KEY TO THE FAMILIES Al 
5. Leaves palmately 8- to 7-foliolate. 
6. Herbs; fruit a dehiscent capsule. 
7. Leaves 3-foliolate, the leaflets retuse; juice acid. 
66. Owalidaceae (p. 264) 
(Owalis) 
7. Leaves usually 5-foliolate; erect, branched, often rank- 
scented herbs........................ 59. Capparidaceae (p. 214) 
6. Shrubs or small trees. 
7. Leaves glandular-punctate, 3-foliolate; spiny shrubs or 
small trees with small to large, few- to many-seeded 
flemhip iitaits. cite ess. 69. Rutaceae (p. 268) 
7. Leaflets not glandular-punctate, 5- to 7-foliolate; unarmed 
shrubs with small drupaceous fruits. 
79. Sapindaceae (p. 303) 
(Allophylus) 
5. Leaves simply pinnate. | 
6. Prostrate herbs with solitary, pedicelled, axillary flowers, the 
fruit of spinous cocci...............: 68. Zygophyllaceae (p. 267) 
6. Erect herbs with sensitive leaves crowded at the ends of the 
stems; fruit a capsule: :...::1:4.52.2:4¢ 66. Oxalidaceae (p. 264) 
: (Biophytum) 
6. Erect shrubs or trees. 
7. Leaves glandular-punctate................ 69. Rutaceae (p. 268) 
7. Leaves not glandular-punctate. 
8. Anthers borne inside or at the apex of .a tube formed of 
the wholly united filaments........ 72. Meliaceae (p. 273) 
8. Stamens free, or the filaments united at the base only. 
9. Sepals usually imbricate in bud. 
10. Sepals free or nearly so. 
11. Flowers regular; ovary 5-celled; ovules pendulous; 
fruit fleshy, acid, indehiscent. 
66. Oxalidaceae (p. 264) 
(Averrhoa) 
11. Flowers often irregular; ovary 1- to 4-celled; 
ovules erect; fruit dry or fleshy, dehiscent or 
indehiscent.................... 79. Sapindaceae (p. 303) 
10. Sepals united at the base. 
11. Ovules and seeds pendulous; plants with bitter 
park.. So sewine. 2 70. Simarubaceae (p. 272) 
11. Ovules and seeds erect. 
76. Anacardiaceae (p. 298) 
(Spondias) 
9. Sepals valvate in bud; trees with resinous sap. 
71. Burseraceae (p. 273) 
1. Ovary inferior. 
2. Stamens numerous, several to many times as many as the petals. 
3. Aquatic herbs from submerged rootstocks, with large flowers, and 
rounded, usually floating leaves; styles and stigmas united into a 
THOIACG MR ..d a een ead 49. Nymphaeaceae (p. 201) 
3. Fleshy, green, leafless, usually spiny, terrestrial plants, with jointed 
SLOMGA etre eee RS knit 96. Cactaceae (p. 338) 
3. Succulent terrestrial herbs with broad, inequilateral leaves; flowers 
unisexual; fruit a winged capsule.............. 95. Begoniaceae (p. 338) 
