TO ORDER 31. RUTACE^E. 



apex ; caps, often 1 -celled by the obliteration t f the dissepiments, 5-vaiveo, 

 bursting elastically. Sts. smooth, succulent, tender, subpellucid, with tu- 

 mid joints. Lvs. simple, alternate, serrate. Figs. 27, 28, 315. 



1 I. palllda Nutt. Lvs. oblong-ovate ; ped. 2-4-flowered, elongated ; lower gibbous 



sepals dilated-conical, broader than long, with a very short, recurved spur ; fls. pale 

 yellow, sparingly dotted. (T) Wet shades. 3 4f. Aug. 



2 I. fulva Nutt. Lvs. rhombic ovate ; ped. 2^-flowered, short ; lower gibbous sepal 



acutely conical, longer than broad, with an elongated, closely reflexed spur ; fls. deep 

 orange, spotted. (D Damp grounds. 2 3f. July. 



8 1. BALSAMINA L. Bolsdmine. Lvs. lanceolate, serrate, upper ones alternate; ped. 

 clustered ; spur shorter than the flower. (T) E. India. Fls. large, white and red. 



ORDER XXXI. RUTACE^E. RUEWORTS. 



Herbs or generally shrubs or trees, with the exstipulate leaves dotted with 

 transparent glands containing aromatic or acrid oil. Flowers regular, 3-5- 

 merous, lypogynous, perfect or polygamous. Stamens as many or twice as 

 many as the sepals. Pistils 2 5, separate or united, styles united. Fruii 

 capsular or separating into its component, 1-2-seeded carpels. 



$ RUTEjE. Flowers perfect. (Herbs. Stamens 10.).. (a) 



a Petals equal, concave. Capsule 6-lobed ................ RCTA. 1 



a Petals unequal, eluwed. Capsules separable ............ DICTAMXCS. 2 



I ZANTHOXYLE.fi. Flowers 8 t- (Trees, shrubs).. (6) 



6 Pistils 36, separate below. Stamens 36 ........ ZANTHOXYLUM. 3 



6 Pistils 2, united. Samara 2-seeded ................ PTELKA. 4 



1. RUT A, L. RUE. Calyx of 4 or 5 sepals, united at base. Petals 4 or 

 5, concave, obovate, distinct, torus surrounded by 10 nectariferous pores. 

 Stamens 10. Capsule lobed. y 5 , mostly European. 



R. GRAVEOLENS L. Common Rue. Suffruticous, nearly glabrous ; leaves 2 3 pinnately 

 divided, segm. oblong, obtuse, terminal ones obovate-cuneate, all entire or irregularly 

 cleft ; fls. terminal, corymbous ; pet. entire. 3f. Greenish. 



2. DICTAMNUS, L. FRAXINELLA. Calyx of 5, deciduous sepals ; 

 petals 5, unguiculate, unequal ; filaments 10, declinate, with glandular 

 dots ; capsules 5, slightly united. U Native of Germany. 



O. ILEUS Willd. St. simple ; Ivs. pinnate, the rachis more or less winged ; fla. in a large, 

 terminal, erect panicle. In gardens. 1 2f. Fls. ehowy. 

 ft. KUBRA. Fls. purple ; rachis of the leaves winged. 



3. ZANTHOXYLUM, L. PRICKLY ASH. (ar3o?, yellow, 

 wood.) Sepals 4 or 5, rarely obsolete. Petals 4 or 5. Sta. as many as the 

 petals in S , rudimentary in $ . Pistils 3 to 5, distinct below, with cohe- 

 rent styles, in fruit crustaceous, 2-valved, 1 or 2-seeded. J> J> With sharp 

 prickles, pinnate leaves, and small, greenish flowers. 



1 Z. Aiiicricaiiuiii Mill. Prickly; Ifts. 9--11, ovate, sessile, equal at base; umbels 



axillary ; sep. obsolete, pet. 5. Woods. 10 12f. Flowers before leaves April. 



2 Z. Carolinianum Lam. Prickly; Ifts. 7 13, nilcate-lanceolate, very inequilat 



eral. petiolulate ; panicles terminal ; s^p minute ; bark warted around the pricklea. 

 8. States. Tree, 20 40f. Bark intensely pungent to the taste. Mav. 



