THYMEL^AOE^. 123 



GENEKA. 



I. AQTJILAEIE^. 



1. Aquilaria Lamk. — Flowers hermaphrodite regular; more or 

 less long obconical. Sepals 5, or, more rarely 6, inserted in the 

 throat, imbricate. Stamens 10 (or rarely 12), inserted in two series 

 with the sepals, perigynous ; filaments short or very short, sometimes 

 longer subexserted or exserted ; anthers basifixed, ovate or oblong, 

 introrse, 2-rimose. Squamules equal in number to, and inserted 

 alternately with the stamens, erect exserted pilose. Germen sessile 

 to bottom of tube, free, enclosed, 2- or more rarely 3-merous ; style 

 short or subnil, sometimes longer than and rising above the stamens, 

 at apex dilated stigmatose more or less lobate ; cells in germen 2, 3, 

 more or less complete, sometimes very incomplete, 1-locular; ovule 

 in cells 1, descending ; micropyle extrorsely superior. Emit drupa- 

 ceous, finally capsular, girt at attenuate base with persistent calyx, 

 obovate or oblong or obcordate, loculicidally 3, 3-valved ; valves 

 medially septiferous. Seeds 1-3, oftener 2 ; chalaza produced to a 

 more or less spongy pilose cone j cotyledons of exalbuminous embryo 

 fleshy plano-convex ; radicle short inferior. — Trees ; leaves alternate 

 shortly petiblate exstipulate entire penninerved ; nerves close 

 parallel ; flowers terminal, lateral or axillary subumbellate. [Trop. 

 south-east. Asia, Malaya, Borneo.) See p. 102. 



2. Gyrinops GiBRTN. — Flowers nearly of Aquilaria', calyx 

 slender and long tubular, externally puberulous ; limb imbricate. 

 Stamens 5, oppositipetalous, inserted, with as many plane setulose 

 squamules, in the throat ; anthers subsessile enclosed linear, introrsely 

 2-rimose. Germen inserted at bottom of perianth somewhat 

 thickened and there furnished with unequal scarcely perceptible 

 glands, long stipitate, attenuate at base and apex; style slender 



