I 



363 XXVIII. EUTACE^^i. [Mcdicoma. 



cohering by their woolly margins ; anthers oblong. Ovary slightly 4-lobe(l, 

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

 2 in each cell, collateral. Emit separating into distinct, 3-valvcd cocci; en- 

 docarp separating elastically. Seeds with a cmstaceous shining testa, albu- 

 'men 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. F, Mueller proposes to in- 

 clude it as well as Melleope (with which it agrees iu the double uumher of stamens) uader 

 Evodia, but the habit, that oi Act onychia, and the large, much-imbricate petals, appear to be 

 a sufficient distinction, unless nearly the whole of Zanthoxylea be united into one genus. 



M, Cunninghaxnii, Hook,f, 



A 



small tree, glabrous, or the young shoots and inflorescence minutely pubes- 

 cent. Leaves mostly opposite, consisting of a single leaflet obscurely articu- 

 late on a short petiole, oblong-elliptical or rarely obovate-oblong, obtuse or 

 acuminate, 3 to 6 in. long. Panicles axillary, 3-chotomous, with few large 

 flowers. Sepals orbicular, 2 to 3 lines long, with a prominent midrib. Petals 

 nearly f in. long, broadly ovate, minutely tomentose outside, with a promi- 

 nent midrib. Disk thick and glabrous. Ovary hirsute ; style slender. Cocci 

 about 3 lines long, quite distinct, scarcely coriaceous, hirsute. Seeds black. — j 

 Acronyclda Canninghamiiy Hook. Bot. Mag. t. 3994 ; F. Muell. Fragm. i, 37 ; 

 Evodia Cimninghu/jiu, F. Muell. Fragm. iii. 2, 



Queensland. Brisbane river, Moreton Bay, J, Cunningham^ F, Mueller, and others. 

 M. S. "Wales. Richmond and Clarence rivers, Beckler. 



The subsucculent eocci, originally described in our * Genera Plantaruni,' are shown by 

 subsequently received specimens to have been diseased. 



ZANTHOXYLUM 



(Blackburaiaj Forst.) 



Flowers more or less unisexual. Calyx 3-, 4- or 5-loljed. Petals 3, 4 or 

 5, imbricate or rarely valvatc or wanting* Disk small or obsolete. Stamens 

 in the males 3, 4 or 5, the ovarj^ rudimentary or conical, or of 3, 4 or 5 dis- 

 tinct^ style-like carpels. Female flowers without stamens or with scale-like 

 staminodia.^ Ovary of 1 to 5 distinct carpels. Styles nearly terminal, dis- 

 tinct or united upwards ; ovules 2 in each cai^el, usually collateral. T'ruit 

 of 1 to 5 distinct cocci, dry or drupaceous, usually 2-valved; the endocarp 

 separating or adherent. Seeds with a hard or crustaceous shining testa ; al- 

 bumen fleshy; embryo straight or curved, with broad flat cotyledons.— Shrubs 



arm 



z. Leaves 



alternate, usually pinnate. Flowers small, in axillary or terminal cymes or 

 panicles. 



Alai 

 the foil 



rge genns, dispersed over the tropical and subtropical regions of the whole world. Of 

 owing species, two are endemic in Anstrahrt, the third is also in Norfolk lisland. All 

 elong to the section Blackhurnia, characterized chiefly by solitary carpels, which arc 

 rare in the rest of the genus. 



Stems and branches prickly. Panicles axillary. Flowers 2 to 3 



lines long X. Z. hrachjacanthum. 



"Unarmed or with very few minute distant prickles. 



Leaflets very ohli4ue, coriaceous. Panicles axillary and termi- 

 nal. Flov*-er9 2 to 3 lines long . 2. Z. Blackhurnia. 



