54 SUEIANACEAE. 



5. CITRUS L. Skrubs 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 different species are also extensively cultivated. 



Berry of a globose or spheroidal type, not mamillate 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. Aurantiuin. 



Berry of an elongate type, commonly mamillate 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. 



1. C. vulgaris Eisso. Small tree with sharp thorns: leaflets ovate to oblong, 

 6-12 cm. long, often acuminate, the petioles usually broadly winged: flowers in 

 small cymes: sepals often obtusish: berries dark-orange or reddish, the rind 

 thick, the pulp sour and bitter. 



The Bitter-sweet or.\xge grows in woods and hammocks in peninsular Florida 

 and on the Florida Keys. (ir. /. ) 



2. C. Aurantium L. Small tree with short sharp thorns: leaflets oval, oblong- 

 ovate, or ovate, 6.5-13 cm. long, often acute or rounded, the petioles usually 

 narrowly winged: flowers in axillary clusters: sepals often acute: berries 

 mostly yellow, the rind usually thin, the pulp sour or sweet. 



The Sweet-oeakge grows in woods and hammocks in peninsular Florida and 

 on the Florida Keys. (W. I.) 



3. C. Lima Lunan. Small tree or straggling shrub, with numerous sharp 

 thorns: leaflets oval to oblong-elliptic, 6.5-9 cm. long, commonly rounded at 

 the apex, crenulate: petioles narrowly winged: flowers in clusters of 3-10: 

 petals white without and within: berries small, mostly less than 6 cm. long, the 

 rind very thin, the pulp greenish. 



The Lime grows in woods, thickets, and hammocks in peninsular Florida and 

 on the Florida Keys. (W. I.) 



4. C. Limonum (L.) Eisso. Small tree or spreading shrub, less thorny than 

 C. Lima: leaflets oblong-elliptic or ovate-oval, 5-11 cm. long, commonly acute 

 or acuminate at the apex, crenate: petioles broadly winged: flowers solitary or 

 2 together : petals purplish without, white within : berries large, mostly over 6 cm. 

 long, the rind relatively thin, the pulp yellowish. 



The Lemon grows in woods and hammocks in peninsular Florida and on the 

 Florida Keys. (II'. 7.) 



5. C. Medica L. Small tree or shrub, sometimes with stout thorns: leaflets 

 oblong to elliptic, or slightly broadened upward, 12-20 cm. long, rounded and 

 often emarginate at the apex, serrulate-erenate, dull-green: flowers in clusters 

 of 3-10: petals purple-tinged without, white within: berries oblong or oval, 

 usually very large, mostly 12-20 em. long, often coarsely wrinkled, the rind 

 very thick. 



The Citron grows in hammocks and woods in peninsular Florida and on the 

 Florida Keys. (W. I.) 



Family 3. SURIANACEAE. Bay-cedar Family. 



Shrubs or trees of coastal sands. Leaves alternate: blades entire. 

 Flowers perfect, solitary, or few in tenninal clusters. Calyx of 5 per- 

 sistent sepals. Corolla of 5 clawed petals. Androecium of 10 stamens. 



