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. LXVII. AQUILARINE.^. The Agallochum Tribe. 



Aquilarine^, R. Brown Cong. p. 25. (1818); Dec. Prodr. 2. 59. (1825.) 



Diagnosis. Apetalous dicotyledons, with definite suspended ovula, 

 a solitary superior 1-celled ovarium, tubular calyx, and stamina alternately 

 fertile and scale-like, arising from the throat. 



Anomalies. 



Essential Character Ca/?/.r turbinate, coriaceous, 5-lobed. Petals Q. Stamens 



monadelphous, 10 fertile, 10 sterile; the former inserted between the latter, which are 

 petaloid or scale-like ; anthers innate, 2-celled, bursting longitudinally. Ovarium superior, 

 1-celled, ovate, crowned by a sliort simple stigma ; ovules 2, parietal, suspended, with their 

 foramen in their apex, which is tapering and turned to the bottom of the cell. Capsule 

 pyriform, 2-valved, I'-celled, with the valves bearing the seed. Seeds solitary, with an 

 arillus or tail, (probably suspended, with the same form as the ovulum, and with the radicle 

 at the opposite extremity to the hilum.) — Trees. Leaves alternate, entire. 



Affinities. M. DecandoUe places this order between Chailletiaceoe, 

 but with indications of doubt, and an erroneous character ; and Mr. Brown 

 seems willing (Congo, 444.) to consider the order a section of Chaille- 

 tiacese, adding, that it would not be difficult to shew its affinity to Thy- 

 melaeiK. In this I fully concur, after an examination of a specimen of Aqui- 

 l^ria Agallochum, for which I am indebted to the East India Company; 

 in fact, Aquilarinese chiefly differ from Thymelseee in their dehiscent fruit, 

 and probably also in the direction of their radicle. In both orders the ova- 

 rium is superior and 1-celled, both have similar scale-like bodies at the 

 orifice of the calyx, and no petals, both suspended ovula, a single style, and 

 capitate stigma. 



Geography. Natives of the East Indies. 



Properties. Aloes wood, a fragrant resinous substance, of a dark 

 colour, is the inside of the trunk of the Aquilaria ovata and A. Agallochum. 

 It is considered a cordial by some Asiatic nations, and has been prescribed 

 in Europe in gout and rheumatism. Ainslie, 1. 479. 



Example. Aquilaria. 



LXVIII. OLACINE^. 



Olacine^, Mirb. Bull. Philom. n. 75. 377. (1813) ; Dec. Prodr. 1. 531. (1824.) 



Diagnosis. Polypetalous dicotyledons, with hypogynous definite sta- 

 mens, concrete carpella, an ovarium of 1 cell with a columnar placenta in 

 the axis, an imbricated calyx, unsymmetrical flowers, definite (3) pendulous 

 ovules, and bifid petals with appendages. 



Anomalies. According to DecandoUe and others, the ovarium of some 

 consists of several cells, but this is doubtful. Ximenia has entire petals, 

 but it is not certain that it belongs to the order. 



Essential Character Calyx %ma\\, entire, or slightly toothed, finally becoming, 



in many cases, enlarged. Petals definite, hypogynous, valvate in sestivation, either alto- 

 gether separate, or cohering in pairs by the intervention of stamina. Stamens definite, 

 part fertile, part sterile; the former varying in number from 3 to 10, hypogynous, usually 

 cohering with the petals, and alternate with them ; the latter opposite the petals, to which 

 they in part adhere, their upper end resembling an appendage ; filaments compressed ; 

 anthers innate, oblong, 2-celled, bursting longitudinally. Ovarium superior, 1-celled, with 

 3 ovules pendulous from the top of a central column or placenta. R. Br. Style filiform ; 



