54 EUTACEAE. 



1. ZANTHOXYLUM [Catesby] L. Shrubs or trees. Leaf -blades pinnate, 

 sometimes 1-foliolate. Flowers polygamous, in axillary spikes or terminal 

 corymb-like or cyme-like panicles. Sepals present or wanting. Petals 4 or 5, 

 mostly erect. Mature carpels solitary, or 2-5 together. Spr.-sum., or all year. 



Flowers In small axillary spikes : sepals, petals and stamens 4. 1. Z. Fagara. 

 Flowers in large terminal cyme-like or corymb-like panicles : 



sepals, petals and stamens 3 or 5. 

 Sepals, and petals, 5 : leaflets herbaceous. 



Sepals triangular or deltoid, partially united, persistent. 2. Z. flavum. 

 Sepals ovate or ovate-lanceolate, distinct, deciduous. 3. Z. Clava-Herculis. 

 Sepals, and petals, 3 : leaflets leathery. 4. Z. coriaceum. 



1. Z. Fagara (L.) Sarg. Shrub, or tree sometimes 10 m. tall, the trunk slender, 

 often inclining: leaves 2.5-11 cm. long, the rachis winged: blades of the 

 lateral leaflets mostly obovate to oval, 1-2.5 cm. long, shallowly crenate: 

 mature carpels subglobose, 3.5-4 mm. long. WILD-LIME. 



Coastal hammocks, lower pen. Fla., and those of the E. Keys and F. Keys. ( W. I.) 



2. Z. flavum Vahl. Shrub, or tree sometimes 12 m. tall, unarmed, the twigs 

 stellate-canescent : leaves 9-25 cm. long, the rachis terete: blades of the lateral 

 leaflets mostly oblong or ovate, 3.5-10 cm. long: mature carpels obovoid, 5-9 

 mm. long. YELLOW-WOOD. SATIN-WOOD. 



Hammocks, lower F. Keys. (TV. /.) 



3. Z. Clava-Herculis L. Shrub, or tree sometimes 17 m. tall, the prickles 

 raised on corky bases: leaves 1-3 dm. long; blades of the lateral leaflets ovate, 

 4-5 cm. long, appressed-serrate : mature carpels mostly 2-5 together, about 

 4-6 mm. long. TOOTHACHE-TREE. PRICKLY-ASH. SEA-ASH. PEPPER-WOOD. 



Hammocks, nearly throughout Fla., except the F. Keys. (Cont.) 



4. Z. coriaceum Eich. Shrub, or tree becoming 7 m. tall: leaves 6-15 cm. 

 long; blades of the leaflets leathery, rigid, obovate to cuneate or oblong with 

 acuminate base, 2-6 cm. long: mature carpels 5-6 mm. long. HERCULES '-CLUB. 



Coastal hammocks, lower eastern coast of Fla. and the F. Keys. (W. I.) 



2. PTELEA L. Shrubs or trees. Leaf-blades 3-foliolate or rarely 5- 

 foliolate. Flowers polygamous, in corymbose or panicled cymes. Sepals 4 or 5. 

 Petals 4 or 5, narrow. Ovary 2-3-celled. Ovules 2 in each cavity, superposed. 

 Samara winged all around. SHRUBBY-TREFOIL. 



Filaments copiously pubescent nearly up to the anthei'S : anthers ovoid, narrowed at 

 the apex. 1. P. trifoliata. 



Filaments pubescent at the middle : anthers oval, rounded at the 



apex. 2. P. Baldwlnii. 



1. P. trifoliata L. Shrub, or tree sometimes 8 m. tall: blades of the leaflets 

 ovate, oval, elliptic, oblong, oblong-lanceolate, or oblanceolate, 4-12 cm. long: 

 panicles many-flowered: sepals ovate or oblong-ovate, 1.5 mm. long: petals 

 nearly oblong, 4-6 mm. long: filaments 3.5-4 mm. long: anthers ovoid, about 

 1.5 mm. long: samaras suborbicular or oval-orbicular, 2-2.5 cm. long. HOP- 

 TREE. WAFER-ASH. 



Rich woods and rocky river-banks, n. Fla. (Cont.) Spr. 



2. P. Baldwin!! T. & G. Shrub: blades of the leaflets oval or ovate, 1-2 cm. 

 long: panicles few-flowered: sepals oval, less than 1 mm. long: petals oblong- 

 oblanceolate or oval, 3-4 mm. long: filaments 1.5-2 mm. long: anthers oval, 

 about 1 mm. long. 



Woods, vicinity of St. Johns, e. Fla. (Endemic.) Early spr. Not recently 

 collected. 



3. AMYBIS [P. Br.] L. Shrubs or trees. Leaf-blades pinnate, or 1- 

 foliolate, the petiole wingless. Flowers perfect or polygamous, paniculate. 



