"a SOUTH NIGERIAN PLANTS 
when dry, somewhat paler and not at all shining on the underside ; 
lateral pair of nerves arising from the midrib at from less than 1 cm. 
to nearly 2 em. from the base of the leaf, each nerve traversing about 
one-half of the leaf in an arch of no great curvature which never 
approaches the leaf-margin, and at length anastomoses with the 
lowest of the three other lateral nerves; the nerves are flat above and 
prominent below; petioles about 12 mm. long, channelled above, 
stout. Tendril-bearing branch 9 cm. long, with two pairs of tendrils 
6 cm. apart; tendrils woody, 4:5-6 cm. long, much curved and 
swollen in the upper part. Cymes + 6 cm. long, 8-4 em. in diameter. 
Peduncles 2 cm. long; central flower of each cymule usually sessile 
or subsessile, lateral flowers on pedicels up to 8 mm. in length. 
Bracts 1:5-2mm.long. Calyz92:5mm.long. Corolla palest yellow, 
tube quite glabrous inside, 5 mm. long, 3-8:5 mm. broad; lobes 
6 mm. long, like the tube somewhat fleshy. “ Corona." 2:5 mm. long, 
its lobes about "5 mm. long. Filaments 1 mm., anthers 2 mm. long. 
Ovary 3 mm. long, style 4 mm. 
The genus has all the characters of Strychnos, with the addition 
of the so-called ** corona." 
CONVOLVULACEE by Dr. A. B. Rendle. 
The collection includes thirty-four species, sixteen of which 
belong to the genus Ipomoea. The majority are more or less 
widely spread in Tropical Africa or tropical countries generally. 
Eight are restricted to West Tropical Africa, including Lepi- 
 &temon parviflorus Pilger and Ipomoea Hierniana Rendle, previously 
known only from the Cameroons, I. velutipes Welw. from S. 
Cameroons and Angola, and I. micrantha Hallier f. from the 
Cameroons and. Ashanti. : 
Prevostea nigeriea Rendle sp. nov. Planta scandens caule 
tenui; foliis ... ; floribus apice et sub apice pedunculorum 
axillarium aggregatis ; bracteis minutis lineari-oblongis vel 
-oblanceolatis dorso ferrugine hirsutulis; sepalis 2 exterioribus 
ovato-cordatis obtusis veluti pedicello tenui dorso praecipue 
superne ferrugine hirsutulis, sepalis interioribus parvis late ovatis 
acutis; corolla urceolata alba parva segmentis brevibus rotundatis 
demum recurvis sub ore ferrugine pubescente ; antheris ante 
anthesin reversis ; stylo paene ad basin diviso, brachiis inaequali- 
bus stigmatibus late ellipsoideis ; fructu indehiscente ovoideo styli 
basi persistente coronato monospermo, sepalis accrescentibus 
rotunde ovatis vel suborbicularibus cordatis. 
Oban ; n. 1484. 
Said to be leafless in the flowering and fruiting stage. Peduncles 
apparently short, stiff, bearing a large number of crowded flowers; 
pedicels 6-7 mm. long. Outer sepals 5-8 mm. long, the outermost in 
the fruiting stage to 4'5 cm. long and as broad, the inner about 
2-5 cm. Corolla 1*4 em. long by 8 mm. in diameter ; segments 1 mm. 
long. Fruit (unripe) about 1 cm. long without the beak. 
