Calycine colleters mostly present, often multiseriate; corolla salveriform or rarely funnelform; corolla lobes often in-flexed in bud; aestivation almost always sinistrorse; corona mostly absent; anthers with lignified guide rails; style head with stigmatic region beneath basal collar or flange and usually with (often 5-ribbed) upper wreath or style head subglobose and without basal collar and upper wreath and body uniformly receptive; ovary apocarpous or syncarpous; disc adnate, indistinct, or free.
Galycine colleters usually absent; corolla salveriform; corolla-lobe aestivation sinistrorse; small corolline corona often present in petal sinuses (well developed and often annular in Melodinus); anther connective with a apical extension in Diplorhynchus and Dyera and with both apical connective extension and small sterile basal lobes in Pycnobotrya; style head mostly without basal collar or upper wreath; disc usually absent; ovary apocarpous or syncarpous, sometimes only at base (Diplorhynchus), more than half inferior in Dyera.
Calycine colleters absent or present; corolla salveriform or funnelform; corolla-lobe aestivation sinistrorse; corolline corona often present below the petal sinuses behind stamen (usually much dissected in Allamanda) and infrastaminal appendages generally present; anther connective often broadened and with elongate apical extension; style head mostly with basal collar or lobes (no distinct basal collar in Plumeria, Himatanthus, or Mortoniella), mostly without upper wreath (well-developed upper wreath present in Allamanda) but often with free apices conspicuously enlarged; ovary apocarpous or syncarpous at the very base (postgenitally syncarpous in Allamanda), hemiinferior in Plumeria, Himalatanthus, and Mortoniellar; disc absent or present.
Leaves opposite; calycine colleters present or absent; corolla salveriform; corona absent; corolla-lobe aestivation sinistrorse or dextrorse; style head scarcely differentiated, without basal collar, body uniformly receptive; ovary congenitally syncarpous; disc mostly absent or adnate to ovary.
Galycine colleters absent; corolla salveriform (sometimes throat somewhat expanded in Condylocarpan); corolla lobes often deeply inflexed in bud; aestivation sinistrorse; corona absent; style head with neither basal collar nor upper wreath, body uniformly receptive; ovary apocarpous or syncarpous (Lepiniopsis and Chilocarpus); in Plectaneia carpels free except for narrow, congenitally fused region in the center of their ventral flanks) and up to 5-carpellate in Lepinia and Lepiniopsis often stipitate; disc absent, indistinct, or adnate.
Style head variously shaped, epidermis sometimes radially differentiated into 5 secretory and nonsecretory zones, sometimes with collar at base and crest at the apex; stigmatic region on lower cylindrical part on underside; ovary usually apocarpous, sometimes postgenitally syncarpous; ovules mostly numerous per carpel.
Ovary apocarpous or, more rarely, syncarpous (secondarily syncarpous in Nerium).
Disc present; ovary apocarpous, postgenitally syncarpous in Beaumontia and Parepigynum, often semi-inferior.