8 CIV. XYCTAGixE.E (baker AND avright). [Boerhaama. 



3900 ft., Brown, 89 ! British East Africa : Makindu Si Kibwezi, Powell, 4 ! 

 Kibasi, Powell, 20 ! 



Xiower Guinea. Angola : Anibriz, Monteiro ! Chella Mountains, Johnston / 

 I.oando, Gossweiler, 290 ! Vogelfontein, Baum, 38 ! German South-west Africa 

 Aniboland, Rautanen, 80 ! 314 ! 



IWozamb. Blst. German East Africa: Usambara ; Uraba Valley, Smith! 

 Usagara: Kobeho },\owu\.q\i\s, Al 00 it., Speke >.f Grant ! Portuguese East Africa : 

 l,o\ver Zambesi ; Tete, Kirk ! Lake Nyasa, Johnson, 395 ! British Central Africa : 

 Nyasiiland; Shire Valley, Waller I Upper Shire River at Fort Johnston, Scolt- 

 Elliot, 8436! Ngamiland; Lake River, Lugard, 14! Kwebe Hills, 3300 ft., Mrs. 

 Lugard, 21 ! Rechuanaland : near Palapye, 3000 ft., Lugard, 276 ! 



Also in South Africa. 



10. B, squarrosa, lleinierl in Bull. Herb. Boiss. iv, 813. Stem 

 suffruticose, white, at first finely pubescent, divaricately branched 

 upwards. Leaves petioled, ovate, ^-1 in. long, moderately thick, grey- 

 green, subentire, subglabrous, the lower obtuse, the upper subacute. 

 Umbels 3-5-flowered ; pedicels capillary, (5 lin. long. Perianth glabrous, 

 3 lin. long; upper part between campanulate and funnel-shaped ; lower 

 persistent part oblong-clavate, 3 lin. long, with 3 viscous ribs. Stamens 

 3, about as long as the perianth. 



Nile Ziand. Soinaliland, Keller. 



laO'wer Guinea. German South-west Africa : Great Xamaqualand ; Reho- 

 both. Fleck, 241a. 



3. PISONIA, Linn. ; Benth. et Hook. f. Gen. PI. iii. 9. 



Flowers polygamo-dia^cious. Male perianth funnel-shaped with short 

 spreading deltoid lobes. Stamens 5-10, exserted ; filaments unequal, 

 filiform, united at the base ; anthers globose or oblong. Female peri- 

 anth longer and narrower, swollen at the base ; stamens rudimentary ; 

 ovary sessile, elongated ; style exserted, usually lateral ; stigma bifid or 

 multifid. Fruit surrounded by the hardened clavate pentagonal peri- 

 anth, which often has a row of small spreading glandular bristles on 

 each rib ; achene similar in shape to the hardened part of the perianth 

 and nearly or quite as long. — Climbing or erect shrubs or trees, some- 

 times spiny. Leaves alternate or opposite, simple, quite entire. Flowers 

 small, greenish, in dense or lax corymbs. 



Species about 30, cosmopolitan in the tropics, chiefly American, 4 in Mauritius. 



1. P. aculeata, Linn. Sp. PI. ed. i. 1026. A climbing shrub, with 

 slender terete stems, armed with large axillary spines. Leaves petioled, 

 oblong, acute, glabrous, subcoriaceous. Male flowers in dense peduncled 

 axillary corymbs ; pedicels very short. Perianth pubescent, 1 lin. long. 

 Stamens 6-8, exserted. Female flowers in very lax panicles ; pedicels 

 at least 1 in. long. Perianth tubular-campanulate, in fruit clavate, 

 i) lin. long, armed with 5 rows of hard gland-tipped bristles. — Lam. 111. 

 t. 861; Wight, Ic. tt. 1763-4; Choisy in DC. Pro Jr. xiii. ii. 440; 



