578 RUTACEAE 



post. ; C 5 or 4 imbr. ; A 10 or 8, obdiplost. or 5, 3, 2, or oo , with 

 intr. anthers; G (5 or 4), rarely (3 i) or (oo), often free at base 

 and united above by the style (cf. Apocynaceae), multiloc. ; ov. 2 x 

 in each loc., anatr. with ventral raphe and micropyle facing upwards. 

 Fr. various ; schizocarps, drupes, berries, &c. Seeds with or without 

 endosp. 



Several R. are or have been used in medicine, chiefly on account 

 of the oils they contain, e.g. Ruta, Galipea, Toddalia, &c. Citrus 

 yields important fruits (orange, &.C.), and Chloroxylon a timber. 



Classification and chief genera (after Engler): The groups of R. 

 differ considerably among themselves, and several of them were 

 formerly regarded as independent fams. The relationships to allied 

 fains, are thus given by Engler : 



rj Meliaceae 



Zvgopnyllaceae ) T, 



X fa r J * Burseraceae 



Cneoraceae \ , c ,. , 



| Simarubaceae 



Rutaceae 



I. RUTOIDEAE. Cpls. usu. 4 5, rarely 3 i, or > 5, often 

 only united by the style, and divided when ripe; loculic. de- 

 hiscence usu. with separation of the endocarp ; rarely 4 i fleshy 

 drupes. 



i. Zanthoxyleae (woody plants, usu. with small greenish, reg., 

 often unisexual fls. ; cpl. rarely with > 2 ovules ; embryo with flat 

 cots, in endosp.) : Zanthoxylum, Fagara, Choisya. 



i. Riiteae (herbs or undershrubs, rarely shrubs, with moderate 

 sized fls., sometimes slightly -I- ; cpls. usu. with > 2 ov. ; endosp.): 

 Ruta, Dictamnus. 



3. Boronieae (undershrubs and shrubs, with reg. usu. fls.; 

 endosp. fleshy, otherwise as 2) : Boronia, Eriostemon, Correa. 



4. Diosmeae (undershrubs and shrubs, rarely trees with simple 

 1. ; exalbum., embryo usu. straight with fleshy cots.) : Calodendron, 

 Adenandra, Uiosma. 



5. Cusparieae (shrubs and trees with reg. or ] fls. ; endosp. 

 little or o; embryo curved, with radicle between the cots.) : Almeidea, 

 Galipea, Cusparia. 



6. Dictyolomeae (fls. reg., haplostemonous ; sta. with scales at 

 base; cpls. with oo ovules, only united at the base; trees with double 

 pinnate 1.) : Dictyoloma. 



II. FLINDERSIOIDEAE. Cpls. (53), each with 28 

 2-ranked erect ovules ; capsule loculic. or septic, with persistent endo- 

 carp; seed winged, exalbum. ; woody plants with lysigenous glands. 



Flindersieae: Flindersia, Chloroxylon. 



III. SPATHELIO1DEAE. Cpls. (3) each with 2 pend. ov.; 

 drupe winged ; secretory cells and lysigenous oil-glands at margins 

 of 1. 



Spathdieae: Spathelia. 



IV. TODDALIOIDEAE. Cpls. (52) or i, each with 21 

 ov. ; drupe or dry winged fr. ; endosp. or o; 1. and bark with lysi- 

 genous oil-glands. 



Toddalieae: Ptelea, Toddalia, Skimmia. 



V. AURANT10IDEAE. Berry, often with periderm, and 



