KUTACEAE. 53 



FAMILY 1. ZYGOPHYLLACEAE. CALTROP FAMILY. 



Shrubs, trees, or perennial herbs. Leaves opposite or alternate by the 

 suppression of one of each pair: blades compound. Flowers perfect. 

 Calyx of 4-6, mostly 5, sepals. Corolla of 4-6, mostly 5, petals or rarely 

 wanting. Androecium of twice as many stamens as there are sepals. 

 Gynoecium of 2-4-united carpels. Fruit capsular, sometimes baccate at 

 maturity, sometimes separating into nut-like carpels. 



1. GUAIACTJM [Plum.] L. Shrubs or trees. Leaves relatively large, 



persistent, the leaflets but little longer than wide. Sepals 5 or rarely 4, 



unequal. Petals blue or purple. Filaments unappendaged. Fruit angled or 

 winged. 



1. G. sanctum L. Shrub or tree sometimes 10 m. tall, the bark pale: leaves 

 5-10 cm. long; leaflets 6-8, the blades broadly oblong to obovate, 2-3 cm. 

 long: sepals obovate to oblong- obovate, 6-7 mm. long: corolla about 2.5 cm. 

 wide; petals broadly obovate: fruit obovoid, 15-17 mm. long, orange. 



LlGNUM-VITAE. 



Hammocks, F. Keys. (W. 7.) Spr. 



.JfifoJ 



FAMILY 2. MALPIGHIACEAE. MALPIGHIA FAMILY. 



Shrubs or trees, or partially woody herbs or vines. Leaves opposite : 

 blades simple. Flowers usually perfect, sometimes cleistogamous. Calyx 

 of 5 often gland-bearing sepals. Corolla of 5 usually clawed petals, or 

 wanting. Androecium of 5-10 perfect or partly sterile stamens. Gynoe- 

 cium of 2-4, usually 3, distinct or united carpels. Fruit drupaceous, 

 capsular, or nut-like. 



1. BYBSONIMA L. C. Eich. Shrubs or trees. Flowers in terminal* 

 racemes or panicles. Petals white, reddish, or purplish, reflexed. Stigmas- 

 acute. Carpels permanently united. Cotyledons circinate-coiled. 



1. B. lucida (Sw.) DC. Evergreen shrub or small tree, mostly 3-18 dm. tall:: 

 leaf -blades spatulate to obovate-spatulate, 24 cm. long, lustrous above:: 

 racemes 2-4 cm. long: petals white, turning yellow or rose, 7 mm. long, the? 

 blades reniform: drupes 4-6 mm. in diameter. LOCUST-BERRY. 

 Hammocks, E. Keys and F. Keys. (W. 7.) 



FAMILY 3. RUTACEAE. RUE FAMILY. 



Shrubs or trees or rarely herbs, often prickle armed, with glandular- 

 punctate tissues. Leaves alternate or opposite: blades simple or pin- 

 nately compound, sometimes 1-foliolate. Flowers perfect or polygamous, 

 mostly regular. Calyx of 3-5, or rarely more, sepals, or wanting. Corolla 

 of 3-5, or rarely more, petals. Androecium of as many stamens as there 

 are sepals or petals or rarely thrice as many. Gynoecium of 2-5 distinct 

 or united carpels. Fruit capsular, samaroid, drupaceous or baccate. 



Fruit dry, follicular or samaroid. 



Fruit dehiscent, a follicle. 1. ZANTHOXYLUM. 



Fruit indehiscent, a samara. 2. PTELEA. 



Fruit fleshy, drupaceous or baccate. 



Fruit a drupe : ovary 1-celled. 3. AMYRIS. 



Fruit a berry : ovary 2-several-celled. 

 Stamens 6-10: carpels 1-ovuled. 



Styles very short or obsolete, persistent : ovary 5-celled. 4. GLYCOSMIS. 

 Styles elongate, deciduous : ovary 3- or 4-celled. 5. TBIPHASIA. 



Stamens 20 or more : carpels several-ovuled. 6. CITRUS. 



