242 103- ROSACEAE 



Filaments broadened at the base. Sepals valvate in bud. Carpels usuallj' 

 inserted on an elevated receptacle. [Tribe POTENTILLEAE]. . 22 



22. Carpels with 2 o\ailes each, drupe-like when ripe. Style subterminal. 



Epicalyx none. — Species 30. Many of them yield edible fruits, from 

 which also drinks are prepared ; some are used as ornamental plants, 

 for tanning, and in medicine. " Bramble." [Subtribe rubixae.] 



Rubus L. 



Carpels with i o\njle each, nut-like when ripe. Epicalyx nearly always 



present • 23 



23. Ovule ascending. Style persistent, terminal. Herbs. Radical leaves 



pinnatisect. — Species 4. North and South Africa ; one species also 



naturalized in St. Helena. They jaeld tanning and dyeing materials and 



medicaments. " Avens." [Subtribe dryadinak.] . . , Geum L. 



0\'ule pendulous. Style deciduous. [Subtribe potentillinae.] . 24 



24. Ripe carpels on a greatly enlarged, coloured, and succulent receptacle. 



Petals white. Herbs. Leaves usually trifoliolate. — Species 5. Culti- 

 vated in various regions ; one species also growling wild in the Azores, 

 Madeira, and the Canary Islands. They yield edible fruits (strawberries), 

 dyeing and tanning materials, and medicaments . . . Fragaria L. 

 Ripe carpels on a slightly or not enlarged, not coloured, dry (sometimes 

 spongy, but not succulent) receptacle. Flowers hermaphrodite. — 

 Species 10. Some of them yield tanning and dyeing materials, or serve 

 for the preparation of ink and medicaments, or as ornamental plants. 



Potentilla L. 



25. (10.) Style terminal or nearly so. Ovules pendulous. Flowers regular. 



[Subfamily PRUNOIDEAE.] 26 



Style basal. Ovules erect. [Subfamily CHRYSOBALANOIDEAE.] . 27 



26. Petals sepaloid. Flowers in racemes. — Species i. Central and South-east 



Africa Pygeum Gaertn. 



Petals petaloid. — Species 9 ; six of them spontaneous in North Africa, 

 the others, as well as the former, cultivated in various regions. They 

 yield timber, tanners' bark, gum, oil, medicaments, and edible fruits 

 (plums, cherries, apricots, peaches, almonds), from which also drinks and 

 confectionery are prepared. Several species are used as ornamental 

 plants. (Including Amygdalus L., Armeniaca Juss., Cerastis Juss., and 



Persica Tourn.) Prunus L. 



7. Flowers almost regular. Stamens 10 or more. Carpel inserted at or 

 near the base of the bell- or funnel-shaped receptacle. [Subtribe 



CHRYSOBALANINAE.] 28 



Flowers distinctly irregular. Fertile stamens 3 — 20, all on one side of the 

 flower. Carpel inserted at or near the upper margin of the more or less 

 tubular receptacle. [Subtribe hirtellinae.] 2g 



Receptacle swelling on one side ; carpel slightly excentrical. Stamens 

 10 — 15. Fruit with a 3-angled stone. Flowers in racemes. — Species 2. 

 Madagascar and Mascarenes. Used medicinally . . Grange ria Comm. 



'T 



