GERANIACEiE. 
[. Impatiens . 
38 
1. I. Gordoni, Horne MSS. A succulent glabrous annual or biennial 
herb, 2-3 feet high. Leaves alternate ; petiole 1-5 in. long, gland- 
less ; blade oblanceolate-oblong, acute or acuminate, 3-4 in. long, 
cuneate at the base, furnished with cuspidate teeth. Flowers in pairs, 
on a common peduncle as long as the petiole ; pedicels 1-1£ in. long, 
with two subulatp bracts at the base. Flowers 2 inches in diameter ; 
sepals green, deltoid, half as long as the petals, the lower one con- 
tracted suddenly into a spur 2-3 inches iong. Petals white, running 
into rose-pink at the base ; standard f-1 inch broad, emarginate, keeled 
on the back ; wings deltoid, an inch long, lobed nearly down to the 
base. Capsule glandular, \ inch long, narrowed from the middle to both 
ends, equal-sided or the lower side more produced. 
Seychelles, on the edge of forests in rich soil in Mahe and Silhouette, Horne , 439 ! 
Endemic. 
Order XXI. RUTACEiE. 
Flowers regular, hermaphrodite or polygamous. Sepals 4-5, free or 
connate at the base. Petals 4-5, hypogynous, imbricate or valvate. 
Disk mostly annular. Stamens hypogynous, definite or indefinite ; 
anthers 2-celled, versatile. Carpels 4-5, united or free ; styles joined ; 
ovules usually 2, superposed. Fruit permanently syncarpous or car- 
pels separating. Seeds usually solitary ; albumen none or fleshy. — 
Shrubs or trees with exstipulate compound usually gland-dotted leaves ; 
flowers in ours copious, small. Distrib. Concentrated in Australia 
and at the Cape ; many tropical, very few African. Species 600-700. 
Fruit separating into two-valved cocci. 
Leaves opposite 1. Evodia. 
Leaves alternate 2. Zanthoxylum, 
Fruit permanently syncarpous. 
Pericarp thin ; stamens definite, free 3. Todd alia. 
Pericarp thick’; stamens indefinite, polyadelphous ... * Citrus. 
1. EVODIA, Forst. 
Flowers hermaphrodite or polygamous. Sepals 4, minute, imbricated, 
patent. Petals 4, valvate. Disk tumid, lobed. Stamens 4, inserted 
on the disk ; filaments subulate ; anthers oblong. Ovary 4-celled ; 
ovules 2 ; style short ; stigma 4-lobed. Fruit of 4 1-seeded dry cocci, 
which split into two valves from the top to the bottom. — Leaves oppo- 
site, gland-dotted, simple, digitate or imparipinnate ; flowers small, 
whitish, in axillary panicles. Distrib. Species above 20 ; Australia, 
tropical Asia, I Madagascar, none Continental African. 
Leaves with three digitate gland-dotted leaflets . . 1. E. obtusifolia. 
Leaves simple, not gland-dotted 2. E. ? eljeodendroides. 
