Flora of the Malayan Peninsula. 795 



Cymes paniculate ; drupes capsular (Tribe III. Caryopteride;e) : — 

 Leaves impariprimate ; fruit 4-celled ; calyx not enlarged 

 in fruit ; trees . . , . . . . . 11. Peeonema. 



Leaves 1- to 3-foIiolate ; fruit 2-celled ; calyx much 



enlarged in fruit ; climbers . . . . . . 12. Pete.eovitex. 



Cymes capitate ; bracts of the flower-head usually large 

 and involueriform ; large climbers (Tribe IV. SYMPHORF.MEiE) : — 

 Involucral bracts 6 ; corolla-lobes subequal ; stamens 

 included or exsert . . . . . . . . 13. Sphenodesma. 



Involucral bracts 4 ; corolla 2-lipped, the two lobes of 



the upper lip the longest ; stamens exsert . . . . 14. Congea. 



Cymes densely capitate or in short spikes, centripetal ; 

 flowers small ; calyx-segments 5, much imbricate ; trees or 

 shrubs (Tribe V. Avicennie.e) . . . . . . 15. Avicennia. 



HoLMSKioLDiA SANGUiNEA, Eetz Obs. VI. 31 (1791), is a straggling shrub of the 

 Eastern subtropical Himalaya, with a large red obconic calyx and red flowers, often 

 cultivated in gardens and occasionally found as an escape. 



Penang : on Government Hill, Curtis 2879. 



DuEANTA Plumieri, Jacq. Select. Stirp. Amer. 186, 1. 176, fig. 76 (1763), is a blue- 

 flowered shrub cultivated in gardens and sometimes found run wild in their neigh- 

 bourhood. 



Singapore : Ridley. 



Tribe I. Veebene^. 



1. L ANT AN A, Linn. 



Erect or subscandent, often rambling, pubescent or scabrous shrubs, 

 rarely herbs ; branches usually tetragonal, sometimes prickly. Leaves 

 simple, opposite or ternate, petiolate, inciso-crenate, more or less 

 rugose. Floivers in dense pedunculate spikes from the axils of the 

 leaves, variable in colour ; the spikes capitate, ovoid or cylindric ; bracts 

 conspicuous, persistent, ovate or lanceolate ; bracteoles none. Calyx 

 small, membranous, campanulate, truncate or 4- to 5-toothed. Corolla 

 hypocrateriform ; tube slender, cylindric ; lobes 4 to 5, spreading, 

 orbicular. Stamens 4 didynamous, included in the corolla-tube and 

 inserted at its middle ; anthers broadly oblong with parallel cells. 

 Ovary 2-celled ; ovule solitary in each cell, erect from the base or 

 laterally attached close to the base ; style short ; stigma oblique 

 or sublateral, thickened. Fruit a drupe w^ith more or less fleshy meso- 

 carp ; endocarp hard, separating when ripe into two 1-celled, 1-seeded 

 pyrenes. Seed exalbuminous ; testa reticulate ; radicle inferior. — 

 DisTRiB. Species about 50, tropical or subtropical, mostly American, 

 a few African or Asiatic, 



