484 xxxin. RUTACE^:. (J. D. Hooker.) 



ORDER XXXIII. RUTACE-ffi. (By J. D. Hooker.) 



Trees or shrubs, rarely herbs, abounding in pellucid glands filled with 

 essential oil (except rj<uturn). L<>ai'>* opposite or alternate, simple or 

 compound, exstipulate. Flowers in axillary or terminal cymes or panicles, 

 (racemed in Dwtinnnn*}, never spiked, usually bisexual and regular in the 

 Indian species (except iJictamnus). C<dt/,>' of 4-5 small lobes or sepals. 

 Petals 4-5, hypogynous (in the Indian genera), valvate or imbricate, Stamen* 

 4-5 or 8 or 10, rarely more (('tints, -/>//'', or ( > (Senwingkaiuenia\ fila- 

 ments usually free, hypogynous ; anthers ^-celled, opening inwards. /;/./ 

 within the stamens, crenate or lobed, sometimes large or long. Ovari/ of 4-5 

 free or connate carpels; styles as many, free or variously united, stigmas 

 terminal, entire or lobed; ovules usually 2 in each cell. Fruits, c;ij 

 berry or drupe, or of 1-4 capsular cocci. ,SV^/.s- usually solitary in the 

 cells, testa various, albumen fleshy or ; embryo straight or curved, radicle 

 superior. DISTRIB. Tropical and extratropical plants; many are fc>. African 

 and Australian. Genera Ki, and about i!5n species. 



TBIBE I. Ruteae. Herbs; rarely shrubby. /'V^vrx hermaphrodite. 

 7> /.*/ thick. Ovary deeply 3-5-lobed ; styles basilar or ventral, free or 

 united; cells 3- or more ovuled. Fruit capsular. AUnmu-.ti tleshy ; embryo 

 usually curved. 



* Flowers regular. 



Petals 4-5. Stamens 8-10. Ovary sessile ...... 1. !' 



Petals 4. Stamens 0-8. Ovary pedieelled ...... 



Petals 4 5. Stamens 12-15 ........... 



Flowers 



4. J)i< TA.MM>. 



TRIBE II. Zanthoxyleee. Shrubs or trees. FJwrrs usually p 

 mous. JJ-iitk free, rarely 0. Owrii <lee]ily 2-5-lobed ; styles basilar or 

 ventral, more or less free; cells 2-ovuled. Fruit ipsular. 



Leayet opposite. Stamens 4-5 ......... 5. KVODIA. 



l.i-avi-s ojipD.siti-. Stanu-ns 4, with 4 .staniiuiMl.'s <>[<>, 



the petals ................ 6. '|'I:TK \( TOMIA. 



Leaves opposite. Snuncns 8 .......... 7. M KI.ICOI-K. 



Leaves alternate. Stamens 3-5 ......... 8. /.\M-IK>\\ U-M. 



TKIBE III. Toddalieae. Shrubs or trees. F/<<u"rs usually polygamous. 

 free. Omnj entire ; style single ; cells 1-^-ovuled. Fruit syncarpotis. 

 tieed albuminous ; cotyledons usually fiat. 



Stem usually prickly. Leaves compound. Petals and 



stamens 2-5 eaeh ............. 9. TODDAI.IA. 



Stem unarnit <1. Leaves 1-3-foliolate. Petals 4. Siann-ns s 10. .\> IMN^ 

 Stem unarmed. Leaves simple. Petals and stamens 1 5 each 11. SKIMMIA. 



TKIBE IV. Aurantieae. Shrubs or trees. Flowers hermaphrodite. Pct'^n 

 and sttnnms free or connate. Ovary entire ; style simple; cells l-oo -ovuled. 

 Berry usually pulpy. Seed exalbuminous. 



* Ovules solitary or twin in each cell. 



Style very shcjt, persistent . .' ......... 12. GLYCOSMIS. 



