MYETACEAE 831 



of the hypanthium, pubescent: stamens and style conspicuously exserted: heads of 

 fruit 9-14 mm. long: drupes scale-like, 2-winged, 4-7 mm. long. 



On muddy or sandy shores, peninsular Florida and the Keys. Common in the West 

 Indies and on the shores of Central America and tropical South America. Summer or all 

 year. Buttonwood. 



4. LAGUNCULARIA Gaertn. 



Maritime shrubs or trees. Leaves fleshy, opposite: blades entire, obscurely 

 nerved: petioles bearing 2 glands. Flowers polygamous, inconspicuous, in simple or 

 compound spikes. Hypanthium terete or nearly so, scarcely produced beyond the 

 ovary. Sepals 5, persistent. Petals 5, minute, caducous. Stamens 10, included: 

 filaments subulate, in 2 series: anthers cordate. Ovary surmounted by an epigynous 

 disk with a scalloped edge: style glabrous: stigma slightly 2-lobed. Ovules 2 in each 

 cavity. Drupe leathery, somewhat angled. Seed solitary^ germinating in the drupe. 

 Cotyledons convolute. 



1. Lagunculaiia racemosa (L.) Gaertn. A shrub or tree, sometimes 20 m. 

 tall, with a maximum trunk diameter of about 5 dm. Leaf-blades oblong, varying 

 to oval or obovate, 2-5 cm. long, rounded or usually notched at the apex, undulate, 

 rounded or subcordate at the base; petioles stout, 5-20 mm. long: spikes rather rigid, 

 3-6 cm. long, rather few-flowered: hypanthium subtended by minute scales, oblong or 

 obovoid, ribbed, finely tomentose, often bearing 2 minute scales above the middle: 

 sepals semiorbicular, acutish: petals 5, suborbicular, not surpassing the sepals: 

 drupes oblong-obovoid, 2 cm. long, strongly ribbed, constricted below the crown of 

 sepals. 



On the coast, peninsular Florida. Also in the Bermudas, West Indies and tropical 

 America. All year. White Bdttonwood. White Mangeove. 



Family 5. MYRTACEAE R. Br. Myrtle Family. 



Shrubs or trees, or rarely herbs, abounding in pungent and aromatic volatile 

 oil. Leaves opposite, or rarely alternate or wborled : blades often simple, 

 pellucid-punctate, fiat, terete or semiterete, with nerves parallel with the mar- 

 gins. Stipules wanting. Flowers perfect, regular. Calyx of 4—5 or many val- 

 vate or imbricated persistent sepals, or cup-like and deciduous. Petals inserted 

 on the margin of a disk, or sometimes wanting. Androecium of numerous 

 stamens, very rarely as many as the sepals. Filaments distmct or partially 

 united. Anthers opening longitudinally. Gynoeciimi compound. Ovary in- 

 ferior or partly so, in a fleshy disk, 1-many-celled. Styles tenninal or rarely 

 lateral, united. Stigma usually terminal, entire. Ovules solitary or numerous. 

 Fruit sometimes dehiscent, often crowned with the calyx. Seeds straight, often 

 angled. Testa membranous or crustaceous. Endosperm wanting. 



Hypanthium not produced beyond the ovary: calyx of separate sepals: petals 

 present: ovules numerous. 

 Calvx of regularly separating sepals: ovary mostly 2-3-celled. 



inflorescence centripetal: flowers in racemes or umbel-like clusters, or 



solitary. 1- Eugenia. 



Inflorescence centrifugal: flowers in cymes. ^- Anamomis. 



Calyx of irregularly separating sepals: ovary mostly 4-5-celled. 3. Psidium. 



Hypanthium produced beyond the ovary: calyx lid-like: petals wanting: ovules 



1 or 2 in each cavity or the ovary. 4. Chytraculia. 



1. EUGENIA L. 



Shrubs or trees. Leaf-blades not prominently ribbed. Flower-clusters short- 

 peduncled or sessile. Berry crowned with the persistent calyx. Seeds 1-4. Stopper. 



Flowers in very short racemes. ■, r^ . ,■ ,■ 



I.eaf-blades broadest above the middle: fruit longer than broad. 1. Ji. biixijolia. 



Leaf-blades broadest below the middle: fruit broader than long. 2. E. axillaris. 



Flowers solitarv in the axils, or in umbel-like clusters. 



Peduncles shorter than the subtending leaf-like bracts. , r • 



Leaf-blades acute or slightly acuminate: corolla about 10 mm. broad: fruit 



much broader than long. 3. E. rhombea. 



Leaf-blades abruptly and conspicuously acuminate: corolla about 6 mm. 



broad: fruit as long as broad. 4. E. confusa. 



Peduncles surpassing the subtending leaf-like bracts. 5. E. longipes. 



