xxxiu. RUTACE^E. (J. D. Hooker.) 485 



Unarmed. Leaves pinnate. Style jointed on the top of the 



ovary, deciduous. 

 Petals valvate. Filaments linear-subulate. Cotyledons leafy, 



crumpled 13. MICROMELUM. 



Petals imbricate. Filaments linear-subulate. Cotyledons 



fleshy, plano-convex 14. MCERAYA. 



Petals imbricate. Filaments dilated below. Cotyledons 



fleshy, plano-convex 15. CLAUSENA. 



Armed (except some species of Limonia). Leaves 3-8-foliolate. 



Calyx 3-lobed. Stamens 6 16. TRIPHASIA. 



Calyx 4-5-lobed. Stamens 8 or 10 .'" , .17. LIMOXIA. 



Calyx cupular. Stamens 8 or 10 Irf. LUVUNGA. 



Unarmed or armed. Leaves 1-foliolate. 



Anthers linear-oblong. Disk elongate 19. PARAMIGXVA. 



Anthers ovate or cordate. Disk cupular 20. ATALANTIA. 



** Ovules many in each cell. 



Stamens 20-60. Ovary co-celled. Leaves 1-foliolate . . '21. CITRUS. 

 Stamens 10-12. Ovary incompletely 5-6-celled. Leaves 



pinnate T2. FEROMA. 



Stamens 30-60. Ovary 8- co -celled. Leaves 3-foliolate . 2o. ^EGLE. 



1. XIUTA, Linn. 



Strong-smelling herbs, sometimes shrubby below. Leaves alternate, 

 simple or compound. Flowers in terminal corymbs, cymes, or panicles, 

 greenish or yellow. Calyx short, 4-5-partite or -lobed, persistent. 

 Petals 4-5, concave, often toothed or ciliate, imbricate. . Stamens 8-10, 

 inserted round the base of a thick 8-10-glandular or pitted disk, the 

 alternate shorter. Ovary 3-5-lobed and -celled ; style central, basilar ; 

 ovules pendulous from the axis of the cells. Capsule 4-5-lobed, lobes 

 indehiscent, or dehiscing at the apex. Seeds angled, testa pitted, albumen, 

 fleshy ; embryo slightly curved, cotyledons sometimes 2-partite. DISTRIB. 

 About 40 species, chiefly Mediterranean and W. Asiatic. 



SUBGEN. 1. Ruta proper. Flowers 4-merous. Petals usually toothed or 

 laciniate. Filaments glabrous. Ovules many. Leaves pinnate or de- 

 compound. 



R. GKAVEOLENS, Linn.; var. angustifolia; leaves petioled triangular- 

 ovate decompound, segments various, corymbs spreading, bracts lanceolate, 

 sepals triangular acute, petals ciliate, capsule obtuse shortly pedicelled. 

 R. angustifolia, Pers. ; W. & A. Prodr. 146. R. chalepensis, Wall. 

 7113. 



Cultivated in INDIA. DISTRIB. Westward to the Canaries. 



One or more forms of the common Rue are cultivated in India, and hence introduced 

 into Botanical works. Wallich says of the plant described as R. angustifolia, Pers., by 

 W. & A., that it is from a Mr. Stevenson's garden at Tranquebar. 



SUBGEN. 2. Haploptyllum. Flowers 5-merous. Petals quite entire. 

 Filaments pilose. Ovules few or many. Leaves simple or 3-sect. 



1. R. tuberculata, Forsk. ; stem erect or ascending glabrous, branchlets 

 and inflorescence puberulous and glandular, leaves oblong linear-oblong or 

 somewhat spathulate pubescent. Boiss. Flor. Orient, i. 939. 



Boogta hills in SINDH, Vicary. DISTRIB. Westward to Egypt and Algeria. 



Stem terete, woody, branched, minutely glandular. Leaves scattered, -1 in., 



