TROPICAL AMEEICAN RUBIACE^ 



333 



Inflorescence axillary. 

 Anthers dorsifixed. 



Stipules becoming a truncate sheath. Fruit a drupe PJiialanthiis 

 Stipules triangular, cuspidate. Fruit a bilocular 



septicidal capsule Shaferocharis 



Anthers basifixed. 



Style two-branched. Brasil plant, leaves very tough, 



shining Salzmannia 



Style simple. 

 Inflorescence lax . . . . . . . . . . Chiococca 



Inflorescence fasciculate . . . . . . . . Asemnantha 



AA. Corolla-lobes imbricate (West Indies, except Placocarpa). 



Flowers 5-merous . . . . . . . . . . . . Chione 



Flowers 4-merous. 



Stamens inserted at corolla-base ; anthers basifixed . . Scolosanthus 

 Stamens inserted in corolla-throat ; anthers dorsi- 

 fixed (Mexico) . . . . . . . . . . . . Placocarpa 



IXORE^. 



Corolla-lobes contorted ; ovule affixed at or above middle 

 of septum. 

 Flowers with calyculate calyx . . . . . . . . Cqffea 



Calyx simple . . . . . . . . . . . . . . Ixora 



Corolla-lobes imbricate ; ovule at base of loculus. 



Stamens free ; calyx ample . . . . . . . . . . Phyllomdta 



Stamens connate ; calyx small, toothed (sea-coast, Florida 



and West Indies). . .. .. .. .. .. Strumpfia. 



MORINDE^. 



Flowers confluent by their calyces ; style two-branched . . Morinda 

 Flo'vers entirely separate ; stigma capitate . . . . . . Appunia 



COUSSARE^. 



Ovules connate, borne on a common basal column. . 

 Ovules separate in a unilocular ovary, collateral, basilar 



Coussarea 

 Faramea 



PSYCHOTRIE^. 



Inflorescence many-flowered, terminal or axillary and 



terminal. 

 Inflorescence an involucrate head. 



Seed flat on ventral side ; creeping herbs . . . . Geophila 



Seed deeply furrowed on ventral side ; usually shrubs Cephaelis 

 Inflorescence without involucre. 



Fruiting carpels much laterally compressed. 



Ovule borne on a much swollen ascending funicle . . Congdonia 

 Ovule basal, with normal funicle . . . . . . Declieuxia 



Fruiting carpels semicircular in transverse section, 

 forming a pisiform fruit. 

 Seed flat on ventral side . . . . . . . . [MapouriaY 



Seed deeply furrowed on ventral side. 



Corolla-tube short, straight, not gibbous at base. 



Inflorescence not thyrsoid . . . . . . Psychotria 



Corolla-tube elongated, curved, usually gibbous on 

 one side at base. Inflorescence thyrsoid. 

 Ovary 2-5-locular . . . . . . . . Paliconrea 



Seed with inrolled ventral surface. Stipules pectinate. 



Corolla-lobes usually horned . . . . . . Rudgea 



K. Inflorescence many-, but often few-flowered, axillary, 

 cymes often closely congested. 



