MYRTACEAE 831 



exserted : filaments elongated : anthers cordate. Style pubescent. Ovules 2 in each cavity. 

 Fruit an aggregation of imbricated scale-like drupes. Seeds flattened. Embryo with con- 

 volute cotyledons. BUTTONWOOD. 



1. Conocarpus er6cta L. A glabrate or silky-pubescent shrub or tree, sometimes 20 

 m. tall, with angled or winged twigs. Leaf-blades 2-5 cm. long, elliptic to oval, acute or 

 acuminate at both ends, entire, short-petioled : racemes 3-5 cm. long, peduncled : heads 5-8 

 mm. in diameter at flowering time : hypanthium funnel-like, greenish, a little over 1 mm. 

 long : sepals triangular-ovate, about as long as the limb of the hypanthium, pubescent : 

 stamens and style conspicuously exserted : heads of fruit 9-14 mm. Jong : 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. 



3. LAGUNCTJLARIA 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, some- 

 what angled. Seed solitary, germinating in the drupe. Cotyledons convolute. WHITE 

 BUTTONWOOD. WHITE MANGROVE. 



1. Laguncularia racemosa Gaertn. f. 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. [L. glabrifolia Presl. ] 



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



FAMILY 5. MYRTACEAE R. Br. MYRTLE FAMILY. 



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

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

 pellucid-punctate, flat, 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 distinct or partially 

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

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



Calyx of several persistent valvate sepals : petals present. 

 Calyx of regularly separating sepals. 



Inflorescence centripetal : flowers in raceme-like umbel-like or contracted clusters. 



1. EUGENIA. 



Inflorescence centrifugal : flowers in cymes. 2. ANAMONIS. 



Calyx of irregularly separating sepals. 3. PSIDIUM. 



Calyx lid-like, deciduous : petals wanting. 4. CHYTRACULIA. 



1. EUGENIA L. 



Shrubs or trees, with usually glabrous foliage. Leaves opposite : blades commonly 

 leathery, feather-nerved. Flowers axillary, solitary, or in umbel-like raceme-like or con- 

 gested clusters. Sepals 4-5, imbricated or valvate. Petals white, 4-5, spreading or 

 converging and united. Stamens numerous : filaments filiform, distinct and in several 

 series, or aggregated into 4 groups and slightly united : anthers versatile. Ovary sessile, 

 2-3-celled. Ovules several in each cavity. Berries pulpy, or rather dry and leathery, 

 crowned with the calyx. Seeds often 1-4. STOPPER. 



