l76 XXXII. UFTVCE.'K. 



the greatest number occur in S. Africa and Australia ; genera 82 ; species 

 about 650. 



Ovary deeply 2-5-lobecl ; fruit capsular or 3-5-coccous. 



Herbs, sometimes shrubby at the base; flowers bermaphrodite. 1. Ruta. 

 Shrubs or trees ; flowers polygamous. 



Leaves opposite 2. Evodia. 



Leaves alternate 3. Zantiioxylum. 



Ovary entire or slightly 2-5-lobed ; fruit drupaceous or baccate, 

 usually iudehiscent. 



Flowers polygamous ; seeds albuminous. 



Stamens 2-5 4. Toddama. 



Stamens 8 5. Acronyciiia. 



Flowers hermaphrodite ; seeds exalbuminous. 

 Ovules solitary or twin in each cell. 

 Unarmed. 



Style very short, persistent 6. Glycosmis. 



Style jointed on the top of the ovary, decidu- 

 ous ; leaves pinnate. 



Filaments not dilated at the base 7. Mukraya. 



Filaments dilated at the base 8. Clausena. 



Armed ; leaves 3-8-foliolate. 



Stamens 6 ; calj'x 3-lobed 9. Tripiiasia. 



Stamens 8 or 10. 



Calyx 4-5-lobed 10. Limonia. 



Calyx cupular, obscurely lobed 11. Luvunga. 



Unarmed or armed ; leaves 1-foliolate. 



Anthers linear-oblong ; disk elongate 12. Paramignya. 



Anthers ovate or cordate (except in A. mis- 



sio7iis); disk cupular 13. Atalantia. 



Ovules many in each cell. 



Stamens 20-60 ; leaves 1-foliolate 14. Citrus. 



Stamens 10-12 ; leaves pinnate 1.5. Feronia. 



Stamens 30-60 ; leaves 3-foliolate 16. -3i]gle. 



l! RUTA, Linn. 



Strong-smelling glanduloso-punctate herbs, often shrubby below. 

 Leaves alternate. Flowers numerous, in terminal corymbs, cymes or 

 panic-les, greenish or yellow, Calyx short, 4-5-lobed or -partite, per- 

 sistent. Petals 4-5, concave, often toothed or ciliate, imbricate. Disk 

 thick, urceolate, 8-10-glandular or 8-10-foveolate. Stamens S-l 0, inserted 

 round the base of the disk, the alternate shorter ; filaments dihvted at 

 the base. Ovary sessile, deeply 3-5-lobed, 3-5-celled ; ovules pendulous 

 from the axis of the cells ; style central, stigmatose at the apex. Capsule 

 4-5-lobed ; lobes iudehiscent or dehiscing at the apex, many-seeded. 

 Seeds angled ; testa pitted ; albumen fleshy ; embryo slightly curved ; 

 cotyledons sometimes 2-partite. — ])istrib. Chiefly Mediterranean, 

 Western and Central Asian ; species about 40. 



Flowers 4-merou9 ; filaments glabrous 1. It . gravcolcns. 



Flowers 5-merou8 ; filaments pilose 2. li. tuhcradata. 



1. Ruta graveolens, Linn. Sj). PI. (1753) p. 383, var. amiusti- 

 fulia, Hook. f. in iSl. B. I. v. 1, p. 485. Leaves petioled, decompound; 

 segments cuneate, spathulate-oblong or linear-oblong. Flowers in 

 divaricately spreading corymbs ; pedicels longer than the capsule ; 

 bracts lanceolate. Se])als triangular, acute. Petals obloiig-obovate, 

 pectinate, abruptly clawed. Capsules obtuse, shortly pedicelled. Seeds 

 angled, lluta r/raveolens, Grab. Cat. p. 36; Dalx. & Gibs. Suppl. 



