46 CASSIACEAE. 



4. VACHELLIA Wight & Arn. Shrubs or small trees. Leaves 2-pin- 

 nate: leaflets numerous, small. Spikes globose. Calyx-lobes minute and 

 relatively short. Corolla about twice as long as the calyx, the lobes short. 

 Filaments distinct. Pod very turgid. 



1. V. Farnesiana (L.) Wight & Arn. Shrub or small tree: leaf -pinnae 8-16; 

 leaflets 20-25, the blades linear-oblong, 2-4 mm. long: calyx about 1.5 mm. 

 long: corolla 2-2.5 mm. long: pods 3-7.5 cm. long. YELLOW-OPOPANAX. 



Woods, thickets, pinelands and hammocks, nearly throughout Fla. Naturalized 

 in some places. (Cant., W. I.) 



5. LEUCAENA Benth. Shrubs or trees. Leaves mostly 2-pinnate: 

 leaflets often small and numerous. Spikes capitate. Calyx-lobes minute. 

 Petals distinct or rarely slightly coherent. Filaments distinct or nearly so. 

 Pod linear, flat. 



1. L. glauca (L.) Benth. Shrub or small tree: leaflets 6-12 mm. long; blades 

 narrowly oblong to lanceolate, over 1.5 mm. broad: calyx 2-2.5 mm. long or 

 rarely shorter: petals 4-4.5 mm. long: pods 15-25 cm. long. LEAD-TREE. 

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



FAMILY 9. CASSIACEAE. SENNA FAMILY. 



Trees, shrubs, or herbs. Leaves alternate: blades compound, 1-2- 

 pinnate, rarely 1-foliolate. Flowers perfect, polygamous, monoecious, or 

 dioecious, more or less irregular. Calyx of 3-5, usually slightly united, 

 sepals, sometimes borne on the edge of a well developed hypanthium. 

 Corolla of 3-5 unequal distinct petals. Androecium of 6-10 distinct or 

 nearly distinct stamens. Gynoecium 1-carpellary. Fruit a legume. 



Corolla apparently papilionaceous : leaves with 1-foliolate blades 1. CERCIS. 

 Corolla irregular, but not papilionaceous. 



Leaves with 1-pinnate blades. 2. CASSIA. 



Leaves with 2-pinnate blades. 



Pods long, smooth : standard with a suborbicular or reni- 



form blade. 

 Leaf with a very short petiole which ends in a spine, 



each division with a long, flat phyllode-like rachis. 3. PARKINSONIA. 

 Leaf with a relatively long petiole, the rachises of the 



divisions not phyllode-like. 



Calyx-lobes valvate. 4. DELONIX. 



Calyx-lobes imbricate. 



Petals, except the standard, long-clawed. 5. POINCIAXA. 



Petals, except the standard, sessile or with very 



short claws. 6. CAESALPIXIA. 



Pods short, prickle-armed : standard with a cuneate or 



spatulate blade. 7. GUILANDINA. 



1. CERCIS L. Shrubs or trees. Leaves 1-foliolate: leaflet broad. Calyx 

 shallowly lobed: tube gibbous. Corolla pink-purple: keel-petals of the ap- 

 parently papilionaceous corolla longer than the others. Anthers short, opening 

 lengthwise. Pod very flat. 



1. C. canadensis L. Shrub or tree: leaf -blades broadly ovate to reniform: 

 pedicels mostly less than 1.5 cm. long: sinuses of the calyx nearly as broad as 

 the lobes: larger petals 12-13 mm. long; blades ovate: pods linear-oblong, 

 6-9 cm. long. BED-BUR. JUDAS-TREE. 



Rich woods, n. Fla. and the upper pen. (Cont.) Spr. 



2. CASSIA [Tourn.] L. Herbs, shrubs, or trees. Leaves abruptly 1-pin- 

 nate: stipules deciduous. Flowers in axillary racemes or panicles. Sepals 

 nearly distinct, leathery or petaloid. Petals mainly yellow or whitish. Pod 

 more or less turgid, indehiscent or rather tardily dehiscent. SENNA. 



