1875.] of the Burmese Flora. 181 



O Petals present, furnished with scales. Flowers polygamously 

 monoecious. 

 Lepisanthes. Flowers regular. Disk regularly annular. Leaves pinnate. 

 Hemigyrosa. Flowers irregular. Disk unilateral, cushion-like. Leaves pinnate. 



x x Fruit divided deeply or to the base into 3 — 2 lobes, the lobes often 

 solitary by abortion of the others. 

 Flowers irregular. Arillus none. 

 t Leaves pinnate. Trees. 

 Dittelasma. Fruit deeply 1 — 3-lobed, the lobes drupaceous, globose. Testa bony. 



Embryo curved. Disk half crescent-shaped. 

 Ebioglossum. Fruit to the base 1 — 3-lobed, the lobes oblong. Testa membranous. 

 Embryo straight. Disk unilateral. 



t t Leaves 3 — 1-foliolate. Shrubs or small trees. 

 Aelophyltjs. Flowers irregular or almost regular, with the place of the 5th petal 

 empty. Sepals orbicular. Petals with scales. Fruit-lobes fleshy or sappy. 

 Racemes simple or compound. 



Flowers regular. 



f Seeds without arillus. 

 Sapindtts. Fruit-lobes deeply or to the base separated, by 2 — 3 or often solitary by 

 abortion, the pericarp crustaceous or coriaceous, smooth. Testa crustaceous or 

 membranous. 

 Xerospermum. Fruit-lobes separated to the base, by pairs or solitary, the pericarp 

 crustaceous, tubercled. Testa fleshy and pilose within, resembling an arillus. 

 t t Seeds truly arillate. 

 "Nephelitjm. Fruit-lobes 1—3, separated to the base, the pericarp coriaceous to crusta- 

 ceous, smooth to variously tubercled, muricate, and echinate. Seeds entirely 

 enveloped by the arillus. 

 Pometia. Fruit-lobes 1 — 3, separated to the base, the pericarp corticate, smooth. Seeds 

 arillate at the lower end. Hardly different from Nephelium. 



* * Fruit a dry dehiscent capsule, the valves from woody to coriaceous and mem- 

 branous. 

 Ovules solitary in each cell. 



x Trees or shrubs. Leaves pinnate. Capsule coriaceous or woody. 

 Flowers regular. 



f Petals cucullate, or the blade shorter than the cucullate scale. 

 Scyphopetalttm. Style obsolete. Petals cucullate, without scale. 



Paraa t ephelittm. Petals broadly trigonous, smaller than the cucullate scales. Stylo 

 long. Capsule 3-valved, woody, tubercled or aculeate-muricate. Leaves pinnate, 

 the end-leaflets ternate. 



f f Petals flat or nearly so, longer than the scale if present, or 

 the petals minute or wanting altogether. 

 Cupania. Calyx cup-shaped or the sepals distinct. Capsule 3-quetrous or -lobed or 

 didymous. 



x x Twining tendril-bearing undershrubs. Leaves twice ternately 

 foliolate. Capsule bladdery-membranous, inflated. Flowers 

 irregular. 

 Cardiospermum. Sepals 4, the 2 outer ones small. Petals 4, with basal scales. Disk 

 almost reduced to 2 round or linear glands opposite the lower smaller petals. 

 Ovules by 2 or more in each cell. Trees. 



