THE FLORA OF THE NORTHEEN TERRITORY. 255 



RUBIACE^. 



Tribe I. GinchonecB. — Leaves opposite or rarely whorled, with small 

 or membranous stipules between or inside of them. Ovules several in each 

 cell of the ovary. 



Sub-tribe I. Naucleace. — Flowers very numerous, closely packed in 

 globular heads on a small receptacle. Ovules pendulous or imbricate on a 

 pendulous placenta. Fruits capsular or rarely- fleshy, not pulpy. Trees or 

 shrubs. — 3. Sarcocephalus. 



Sub-tribe II. Hedyotidece. — Flowers in cymes, clusters, or solitary. 

 Corolla-lobes valvate. Ovules attached to an axile or basal placenta. Fruit 

 capsular or separating into dry cocci. Herbs, undershrubs, or rarely shrubs. 



Flowers 4-merous. Petals entire. — 2. Oldenlandia. 



Flowers 5-merous. Petals 2- or 3-toothed. — 1. Dentella. 



Sub-tribe III. Gardeniece. — Flowers in cymes, clusters, or sohtary. 

 Corolla-lobes imbricate. Ovules attached to an axile or parietal placenta. 

 Fruit succulent, indehiscent. 



Ovary 1-celled, with 2, 3, or more prominent parietal placentas. Stipules 

 connate within the petioles. Inflorescence usually terminal. — 5. Gardenia. 



Ovary 2-celled (rarely several-ceUed), with axile placentas. Stipules 

 interpetiolar. — 4. Randia. 



Tribe II. CoffeecB. — Leaves opposite or rarely whorled, with smaU or 

 membranous stipules between or inside of them. Ovules solitary or very 

 rarely 2, collateral in each cell of the ovary, rarely several to each carpel 

 separated by spurious septa. Cells of the fruit or pyrenes always 1-seeded. 



Sub-tribe I. Ixorem. — Corolla-lobes imbricate (usually contorted). 

 Ovules laterally attached, usually peltate. Fruit a berry or drupe. Albumen 

 copious. Trees or shrubs. — 9. Ixora. 



Sub-tribe II. Ghiettardece. — CoroUa-lobes imbricate. Ovules suspended 

 from the summit of the normal or spurious cells. Fruit a drupe, the nucleus 

 or pyrenes usually hard. Albumen little or none. Trees or shrubs. Flowers 

 in forked cymes or solitary, rarely umbellate. Uniovulate spurious cells of 

 the ovary and pyrenes of the fruit much more numerous than the style-lobes, 

 superposed in several series. — 8. Timonius. 



Cells 1-ovulate, of the same number as the style-lobes. — 7. Guettarda. 



Sub-tribe III. VarigiieriecB. — Corolla-lobes valvate. Ovules laterally 

 attached at or near the top. Fruit a berry-like drupe, with 1-seeded pyrenes. 

 Albumen copious. Trees or shrubs. — 6. Canthium. 



Sub-tribe IV. Psychotrieoe. — CoroUa-lobes valvate. Ovules erect from 

 the base or laterally attached below the middle. Style-lobes short. Fruit 

 a berry-like drupe with 1-seeded pyrenes. Albumen copious. Trees or shrubs. 



Ovules and 1-seeded pyrenes 4, style-lobes 4. — 11. Ccelospermum. 



Ovules and 1-seeded p5rrenes of the same number as the style-lobes (2). — 

 10. Psychotria. 



Sub-tribe V. SpermacocecB. — CoroUa-lobes valvate. Ovules variously 

 laterally attached to the axis, the ovary usually perfectly 2-ceUed. Style- 

 lobes short. Fruit capsular, or indehiscent and dry. Albumen copious. 

 Herbs, undershrubs, or rarely shrubs. — 12. Spermacoce. 



1. DENTELLA, Forst. 

 {Lippaya, Ettdl.) 

 1. D. repens, Forst. — Islands of the Gulf of Carpentaria, R. Brown ; 

 Fitzmaurice River and Sturt's Creek, F. v. Mueller. , ,^^ 



