46 MIMOSACEAE. 



4. PADUS Borckl. Shrubs or trees. Leaves deciduous, manifestly im- 

 pregnated with prussic acid. Flower in terminal racemes. Hypanthium green. 

 Sepals relatively large. Petals not angulate. Drupe with a juicy exocarp. — 

 Wild-cherry. 



1. P. virginiana (L.) Mill. Tree with spreading branches, becoming 35 

 m. tall, the bark aromatic and bitter: leaf -blades firm, oblong or elliptic, vary- 

 ing to obovate or lanceolate, 5-15 cm. long, acimiinate or acute at both ends, or 

 rounded at the base, finely serrate with callous teeth, glabrous or nearly so: 

 sepals ovate, longer than broad: corolla 8-10 mm. broad: drupes globose, 8-10 

 mm. in diameter, dark purple or nearly black, sweet but slightly astringent. 

 [P. serotina (Ehrh.) Agardh.] — Spr. 



The Wild black-chehey grows In woods and river swamps in nortliern Florida 

 and the peninsula to near the Everglade region. The light-brown or red heart- 

 wood is close-grained, light, rather hard, and strong. Also known as Rum-cherry. 

 {Co lit.) 



5. LAUROCEEASUS Eeichenb. Shrubs or trees. Leaves persistent, 

 copiously impregnated with prussie acid. Flowers in axillary racemes. Hypan- 

 thium white. Sepals minute. Petals more or less angulate. Drupe with a 

 dry exocarp. 



Petals larger than the sepals : drupe subglobose. 1. L. myrtifolia. 



Petals smaller than the sepals : drupe oblong or oval. 2. L. caroUniana. 



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

 racemes loosely flowered, the pedicels slender: petals slightly angled: drupes 

 S-12 mm. in diameter: stone sphaeroidal. [L. sphaerocarpa (Sw.) Eoem.] 

 — Fall. 



The West-ixdiax cheeky grows in hammocks on the Everg4ade Keys and the 

 Florida Keys. The usually red heart-wood is close-grained, heavy, and hard. (W.I.) 



2. L. caroliniana (Mill.) Roem. Tree becoming 12 m. tall: leaf -blades nar- 

 rowly elliptic to oblong-oblanceolate : racemes densely flowered, the pedicels 

 stout : petals salieutly angled : drupes 10-13 mm. long : stone ovoid. — 

 Winter & spr. 



The MocK-OEAXGE grows in woods, usually on river banks nearly throughout 

 Florida. The red-brown or dark-brown heart-wood is close-grained, heavy, hard, 

 and strong. {Cont., Bcr.) 



Family 6. 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. Androeeium of 3-6 or many stamens which are usually conspicu- 

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



Stamens numerous, more than 10 : petals united. 



Filaments partially united into a tube : corolla and calyx, 

 unlike. 

 Pod valves not separating from the margin. 



Pods contorted and spiral : seeds arillate : leaves few- 



foliolate. 1. Pithecolobium. 



Pods straight : seeds not arillate : leaves many- 



foliolate. 2. Albizzia. 



Pod-valves separating from the continuous margins. 3. Lysiloma. 

 Filaments distinct : corolla like the calyx, but longer. 4. Vachellia. 



Stamens as many as the petals : petals distinct. 5. Leucaena. 



1. PITHECOLOBRIUM Mart. Shrubs or trees. Leaves 2-pinnate: leaf- 

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

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

 vear. 



