136 CXII. ARISTOLOCHIACEH (BAKER AND WRIGHT). [Aristolochia. 
1. A. bracteata, Retz. Obs. v.29. A perennial herb, glabrous in all 
its parts, Stems short, flexuous. Leaves cordate-ovate, entire, 13-2 in. 
long, with a broad basal sinus; petiole up to 9 lin. long. Flowers 
solitary, axillary ; pedicels 2 lin. long; bracts cordate, 2 lin. wide, 
persistent. Perianth dark brown; globose base 3 lin. in diam. ; tube 
7 lin. long, 1 lin. wide below, 3 lin. wide at the mouth; limb unilateral, 
lingulate, 1 in. long. Stamens and styles 6. Capsule shortly pyriform 
or subglobose, about 9 lin. long and 7 lin. wide. Seeds obcordate, flat, 
3 lin. long, 3 lin. broad at the apex.—Duch. in DC. Prodr. xv. i. 478}; 
Zarb in Cat. Spéc. Bot. Pfund, 34; Hook. f. Fl. Brit. Ind. v. 75; 
Solereder in Engl. Jahrb. x. 441. A. Kotschyi, A. Rich. Tent. Fl. Abyss. 
ii. 237; Zarb, l.c. A. abyssinica, Klotzsch in Monatsb. Akad. Berl. 
1859, 598. A. sempervirens, Forsk. Fl. Aigypt.-Arab. 156. 
Upper Guinea. Northern Nigeria: Bornu; Kuka, Vogel, 45! 
North Central. astern Chari: Snoussi, between Kourde and Tili, Chevalier 
8846 ! 
Wile Land. Nubia: Mount Uaratab, near Suakin, Schweinfurth, 972! 
Singat, Schweinfurth, 215! Abyssinia: dry beds of mountain streams near 
Tadjoura, Roth, 545! White Nile at Wod Schellai, Sehweinfurth, 922! Kordofan: 
various localities, Kotschy, 68! 121! Pfund, 138! 209! Jur: Jur Ghuattas, 
Schweinfurth, 2073! Uganda: Nile Province, Dawe, 901! British East Africa: 
east shore of Lake Rudolf, Wellby ! 
2. A. Dewevrei, De Wild. d Durand in Comptes-rendus Soc. Bot. 
Belg. xxxviii. 46. A climber. Stem sulcate. Leaves cordate, acute, 
apiculate, about 4 in. long, 14-3 in. wide, herbaceous, glabrous ; basal 
lobes separated by a wide sinus, rounded and overlapping ; lateral 
nerves one on each side, ascending, as thick as the midrib in the lower 
part, sending out branches towards the margin; veinlets densely 
reticulate, prominent beneath; petiole ?-14 in. long, decurrent. 
Cymes axillary, solitary or geminate, about half as long as the leaves, 
2-3-flowered ; flowers 6-9 lin. apart; bracts cordate, the lower 9 lin. 
long, 7 lin. wide. Perianth green below, dark brown above; utricle 
globose, 2 lin. in diam.; tube funnel-shaped, 7 lin. long, ? lin. in diam. ; 
limb unilateral, oblong, 9 lin. long, 4 lin. wide, hairy inside, 5-nerved. 
Gynostemium short; anthers 6, cells oval, prolongations of the con- 
nective widely triangular, subacute, laterally cohering, about 1 lin. long. 
Ovary long-clavate, 5 lin. long, 3 lin. wide; stigmas 6, not overtopping 
the stamens.—Il]. Fl. Congo, i. 107, t. 54. 
Lower Guinea. Lower Congo: Zambi, Dewévre. 
3. A. densivenia, Hngl. Jahrb. xxiv. 489, ¢. 10, figs. A-G. Stem 
twining, sulcate. Leaves cordate, rather obtuse, glaucous-greeD, 
densely and very minutely puberulous beneath, about 3 in. long and 
2 in. wide, basal lobes separated by a wide sinus; 2 lateral nerves 
arising at the base of the lamina, as thick as the midrib and close to it 
for a short distance, then diverging and bearing 5 thinner secon- 
dary nerves towards the margin; veinlets rather thick, very densely 
