244 XXXIV. 0LACTNEJ5. 



or immersed in the disk, 1-celled or imperfectly 2 or 3-celled; style simple; 

 stigma entire or lohed. Ovules 2, 3, or rarely 1, pendulous from a central 

 placenta into the imperfect cells, or from the side or apex of the cavity. Fruit 

 usually an indehisoent drupe, either superior or inferior by the growth over it of 

 the disk and tube of the calyx. Seed solitary, pendulous, or sometimes, owing 

 to the adnate nerve-like remains of the placenta, apparently erect ; testa very 

 thinly membranous ; embryo very small in the apex of a fleshy albumen, or 

 larger and axile ; or, in a genus not Australian, occupying the whole seed without 

 albumen ; cotyledons flat or terete ; radicle superior. — Trees, shrubs, or climbers. 

 Leaves usually alternate, entire, penninerved, without stipules. Flowers few and 

 axillary, or rarely in terminal panicles, usually small. 



The Order is widely dispersed over the tropical and subtropical regions of the globe. The 

 ten Australian genera are none of them endemic, one extending to New Zealand, four to tropical 

 Asia, three to tropical Asia and Africa, one to tropical Asia and America, and one is common to 

 Asia, Africa, and America. The Order is more nearly allied to Loranthacece among Galyciflorce, 

 and especially to SantcUacece among Monochlamydeee, than to any (except lUcineiB) of the 

 Disciform, among which it is technically placed. — Benth. 



Tkibe I. OlaiCeae. — Stamens twice as many as petals or fewer, or if the same number as petals 

 opposite to them. Ovary often 2 or 3-celled at the base, 1-celled at least at the top ; placenta 

 central, with 2 of 3 pendulous ovules. 



Oa,lyx not enlarged after flowering. Stamens twice as many as petals ; 



■ anthers oblong or linear 1. Ximenia. 



Calyx enlarged and enclosing the fruit. Stamens 3 ; staminodia (in the 



Australian species) 5 ; anthers short 2. Olax. 



Tbibe II. Opiliese. — Stamens as many as petals and opposite to them. Ovary 1-celled, with 

 1 ovule. 



Perianth apparently simple, shortly 4-lobed. Stamens 4, included, alter- 

 nating with 4 glands or scales . . . ' 3. Cansjeba. 



Calyx minute. Petals 5, free. Stamens 5, exserted, alternating with 5 

 scales 4. Opilia. 



Tbibe III. Xcacines. — Stamens as many as petals and alternate with them. Ovary 1-celled, 

 with 1 or 2 pendulous ovules. 



Eilaments glabrous or shortly pilose, thick, dilated above, hollowed in front 

 to receive the anthers. Anthers pendulous. Ovules 2. Cymes axillary 



■ or lateral 5. Gomphandra. 



Petals glabrous within. Filaments glabrous. Anthers innate, sagittate at 



the base. Ovary oblique .... 6. Apodytes. 



Petals strictly valvate. Ovule 1,' the placenta not prominent.' Flowers in 

 a much-branched corymbose panicle 7. Pennantia. 



Calyx deeply 5-parted, lobes imbricate.. Flowers unisexual. Ovary 1- 

 celled. Style acute. Albumen much-lobed 8. Phlebocalymna. 



Petals slightly imbricate. Ovules 2, the placenta forming a half-dissepi- 

 ment on one side of the cavity. Flowers in a narrow raceme-like panicle 9. Villaresia. 



Genus of doubtful affinity. Milky-juiced climber. Sepals and petals 

 imbricate. Fruit dry- winged . . . . . 10. Caedioptekis. 



1. XIMENIA, Linn. 

 (After F. Ximenes.) 

 Calyx minutely 4 or 5-toothed, not enlarged after flowering. Petals 4 or 5, 

 bearded inside, valvate in the bud. Stamens twice as many as petals, free ; 

 filaments filiform ; anthers linear, erect. Ovary 3-celled at the base ; stigma 

 capitate ; ovules 3, descending into the incomplete cells from a central placenta; 

 Drupe ovoid or globular, with a thick sarcocarp. Seed spuriously erect ; embryo 

 mmute.— Shrubs or trees, often thorny. Flowers white, rather large for the 

 Order, in small axillary cymes or solitary. 



The Australian species is spread over almost all tropical countries, the few other species are 

 American or African.— iJ»{7(. ' - r v 



