EHIZOPHOEACEAE. 81 



cm. long, or rarely larger, mostly short-acuminate, pubescent beneath, at least 

 when young, manifestly petioled: inflorescence pubescent: hypanthium about 

 2 mm. wide during anthesis: calyx pubescent, less than 2 mm. in diameter: 

 fruits subglobose or oval, 5-7 mm. in diameter, pubescent: seeds about 4. mm. 

 long. [Chytraculia Chytraculia (L.) Millsp.] 



The Spicewood grows In hammocks of the lower eastern coast, and on the 

 Everglade Keys and the Florida Keys. The brown or red-tinged heart-wood is 

 close-grained, very heavy, and hard. (W. I.) 



2. C. Zuzygium (L.) Sw. Tree becoming 12 m. tall, the bark pale gray, 

 smooth, the branchlets terete, or a shrub: leaf -blades oval or elliptic, varying 

 to ovate or obovate, 4-6 cm. long, obtuse or abruptly blunt-tipped, glabrous, 

 sessile or nearly so: inflorescence glabrous; hypanthium about 4 mm. wide 

 during anthesis: calyx glabrous, 3.5-4 mm. wide: fruits subglobose or spher- 

 oidal, 8-10 mm. in diameter, glabrous: seeds about 5 mm. long. 



The Myktle-of-the-eiver grows in hammocks on the Everglade Keys. The 

 wood has not been studied. (IF. I.) 



Family 6. RHIZOPHORACEAE. Mangrove Family. 



Maritime shrubs or trees. Leaves usually opposite: blades entire or 

 toothed. Flowers perfect, solitary or variously clustered. Calyx of 3 or 4 

 valvate sepals. Corolla of 3 or 4 petals. Androecium of twice, or thrice 

 as many stamens as sepals, or of 4 times as many. Gynoecium of 2-5 

 united carpels. Ovary inferior, at least partly so. Styles united. Fruit 

 a leathery beriy crowned with or surrounded by the calyx. 



1. EHIZOPHORA L. Evergreen trees. Leaf-blades leathery, entire. 

 Flowers 2-&everal in peduncled clusters. Sepals 4, leathery. Petals 4, leathery. 

 Stamens 4-12. Ovary 2-celled, provided with a fleshy cone at maturity. Fruits 

 pendulous, the seed germinating and sending out a long radicle before the 

 fruits fall. 



1. R. Mangle L. Tree becoming 10 m. tall, with a pale ultimately furrowed 

 bark, or shrub, forming impenetrable thickets on salt and brackish shores: 

 leaf -blades elliptic to elliptic-obovate, 5-15 cm. long: sepals lanceolate, about 

 10 mm. long: petals pale yellow, linear or nearly so: fruits 2-3 cm. long, the 

 radicle becoming several dm. long. — All year. 



The ^IA^■GI^o^■E grows along the coasts of southern peninsular Florida and on 

 the shores of creeks and rivers to the limit of salt or brackish water, and on the 

 Florida Keys. The reddish-brown and often streaked heart-wood is close-grained, 

 very heavy, and hard. (IF. 7.) 



Order AMMIALES. 



Herbs, shrubs, trees, or vines. Leaves alternate or opposite: blades 

 simple or compound. Flowers perfect, polygamous, or dioecious, often 

 borne in umbels. Calyx of typically 5 small sej^als surmounting the 

 hypanthium. Corolla typically of 5 petals, or wanting. Androecium of 

 as many stamens as the sepals. Gynoecium 2-carpellar3' or rarely several- 

 1-carpellary. Ovaiy inferior. Fruit drupaceous or baccate, or dry and 

 then a cremocarp. 



style single: leaves opposite. Fam. 1. Nvssaceae. 



Styles several : leaves alternate. Fam. 2. Hederaceae. 



Trees of Florida G. 



