GENERA. 



I. CORNEiE. 



1. Cornus T. — Flowers hermaphrodite regular, receptacle ob- 

 conical, turbinate or urceolate, very concave, enclosing adnate 

 germen. Calyx short, inserted in mouth of receptacle, 4-dentate. 

 Petals 4, inserted with calyx, valvate. Stamens 4, epigynous, alter- 

 nating with petals ; filaments slender, inserted under epigynous 

 pulvinate sometimes tubular or thin disk, inflexed at apex ; anthers 

 introrse, versatile, 2-celled, 2-rimose. Germen inferior, 2- or more 

 rarely 3, 4-celled ; style erect simple, at apex stigmatose clavate or 

 truncate or capitate, sometimes obscurely lobed. Ovules in cells 

 sohtary, inserted at top of internal angle, descending; micropyle 

 introrsely superior, finally often lateral. Fruit drupaceous, areolate 

 at apex ; putamen 2- or more rarely 3, 4-celled. Seeds in cells 

 solitary, descending; coat thin; albumen fleshy; embryo subequal 

 to albumen, or more rarely more or less incurved ; cotyledons folia- 

 ceous or narrow ; radicle terete superior. — Trees, shrubs, or more 

 rarely herbs, glabrous orsericious ; leaves opposite or rarely alternate, 

 exstipulate, petiolate, or subsessile, entire or serrulate; flowers 

 (springing before or after the leaves) in 2-chotomou8ly ramose com- 

 pound coryinbiform cymes, or in capituliform glomerules ; bracts 

 around flowers small, imbricate or sometimes large 4-8, peta- 

 loid involucrate; fruit free, sometimes (Benthamia) confluent in 

 areolate fragiform syncarp. {Europe, Asia, and both temp. Americas.) 

 — See p. 66. 



2. Corokia A. Cunn. — Flowers (nearly of Cornus) oftener 5- 

 merous ; sepals valvate. Petals 5, longer, externally sericeous, 

 generally with small internal scale at base; prefloration valvate. 



