179- COMBRETACIiAE — l8o. MYRTACEAE 391 



Fruits not crowded in a cone ; pericarp fleshy or leathery outside, bony 

 within. Flowers in usually long, often panicled spikes. Funicle smooth. 

 Leaves usually crowded at the ends of the branches. — Species 80; 

 Tropical and South Africa. Some species yield timber, resin used for 

 fumigating, tanning and dyeing materials, food for silk-worms, edible 

 oily seeds, and medicaments ; others arc used as ornamental plants. 



Terminalia L.. 



FAMILY 180. MYRTACEAE 



Trees or shrubs. Leaves undivided, gland-dotted, without stipules. Flowers 

 regular, 4 — 5-merous. Calyx with imbricate, open, or closed aestivation. 

 Petals free and imbricate in bud, or united into a hood. Stamens usually 

 numerous. Anthers opening by longitudinal slits. Ovary usually inferior or 

 half-inferior, 2 — 5-celled, the cells sometimes incomplete at the top. Ovules 

 inverted. Style simple ; stigma entire, rarely {Psiloxylon) 3 — 4-parted. 

 Seeds exalbuminous. — Genera 10, species 85. (Plate 114.) 



1. Fruit a capsule or a nut. Embr^-o straight, with large cotyledons. Trees. 



[Subfamily LEPTOSPERMOIDEAE, tribe LEPTOSPERMEAE.] . 2 



Fruit a berry. Ovary inferior or half-inferior. Stamens numerous. 



Leaves opposite. [Subfamily MYRTOIDEAE, tribe MY RTEAE.] . 5. 



2. Calyx entire or nearly so. Petals united into a hood falling off as a whole. 



Stamens numerous. Ovary inferior. Leaves of older trees mostly 

 alternate. — vSpecies 3. Cultivated and naturalized in various regions. 

 They yield timber, bark for tanning, an astringent resin (kino), 

 and an ethereal oil used in perfumery and medicine. [Subtribe 



EucALYPTiNAE.l Eucalyptus L'Hcr. 



Calyx with 5 lobes. Petals 5, free 3 



3. Stamens numerous. Ovary inferior or half-inferior. Leaves opposite. — 



Species i. South Africa. [Tribe METROSIDERINAE. ; 



Metrosideros Banks 

 Stamens 5 — to. Ovary superior. Leaves alternate. 4 



4. Stamens 5 — 8. Stigma i, entire. Flowers in terminal panick-s. — Species 



2. South Africa Heteropyxis Harv. 



Stamens 10. Stigmas 3 — 4. Flowers in axillary clusters. ' — Species i. 

 Mascarene Islands. Yields timber. {Fropicra Hook, fil.) 



Psiloxylon Thouars 



5. Embryo with a short radicle and large, fleshy cotyledons. Flowers usually 



4-merous. Sepals separate or indistinct. Ovary 2-, rarelv 3-celled. 



[Subtribe eugeniinae.] 6 



Embryo with a long, curved radicle and shorter or somewhat longer 

 cotyledons. Flowers usually 5-merous. Petals free. [Subtribe 



MYRTINAE.] . 8 



6. Ovary in the centre of the receptacle. Calyx-tube contrasting distinctly 



with the pedicel, not or slightly prolonged above the ovary. Petals 



