ERICACEAE. 83 



3. CYNOXYLON Raf. Trees. Leaves opposite. Flowers perfect, borne 

 in involuerate heads. Sepals 4, broadly ovate to oblong. Petals 4, greenish 

 or yellow-green, recurving. Stamens 4. Drupe elongate. — Dogwood. 



1. C. floridum (L.) Raf. Tree sometimes 15 m. tall, with rough black bark, 

 or shrub: leaf -blades elliptic to oval, 5-18 cm. long, pale beneath: involucral 

 bracts white or pink, obovate, 4-6 cm. long: petals linear, 3-4.5 mm. ?ong: 

 drupes oblong to oval, about 15 mm. long, red. — Spr. 



The Flowering-dogwood grows in woods in northern Florida, and in the 

 peninsula to the lake region. The pale-brown heart-wood is very close-grained, 

 heavy, hard, and strong. (Cont.) 



Family 2. HEDERACEAE. Ivy Family. 



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

 compound. Flowers perfect or polygamous, often umbellate. Calyx of 5 

 sepals, or obsolete. Corolla of 5 or 10 petals. Gyuoecium of 2-5 united 

 carpels. Styles often distinct. Fruit a berry or a drupe. 



1. ABALIA [Tourn.] L. Perennial herbs, or shrubs or trees, sometimes 

 prickle-armed or spiny. Leaves alternate: blades pinnately or ternately com- 

 pound. Umbel compound. Ovary mostly 5-celled. Styles distinct. Fruit black. 



1. A, spinosa L. Small tree or shrub, prickle-armed: blades of the leaflets 

 leathery: hypanthium broad-turbinate: petals longer than the hypanthium: 

 berries 6-7 mm. in diameter : seeds about 4 mm. long. — Sum. 



The Prickly-ash grows in rich woods and swamps in northern Florida. The 

 brown heart-wood is close-grained, light, soft, and weak. Also known as Hercules' 

 club. (Cont.) 



Series 2. GAMOPETALAE. 



Petals more or less united, or occasionally distinct, or very 

 rarely wanting. 



Order ERICALES. 



Herbs, undersbrubs, shrubs, or trees, sometimes humus-plants or 



saprophytes. Leaves alternate, often evergreen : blades simple. Flowers 



mainly perfect and complete. Calyx of 2-8, usually 5, partially united 



sepals. Corolla of 2-8, usually 5, mostly united petals. Androecium of as 



many or twice as many stamens as petals, sometimes partially reduced to 



staminodia : filaments mostly free. Gynoeeium of several united carpels. 



Fruit capsular, baccate, or drupaceous. 



Gynoeeium with a superior ovary : fruit capsular. Fam. 1. Ericace.ve. 



Gynoeeium with an inferior ovary : fruit baccate or dru- 

 paceous. Fam. 2. Vacciniaceab. 



Fa^mily 1. ERICACEAE. Heath Family. 



Shrubs, trees, or undersbrubs. Leaves often persistent : blades com- 

 monly leathery. Flowers typically perfect. Calyx of 4-7 distinct or 

 partially united sepals. Corolla of 4-7 distinct or partially united petals, 

 sometimes slightly 2-lipped. Androecium of as many or twice as many 

 stamens as there are petals : anthers opening by pores, chinks or valves. 

 Gynoeeium of 2-7 united cari)els. Fruit a capsule. 



