Memecylon.'] LX. MELASTOMACE^. (C. B. Clarke.) 565 



M. PYBIFORME, Wall. Cat. 4106 is not Melastomaceous. 



M. PAUCIFLORUM, Wall. Cat. 4114 is Canthium glomeratum, Miq. 



M. ACUMINATUM, Wall. Cat. 4105 is not a Memecylon. 



M. SUBTRINERVIUM, Miq. var. grandifolia, Kurz in Journ. As. Soc. 1876, pt. ii. 

 131, from the Nicobars, with leaves 8-10 in., and obovoid-oblong berries f in. diam., 

 is perhaps next to M. heteropleurum No. 1 9, but we have seen no specimen. 



Two branchlets with detached leaves and fruits collected by Dr. T. Anderson at 

 Singapore are referred by Triana to Pachycentria ttiberculosa, Korths, a Borneo 

 species. The identification appears correct ; but this very imperfect material is the 

 only ground for supposing that the species has been collected within the limits of the 

 present Flora. 



ORDER LXI. LYTHRACEJE. (By C. B. Clarke, F.L.S.) 



Trees shrubs or herbs ; branches often quadrangular. Leaves entire, oppo- 

 site, sometimes alternate or whorled ; stipules 0. Inflorescence various, often in 

 cymes or panicles. Flowers hermaphrodite, regular, rarely oblique, unisexual in 

 Crypteronia. Calyx-tube free, persistent; lobes 3-6, valvate, accessory often 

 added. Petals as many as the calyx-teeth, rarely 0, inserted near the top of the 

 calyx-tube. Stamens definite or very many, inserted on the calyx-tube. Ovary 

 free, in the bottom of the calyx-tube (rarely inferior), 2-6-celled ; style long, 

 stigma capitate rarely 2-lobed ; ovules very many, placentas axile (rarely pa- 

 rietal). Fruit coriaceous or membranous, free or more or less adnate to the 

 base of the calyx, 2-6-celled or by imperfection of the partitions 1-celled, 

 dehiscent or not. Seeds many, various in shape, angular round or winged, 

 albumen ; embryo straight, cotyledons convolute in Sonneratia and Punica. 

 DISTBIB. Species 250 ; in the tropics of the whole world especially of America ; 

 a few species scattered over the temperate zones. 



Nessea triflora, Kunth, introduced into Wight and Arnott's Prodromtts (p. 307), 

 is a Mauritian plant collected occasionally in India. 



TRIBE I. Ammannieae. Low or aquatic herbs with small or minute 

 flowers. Calyx membranous. 



Herbs growing in moist places 1. AMMANNIA. 



Herb growing in water the flower-spike exsert 2. HYDROLYTHRUM. 



TRIBE II. Lythreae. Trees or shrubs. Calyx herbaceous or coriaceous. 

 Petals often large wrinkled. 



* Calyx curved, flowers secund. 



Stamens declinate 3. WOODFORDIA. 



** Calyx straight, flowers symmetric. 



Flowers 6-fid. Capsule circumsciss 4. PEMPHIS. 



Flowers 4-fid. Capsule irregularly breaking up 5. LAWSONIA. 



Flowers minute subunisexual. Capsule 2-valved 6. CRYPTERONIA. 



Flowers 6-fid. Capsule 3-6-valved. Seeds winged . . . . 7. LAGERSTROEMIA. 

 Flowers 4-8-fid. Capsule 4-8-valved. Seeds minute ... 8. DUABANGA. 

 Berry subglobose, 10-15-celled, o> -seeded ,9. SONNERATIA. 



Anomalous genera with inferior ovary. 



Calyx-lobes 5-7, thick. Stamens oo 10. PUNICA. 



Calyx-lobes 5, small. Stamens 10 11. AXINANDEA. 



