132 . OXALIDB^. 



All organs abound in oil-glands, and several volatile oils occur in Citrus. The berry is 

 often eatable, and in some varieties of Citrus contains citric acid, or a bitter principle. 



1. CITEUS, L. 



Calyx 5(-3)-fid. Petals 5 (-8). Stamens polyadelpboas. Ovary many-ceUed : ovules 

 biseriate.^Leaves unifoliolaie, articulated toith the petiole. 



1*. C. medica, L. Leaves glabrous ; petiole naked or marginate; terry umtonate, 

 acid, nsuaHy bright-yellow. 



a. Berry ovoid-oblong, tubercled, slightly acid. — Desc. M. 5. t. 339. 



p. Limonum, Kiss. Berry ovoid, mgiiose, acid. — Jhiss. Fl. 3. t. 19; Desc. M. 5. 

 t. 337. 



y. Peretta, Riss. Berry obovoid, vpith the style usually persistent, slightly acid. — Tuss, 

 Fl. 8. t. 16. 



Has. Naturalized in Jamaica, and in the Caribbean Islands I ; [East Indies]. 



3. O. Aurantiuiu, L. Leaves glabrous : petiole winged; terry globose, exnmtonate. 

 0' a*. Berry large, orange-coloured, sweet: oil-glands convex.- — Tuss.Fl. 3. t. 14; Desc. 

 Fl. 5. t. 338. — C. Paradisi, Macf.: a form with larger berries. 



fi*. Bigaradia, Duh. Berry large, orange-coloured, rugulose, bitter and acid: oil-glands 

 concave.— 2k«*. Fl. 3. I. 15 ; Desc. Fl.\. t. 38 ; 5. t. 357. 



y. spinosissima, Mey. 1 Berry small (about 1" diam.), smooth, bright-yellow, very acid : 

 oil-glands concave. — Vesc. Fl. 1. 1. 7. — C. Lima, Macf. — A spiny shrub ; leaves crenate. 



Hab. a and jS, naturalized in Jamaica, and in the Caribbean Islands ; y, said to be 

 indigenous and more common : Jamaica I, Dist. ; [Cuba 1, Guadeloupe !, Mexico !, Venezuela!, 

 Guiaua !]. 



3*. C. decumana, L. Leaves puieruloas beneath, slightly dotted : petiole winged ; 

 berry large, obovoid-globose, depressed at the top, bright-yellow, or green : oil-glands flat 

 or convex. — Tuss. Fl. 3. t. 17, 18 ; Desc. Fl. 3. t. 220. — Young shoots puberulous ; berry 

 about 5" diam. — Hab. Naturalized in Jamaica and in the Caribbean Islands ! ; [Bast 

 Indies !]. 



Several other East Indian Aurantiacece have been introduced into the British West 

 Indies, and are common' in gardens, viz. Triphasia trifoliata, DC. ; Glycosmis citrifolia, 

 Lindl. {G. heterophylla, Bich. Cub.); Murraya exotica, L. ; Cookia punctata, Eetz; and 

 Citrus chinensis,ii.\s,i. (Desc. Fl, 3. t, 219). 



XLVI. GEEAJJIACE^. 



Sepals 5, mostly distinct. Stamens usually monadel^jhous, and biseriate. Pistil syn- 

 carpoua : styles adnate to the prolonged axis, at length together with the 5 monospermous 

 carpids distinct. Embryo exalbnminous, curved. — Herbs or shrubs ; leaves simple, usually 

 pahnaiifd, stipulate; nodes tumid. 



1*. GERANIUM, L. 



Stamens 10, monadelphous. Styles at length revolute. — Herbs. 



1*. G. pyrenaicum, L. Perennial; leaves palmatipartite-roundish ; petals purple, 

 bearded at the base, exceeding the mucronate sepals ; carpids smooth, pubescent : seeds 

 smooth. — Hab. Naturalized in the Blue Mountains of Jamaica!, Al., at Abbey-green; 

 [introduced from Europe], 



XLVii. oxALrDE.a:. 



Petals 5, twisted. Stamens 10, usually shortly monadelphous. Pistil syncarpous : 

 styles 5, distinct. Embryo straight: cotyledons foUaceous; albumen thin. — Leaves com- 



Acid oxalates are general in the herbage. 



