MIMOSACEAE. 81 



1. G. oblongifolius (Michx.) Small. Plants 1-3 dm. tall: blades of the upper 

 leaves oblanceolate to oblong, 3-12 cm. long, glabrous, obtuse or retuse and 

 mucronate: drupes ovoid to obovoid. Coastal sand-dunes. 



2. G. pallidus Small. Similar to G. oblongifolius in habit: blades of the 

 upper leaves elliptic to oblong, 4-10 cm. long, acute, densely white-tomentose 

 beneath, the hairs partly deciduous: drupes subglobose. Pinelands. 



3. LAUROCERASUS Reichenb. Shrubs or trees. Leaves persistent, 

 copiously impregnated with prussic acid. Flowers in axillary racemes. Hy- 

 panthium white. Sepals minute. Petals more or less angulate. Drupe with 

 a dry exocarp. 



1. L. myrtifolia (L.) Britton. Tree becoming 16 m. tall: leaf -blades elliptic 

 or oval: racemes loosely flowered, the pedicels slender: petals slightly angled: 

 drupes 8-12 mm. in diameter: stone sphaeroidal. [L. sphaerocarpa (Sw.) 

 Eoem.] Hammocks. (Bah., Cuba, Ant.) WEST-INDIAN CHEEKY. 



FAMILY 3. MIMOSACEAE. MIMOSA FAMILY. 



Herbs, shrubs, or trees. Leaves alternate: blades compound, usually 

 2-3-pinnate : stipules sometimes spine-like. Flowers mostly perfect, borne 

 in capitate or elongate usually dense spikes or racemes. Calyx of 3-6 

 partially united sepals. Corolla of 3-6 equal, distinct or partially united 

 petals. Androecium of 3-6, or many, stamens which are usually con- 

 spicuously exserted. Gynoecium 1-carpellary. Fruit a legume. 



Stamens numerous, more than 10. 



Filaments partially united into a tube. 



Valves of the pod not separating from the continuous 



margin. 1. PITHECOLOBIUM. 



Valves of the pod separating from the continuous margin. 2. LYSILOMA. 

 Filaments distinct, or the inner ones sometimes slightly 



united at the base. 



Ovary stlpitate : petals distinct or united, commonly only 

 to below the middle : pods flat, dry, the seeds not in 

 two distinct rows. 3. ACACIA. 



Ovary sessile : petals united into a tubular-funnelform, 

 shallowly lobed corolla : pods nearly terete or broader 

 than high, pulpy within, the seeds in two separate rows. 4. VACHELLIA. 

 Stamens as many as the petals or the corolla-lobes or twice as 



many. 

 Anthers without glandular appendages at the top. 



Valves of the pod not separating from the continuous 



margin. 5. LEUCAENA. 



Valves of the pod separating from the continuous margin. 6. MORONGIA. 



Anthers, at least in the bud, topped by glandular appendages. 7. NEPTDNIA. 



1. PITHECOLOBIUM Mart. Shrubs or trees. Leaves 2-pinnate: leaflets 

 few, often 4. Spikes capitate. Calyx-lobes minute. Corolla prominently 

 lobed. Pods narrow, often pulpy within. Seeds with colored arils. 



Ovary glabrous, shorter than the stipe : petioles larger than the petiolules. 



1. P. L'nguis-Cati. 

 Ovary pubescent, larger than the stipe ; petioles shorter than 



the petiolules. 2. P. guadelifpensis. 



1. P. Unguis-Cati (L.) Benth. Unarmed shrub or small tree: blades of the 

 leaflets thinnish, broadly obovate, oval, or suborbicular, 1-4.5 cm. long: calyx 

 1.5-2 mm. long; lobes wider than long, blunt: corolla 3.5-4.5 mm. long: pods 

 long-stipitate. Coastal sand-dunes. F. K. (Bah., Cuba, Ant.) CAT 'S-CLAW. 



2. P. guadelupensis Chapm. Armed shrub or small spreading tree: blades of 

 the leaflets leathery, oblong to cuneate, oval or suborbicular, 3-7 cm. long: 

 calyx 2.5-3 mm. long; lobes longer than wide, acute: corolla 5-6 mm. long: 



Flora of Miami 6 



