Rutacec€. 21'^ 



XXIX.— RUTACE^. 



Trees or shrubs, sometimes scandent, often spinous ; 1. alter- 

 nate, rarely opposite, pinnate or 3-foliolate, rarely i-foliolate 

 or simple, without stip., punctate with pellucid glands ; fl. 

 regular, bisexual, rarely unisexual or polygamous ; sep. 4 or 5, 

 usually more or less connate, imbricate ; pet. 4 or 5, distinct, 

 imbricate or valvate ; stam. 4 or 5, 8 or 10, rarely 12, free, 

 distinct or rarely monadelphous ; disk large or small and 

 annular ; ov. often on a short gynophore, 2-7-, usually 4-5-, 

 celled, with 2, or rarely i, ovules in each cell (numerous in 

 Feronid) ; styles free or connate ; fruit usually an indehiscent, 

 fleshy berry, rarely of distinct, dehiscent cocci ; seeds with or 

 without endosperm. 



The genera are, as a rule, badly defined, especially in the Aurcuitiece. 



Fl. unisexual or polygamous ; seeds with endosperm. 

 Fr. of distinct dehiscent cocci {ZantJioxylecc). 



L. opposite, 3-foliolate i. Euodia. 



L. alternate, pinnate 2. Zanthoxylum. 



Yx. syncarpous, indehiscent {Toddaliecc). 



L. tri-foliolate ; stam. 5 .... 3. TODDALIA. 



L. simple ; stam. 8 4. ACRONYCHIA. 



Fl. bisexual (in Feronia polygamous); seeds with- 

 out endosperm {Aiirantica). 

 Unarmed ; 1. pinnate. 

 Ovule solitary in each ov.-cell . . .5. Glvcosmis. 

 Ovules 2 in each ov.-cell (l in Murray a 

 Koenigii). 

 Pet. valvate ; cotyledons crumpled . . 6. MlCRO.MELUM. 

 Pet. valvate or imljricate ; cotyledons plane- 

 convex ; style long . . . .7. MURRAY A. 

 Pet. imbricate ; style short . . .8. Clausena. 

 Armed with axillary spines (occasionally sup- 

 pressed). 

 Ovules I or 2 in each ov.-cell. 

 L. compound (3-7-foliolate). 



Cal. 4-5-lobed 9. Ltmonia. 



Cal. cupular not lobed . . . .10. LUVUNGA. 

 L. simple (i-foliolate). 



Climbing; disk (gynophore) conspicuous 11. Paramignya. 

 Not climbing ; disk small annular . 12. Atalantia. 



Ovules numerous in each ov.-cell . . -IS- Feronia. 



Chiefly plants of the low country, especially of the dry region, to 

 which 6 of the 1 8 species oi Aiiraiitiece are quite restricted. Zanthoxylum 

 and Liivtinga are found chiefly in the lower montane zone, and 5 other 

 species ascend into it from the low country. 



