BUTACEAE. 55 



Sepals 4 or 5. Petals 4 or 5, broad. Ovary 1-celled: style short or wanting. 

 Ovules 2. Drupe with a single seed. All year. The following species have 

 yellow or deep-yellow, very resinous, close-grained, heavy, hard, and strong 

 heart-wood. 



Fruits globose : ovary glabrous : leaflets shining beneath. 1. A. elemifera. 



Fruits obovold to oblong-obovold : ovary pubescent : leaflets dull 



beneath. 2. A. balsamifera. 



1. A. elemifera L. Shrub, or tree becoming 17 m. tall: leaflets 3 or 5; blades 

 ovate to rhombic-ovate, 2-8 cm. long: petals 2.5-3.5 mm. long: drupes 4-8 mm. 

 long, black beneath the bloom. TORCHWOOD. 



Coastal hammocks, lower eastern coast, E. Keys and adj. western coast, and on 

 the F. Keys. (W. I.) 



2. A. balsamifera L. Shrub, or small tree sometimes 10 m. tall: leaflets 3-5; 

 blades ovate to rhombic-ovate, 5-13 cm. long, dull beneath: drupes obovoid- 

 oblong to obovoid, 6-14 mm. long. BALSAM-TOBCHWOOD. 



Coastal hammocks, s. pen. Fla. (W. /.) 



4. GLYCOSMIS Correa. Shrubs or trees. Leaf -blades 1-severai-f oliolate: 

 leaflets mostly entire. Flowers perfect, relatively small. Sepals nearly dis- 

 tinct. Petals 5, elongate. Ovary 2-5-celled: styles very short. Ovules solitary 

 in each cavity. Berry globular, the pulp very thin. 



1. G. pentaphylla (Eetz.) DC. Shrub 1-4 m. tall or small tree: leaves 

 1-5-f oliolate ; leaflets elliptic to oblong, or broadest above the middle, 8-16 cm. 

 long, glabrous: sepals orbicular to oval, 1-2 mm. long: petals oblong some- 

 times broadly so, 3-4 mm. long: filaments clavate: berries 7-10 mm. in 

 diameter, white or pink. GLYCOSMIS. 



Hammocks, Key West, Nat. of Trop. Asia. (W. I.) 



5. TRIPHASIA Lour. Shrubs. Leaf -blades 3-f oliolate : leaflets with toothed 

 blades. Flowers perfect, relatively large. Sepals united. Petals 3 or 4, narrow. 

 Ovary 3- or 4-celled: styles elongate, united. Ovules solitary in each cavity. 

 Berry resembling a small orange. . 



1. T. trifolia (Burm. f.) P. Wilson. Shrub mostly 1-2 m. tall: leaflets 3; 

 blades ovate to nearly oblong, or oval, 1-5 cm. long, shallowly crenate: calyx- 

 lobes acute: petals 12-16 mm. long: berries oblong to globular-oblong, 10-^16 

 mm. long. BERGAMOT-LIME. LIME-BERRY. 



Hammocks and fields, pen. Fla. Nat. of the E. Indies. (Cont., W. I.) 



5. CITRUS L. Shrubs or trees. Leaf -blades 1-foliolate, the petiole often 

 winged. Flowers perfect, axillary. Sepals united. Petals 5, or 4-8, mostly 

 wax-like. Ovary several-celled: styles united, deciduous. Ovules several. 

 Berry several-seeded. 



The wood of the several species of Citrus Is yellow or yellowish-white, close- 

 grained, hard, and heavy. The following species of Citrus were introduced In 

 Florida from tropical and temperate countries, some of them at a very early date. 

 The following species, and others, are extensively cultivated In Florida. 



Berry of a globose or spheroidal type, not mamlllate at the apex. 

 Wings of the petioles usually broad : pulp of the berry bitter 



and sour. 1. C. vulgaris. 



Wings of the petioles usually narrow : pulp of the berry 



sweet or sour. 2. C. Aurantium. 



Berry of an elongate type, commonly mamlllate at the apex. 

 Berry relatively small, with a relatively thin rind, the 

 pulp well developed, with abundant juice, and very acid. 

 Corolla 2-2.5 cm. wide : leaflets with a rounded apex. 3. C. Lima. 

 Corolla 3-5 cm. wide : leaflets with an acute apex. 4. C. Limonum. 



Berry relatively large, with a thick rind, the pulp only 



slightly developed, with little Juice, and not very acid. 5. C. Medica. 



