

Plei-odiscus.] xcvu. pedaline.e (stapf). 543 



Filaments bearded at the very base only, longer 6 lin. long. Ovules 2 

 in each cell superposed. 



Mozamb Dist. British South Africa : Matabeleland, Ellioit ! 



3. P. ngamicus, X. E. Brown. Tuber obconic-cylindric, rising 

 3-3-J- in. nbove the ground, about 2 in. thick, more or less divided at 

 the top, producing numerous branches from the short thick divisions. 

 Branches 4-9 in. high, more or less glandular-mealy. Leaves densely 

 glandular-mealy, particularly belovv, oblong, sinuously pinnati-lobate, 

 obtuse or subacute, cuneate at the base, 1-2J in. long, J-l in. broad ; 

 lobes up to 6 lin. long, deltoid to linear-oblong, obtuse; petiole 5-8 lin. 

 long. Pedicels 1-4 lin. long. Calyx 1-2 J lin. long ; segments lanceo- 

 late, acute. Corolla purple with the inside of the tube yellow ; tube 

 gradually widened from the base upwards, asymmetric, straight on the 

 lower and slightly inflated at the middle on the upper side, often more 

 or less curved or twisted, sparingly hairy in the throat, 1^-1 § in. long, 

 almost I- in. wide at the mouth; limb 1-1-J- in. across. Filaments 

 hairy at the base, glabrous above or nearly so, the longer 5^ lin. long. 

 Ovule 1 in each cell. Fruit orbicular, emarginate at both ends, 1-j-l ^ 

 in. long, wings up to -J in. broad. 



Mozamb. Dist. Bechuanaland : Ngamiland ; Kwebe Hills, 3000 ft., 

 Luqard, 136A ! Lake Ngami, Chapmann ! 



A specimen collected in 1870 by Baines on his expedition to the gold-fields 

 between the Limpopo and Zambesi Rivers (very probably in Matabeleland) agrees 

 in the mode of growth exactly with P. ngamicus, but it has smaller leaves and 

 flowers, the corolla-tube scarcely exceeding 1 in. 



4. P. aurantiacus, Welw. in Trans. Linn. Soc. xxvii. 53. Tuber 

 thick, fusiform. Stem decumbent or erect, 1-1 1- ft. long, over 2 lin. 

 thick, glandular-mealy. Leaves oblong from a cuneate base, irregularly 

 repand or sinuate-dentate, obtuse, 2-2h in. long, |— 1 in. broad, densely 

 glandular-mealy below, almost glabrous above. Pedicels 1| lin. long. 

 Calyx 1 1 lin. long ; segments linear-lanceolate. Corolla intensely 

 orange coloured ; tube cylindric from an asymmetric contracted base, 

 .suddenly widened into the limb, about 8 lin. long, hairy within in 

 front, almost villous in the throat ; limb 1 \ in. across, crisped and 

 loosely hairy. Filaments hairy at the b2se only, the longer 5^ lin. 

 long. Ovule 1 or 2 ( ?) in each cell. Fruit orbicular, l\ in. long and 

 broad, cordate at the base, not emarginate at the apex, wing ^ in. 

 broad. — Engl. Jahrb. x. 255; Hiern in Cat. .Afr. PI. Welw. i. 795; 

 Aschers. in Verhandl. Bot. Ver. Brandenb. xxx. 181 ; Schinz, 

 Deutsch Siidwest Afr. 565. P. brasiliensis, Asch. ex Schinz, 1. c. 264, 

 not in Yerhandl. Bot. Ver. Brandenb. xxx. 182. 



lower Guinea. Angola: Mossamedes; banks of the Bero River, Welwitsch, 

 165S ! German South-west Africa : Hereroland, near Usakos, 3000 ft., Mar/oth, 

 1436 ! and without precise locality, Liideritz. Amboland ; Olukonda, Schinz ! 

 Dammaraland JEen ! 



5. P. kellerianus, Schinz in Bull. Herb. Boiss. iv. 453. Root- 

 stock tuberous. Leaves lanceolate, pinnatifid in the lower part, 2^ in. 



