1862). Stephegyne, sp., sub. nom. 
specif. stipulata, Benth. et Hook. f. Gen. PI. ii. p. 31. 
Upper Guinea. Gambia, Lepricur ; Sierra Leone, Afzelius!; River Nun, 1° 
-lat., Mann! ; Niger. Barter !; Fernando Po, Th. Vogel! ; Quorra, Barter !. 
Nile Land. Niamniam-land, Schweinfurth ! Djur-land, Schweinfurth ! 
Lower Guinea. Golungo Alto, Welwitsch ! 
4. UNCARIA, Schreb.; Benth. et Hook. f. Gen. Pl. ii. p. 31. 
. Flowers crowded in rather loose globose heads, usually pedicelled, 
without intervening bracteoles. Calyx-tubes not cohering, at length 
siform ; limb campanulate, 5-lobed. Corolla funnel-shaped with an 
Ongated tube, valvate in estivation. Stamens 5, inserted at the 
roat of the corolla; filaments short ; anthers shortly oblong, cells 
More or less produced, or in some species setose at the base. Disk 
mconspicuous, Ovary fusiform, 2-celled; style exserted; stigma 
clavate or capitate ; ovules numerous, ascending. Capsule septicidal, 
any seeded ; testa produced at both ends into capillary appendages. 
Climbing shrubs with opposite, interpetiolar fugacious stipules, and 
Ower peduncles usually transformed into recurved spines. 
A genus of several species including, besides the following, one from Guiana and 
Several from Tropical Asia. 
l. U. africana, G. Don, Gen. Syst. iii. p. 471, n. 18. A glabrous 
;” Sparingly pubescent shrub 4-40 ft. high. Leaves ovate-oval or 
neeolate, acuminate, rounded at the base or nearly so, thinly 
roraceous, with 5-7 lateral veins on each side of the midrib, shortly 
petiolate, 2-6 by 1-4 in. ; stipules }-3 in. long, usually bipartite with 
7atrow partitions. Spines at first nearly straight, afterwards crooked. 
ering heads 14-2 in. diam. Calyx tawny, as well as the corolla 
Stlee and appressedly pilose-tomentose ; limb shortly lobed. Corolla 
. ut 3 in. long, greenish yellow. Stamens glabrous; anther-cells 
eMtusely produced at base. Fruiting heads 3-3} in. diam. ; pedicels 
el 
