234 9^- SAXIFRAGACEAE 



3. Stamens 8 — 10. Ovary inferior or half-inferior, completely or incom- 



pletely 2 — 5-celled. Styles 2 — 5, free or united at the base. Corolla with 

 valvate aestivation. Outer flowers of the inflorescence often barren with 

 enlarged sepals. Leaves opposite. — Species i {H . Hortensia DC.) 

 Naturalized in several islands (Madeira, St. Helena, Reunion). An 

 ornamental plant. [Subfamily HYDRANGEOIDEAE.] Hydrangea L. 

 Stamens 4 — 5. Styles i — 2 4 



4. Ovary i-celled, inferior. Style simple with 2 stigmas, or styles 2. Fruit a 



berry. Leaves alternate. Flowers hermaphrodite. — Species 2. 

 North-west Africa (Algeria). One of them [R. Grossularia L., goose- 

 berry) yields edible fruit, from which also a drink is prepared. (In- 

 cluding Grossularia A. Rich.) [Subfamily RIBESOIDEAE.] Ribes L. 

 Ovary 2- — 7-celled, rarely i-celled, but then leaves opposite and flowers 

 unisexual. [Subfamily ESCALLONIOIDEAE.] 5 



5. Ovary i-celled, inferior. Ovules 8- — 10. Style simple ; stigma 2-lobed. 



Flowers unisexual. Leaves opposite. ■ — Species i. Madagascar. 



Grevea Baill. 



Ovary 2 — 7-celled. Style simple with an entire or 5 — 7-lobed stigma, or 



2-parted 6 



6. Ovary superior, 5^ — 7-celled. Style simple with a 5 — 7-lobed stigma. 



Fruit a berry or drupe 7 



Ovary inferior or half-inferior, 2 — 4-celled. Style simple with an entire 

 stigma or 2-parted. Fruit a capsule. Leaves alternate. ... 8 



7. Sepals persistent. Petals united at the base, campanulately connivent, 



rolled back at the tip. Stamens inserted between the lobes of the disc. 

 Anthers opening outwards. Ovary pyramidal. Fruit a berry. Embryo 

 shorter than the seed. CHmbing shrubs. Leaves opposite. Flowers 

 solitary or in few-flowered clusters. — Species i. Mascarene Islands. 



Roussea Smith 

 Sepals deciduous. Petals free, blunt. Stamens inserted on the margin of 

 the disc. Anthers opening inwards or laterally. Ovary ovoid. Fruit a 

 drupe with a woody, i-celled stone. Embryo as long as the seed. Low 

 trees. Leaves alternate. Flowers in umbel-shaped cymes. ■ — Species 2. 

 East Africa, Madagascar and Seychelles. The fruits arc edible. {Venana 

 Lam.) (Plate 60.) Brexia Thouars 



8. Ovary 3 — 4-celled. Style i, simple. Petals 5, united at the base. Seeds 



linear-oblong. Undershrubs. Leaves serrate. Flowers in panicles. — 



Species i. Island of Reunion Berenice Tul. 



Ovary 2-celled. Style= 2, free or united at the base (sometimes also at the 

 top, when young). Shrubs or trees 9 



9. Ovary inferior. Flowers 4-merous, unisexual. Petals imbricate in bud. 



Seeds winged, exalbuminous. Leaves entire. Male flowers panicled, 

 female sohtary. — Species i. South Africa. . . . Montinia L f. 



