8io 



LIX. MELASTOMACE^. 



[Memecylon. 



25. MEMECYLON, Linn. 



Shrubs or small to moderate trees. Leaves opposite ; petiole 

 short coriaceous, pinnate-nerved (rarely 3-nerved). Flowers small 

 in axillary simple or panicled cj^mes or umbels, rose or white or 

 often blue. Calyx campanulate, limb dilate, truncate or 4-toothed. 

 Petals 4. Stamens 8, equal; anthers opening in slits in front, 

 connective with a horn behind. Ovary i-celled with a depressed 

 or convex disc on the top with 8 radiating grooves; ovules 6 to 12. 

 Drupe globose or ellipsoid, pulpy, i-seeded. Species about 100, 

 Africa, tropical Asia and Australia. 



Leaves triplinerved from base .... 

 Leaves pinnate-nerved more or less conspic- 

 uously. 

 Cymes few-flowered on long slender peduncles 

 Cymes many- or few-flowered, dense short. 

 Branchlets winged or conspicuously angled. 

 Branchlets stout strongly winged ; leaves 

 coriaceous oblong lanceolate 

 Branchlets slender winged ; leaves very 



thin, lanceolate . 

 Branchlets angled ; cymes peduncled 

 I in. long .... 

 Branchlets angled ; cymes sessile ; flowers 

 3 or 4 

 Branchlets not winged nor angled. 



Leaves 6 to 8 in. long ; nerves conspicuous 

 inarching, sessile or nearly 

 so. 

 Cymes on stout peduncles . 

 Peduncles slender with terminal umbel . 

 Cymes sessile or very shortly peduncled. 

 Leaves cordate; flowers -2 in. wide . 

 Leaves cordate; flowers 'i in. wide . 

 Leaves ovate, base narrowed not 

 cordate .... 

 Leaves oblong-lanceolate, base broad 

 not cordate 

 Leaves 4 in. long or less, petiolatc. 



Nerves slender visible ; cymes pedun- 

 cled elongate compound. 

 Cymes pubescent .... 

 Cymes glabrous. 

 Nerves conspicuous .... 

 Nerves obscure ; cymes compound. 

 Leaf-base acuminate 

 Leaf-base round .... 

 Nerves invisible. 



Leaves large over 4 in. long. 



Leaves cordate amplexicaule ; 



flowers small white 

 Leaves not cordate ; flowers large 

 blue .... 



Leaves small, 2 in. long. 

 Leaves ovate sessile 

 Leaves rhomboid petioled 



(i) M. oligoneuron 



(2) M. gracilipes 



(3) M. epiphyticum 



(4) M. tenuifolium 



(5) M. fruticosum 



(6) M. dichotomum 



(7) M. caloneuron 



(8) M. Hullettii 



(9) M. Maingayi 



(10) M. Wallichii 



(11) M. heteropleurum 



(12) M. longifolium 



(13) M. pubescens 



(14) M. Eunstleri 



(15) M. olesefolium 



(16) M. laxiflorum 



(17) M. amplexicaule 



(18) M. coeruleum 



(19) M. malaccense 



(20) M. pauciflorum 



