202 XXIX. BUTACEiE. 



12. MEDICOSMA, Hook. f. 



(Having the odour of lemons.) 



Sepals 4, broad, imbricate. Petals 4, broad, much imbricate in the bud, the 

 tips erect or recurved. Disk lobed. Stamens 8, filaments dilated, almost 

 cohering by their woolly margins ; anthers oblong. Ovary slightly 4-lobed, 

 4-celled. Style almost terminal, filiform, with a small 4-lobed stigma ; ovules 

 2 in each cell, collateral. Fruit separating into distinct, 2-valved cocci ; endocarp 

 separating elastically. Seeds with a crustaceous shining testa, albumen fleshy ; 

 embryo straight with broad cotyledons. — A tree. Leaves mostly opposite, 

 1-foliolate. Flowers large, in axillary panicles. 



The genus is limited to a single species endemic in Australia. P. v. Mueller proposes to 

 include it as well as Melicope (with which it agrees in the double number of stamens) under 

 Evodia, but the habit, that of Acronychia, and the large, much-imbricate petals, appear to be a 

 sufficient distirfction, unless nearly the whole of Zanthoxylece be united into one genus. — Benth. 



1. nZ. Cunninghamii (after A. Cunningham), Hook./, in Benth. and Hook. 

 Oen. PL 297 ; Benth. Fl. Austr. i. 362. A small tree, glabrous, or the young 

 shoots and inflorescence minutely pubescent. Leaves mostly opposite, consisting 

 of a single leaflet obscurely articulate on a short petiole, oblong- elliptical or 

 rarely obovate-oblong, obtuse or acuminate, 3 to Gin. long. Panicles axillary, 

 8-chotomous, with few large flowers. Sepals orbicular, 2 to 3 lines long, with a 

 prominent midrib. Petals nearly fin. long, broadly ovate, minutely tomentose 

 outside, with a prominent midrib. Disk thick and glabrous. Ovary hirsute ; 

 style slender. Cocci about 3 lines long, quite distinct, scarcely coriaceous, hirsute. 

 Seeds black. — Acronychia Cunninghamii, Hook. Bot. Mag. t. 3994 ; F. v. M. 

 Fragm. i. 27 ; Evodia Cunninghamii, F. v. M. Fragm. iii. 2. 



Hab.: Brisbane River, Moretou Bay, A. Cunningham ; common in the southern scrubs. 



The subsucoulent cocci, originally described in our " Genera Plantarum," are shown by 

 subsequently received specimens to have been diseased. — Benth. 



Wood of a light-yellow colour, close in the grain. A good cabinetmaker's wood. — Bailey's 

 Gat. Ql. Woods No. 43. 



13. BROMBYA, F. v. M. 



(After Eev. Dr. J. E. Bromby.) 



Calyx 4-lobed. Petals 4, deltoid or ovate-cordate, sessile, valvate. Disk 

 quadrisinuate. Stamens 8 ; filaments almost ovate, those opposite the petals 

 sterile with very small anthers, those opposite sepals fertile, the point subulate. 

 Anthers introrse, 2-celled, dehiscing longitudinally. Style short. Stigma minute, 

 4-lobed. Ovary of 4 carpels, coherent inside. Ovules 2, superposed.^-F. v. M. 

 Fragm. v. 4. , 



1. B. platynema (broad filaments), F. v. M. Fragm. v. 4 and 66. A 

 glabrous shrub or tree. Leaves simple, opposite, ovate, shortly acuminate, 2 to 

 4^in. long, IJ to 2in. broad, base cuneate to a petiole of J to lin. long. Panicles 

 about as long as the leaves, the branches divergent. Pedicels about 1 line long. 

 Calyx lobes deltoid, scarcely J line long. Petals white, about 1 line. Filaments 

 ciliate, sterile ones spathulate-ovate, fertile ones acute, ovate. Fertile anthers 

 cordate. Disk and style glabrous. Cocci 4, alrhost ovate, 2 lines long, 2-valved, 

 1 (rarely 2) seeded. Seeds almost oval, black, 1 line long. 



Hab.: Ranges about Rockingham Bay, J. Dallachy (F. v. M., I.e.) 



