2Ö4 8l. ANONACEAE 



Petals equal, more or less urited below, not wavy at the margin. — Species 

 15. Tropics. (Under Monodora Dim.) . . Isolona (Pierre) Engl. 



3. Petals 6, the inner greatly exceeding the outer. Carpels 4 — 6, with united 



stigmas ; ovules 6 — 10 to each. Trees with long-haired branches. 

 Flowers in panicles. — Species 5. West Africa (Cameroons). [Tribe 



MILIUSEAE.] Piptostigma Oliv. 



Petals 6, about equal in length, or the inner shorter, or petals 3 — 4. . . 4 



4. Petals thick, more or less distinctly jointed into an inferior hollow portion 



and a superior flat or thickened one, erect or connivent, rarely spreading, 

 valvate in the bud, very rarely (Anona) the inner imbricate at the apex. 



[Tribe XYLOPIEAE.] 5 



Petals thin or rather thin, rarely thick, not jointed and usually spreading, 

 but sometimes hollow or with a short claw appressed to the stamens. 10 



5. Carpels united in fruit. Ovule i. Styles oblong. Petals 3, alternate 



with the sepals, or 6. — Species 10, six of them spontaneous in tropical 

 and South-east Africa, 4 cultivated in various regions. They yield 

 cork-wood, fiVre, gum-lac, tans and dyes, poisons, medicaments, a 

 substitute for tea, and edible fruits (custard-apple, sour-sop, and others) 

 from which also drinks are prepared. (Plate 48.) [Subtribe anoninae.] 



Anona L. 

 Carpel^r free till maturity. [Subtribe xylopiinae.] 6 



6. Ovules solitary 7 



Ovules 2 or more to each carpel. Petals 6 8 



7. Petals 3, opposite the sepals. Stigmas sessile. Trees with a yellow bark 



and yellow hairs. — Species 3. Central Africa. They yield timber, 

 dyes, and medicaments. (Under Xylopia L.) . . Enantia Oliv. 

 Petals 6, the outer greatly exceeding the inner. Stigmas borne upon 

 linear styles. — Species 6. Equatorial West Africa. (Under Oxymitra 

 Blume) Stenanthera (Oliv.) Engl. & Diels 



S. Carpels containing numerous ovules or seeds, coiled spirally when ripe and 

 contracted between the seeds. Trees. — Species i. German East 



Africa Polyceratocarpus Engl. & Diels 



Carpels containing 2 — 8 ovules or i — 8 seeds, straight or slightly curved 

 when ripe 9 



9. Petals spreading, subequal. Ovules 2. Stalks of the inflorescence and the 

 flowers usually thickened and hooked. Mostly climbing or scrambhng 

 shrubs. — Species 18. Tropics to Delagoa Bay. Some have edible 



fruits or are used in medicine Artabotrys R. Br. 



Petals suberect or connivent, the inner shorter and triangular above. 

 Sepals more or less united. Receptacle usually concave. Ovules 

 2 — 8, inserted along the ventral suture. Styles long. — Species 30. 

 Tropics. Some yield timber, spices (guinea-pepper), and medicaments. 

 [Xylopicrum P. Br.) Xylopia L. 



