530 219- RUBIACEAE 



2-celled. Shrubs or undershrubs. — Species 30. Tropics. Some are used 

 as ornamental, medicinal, or dye-plants. (Including Spallanzania DC.) 



Mussaenda L. 

 Flowers in axillary inflorescences 129 



129. Inflorescences head-like and surrounded by a large, more or less bell- 



shaped involucre of united bracts. Stamens inserted in the corolla- 

 tube 130 



Inflorescences with an involucre of free bracts or without an involucre. 131 



130. Calyx deeply divided ; segments at first awl-shaped, subsequently some 



or all broadened and leaf-like. Ovary-cells and style-branches 5. 

 Fruit globose. Erect herbs. — Species i. Equatorial \^'est Africa. 



Temnopteryx Hook. fil. 



Calyx cleft about halfway down ; segments ovate. Fruit ovate or oblong. 



Shrubs. — Species 4. Central Africa Stipularia Beauv. 



131. Stamens inserted in the middle of the corolla-tube. Calyx deeply divided ; 



segments enlarged, leaf-hke. Ovary 5-celled. Decumbent herbs. — 



Species i. West Africa Pentaloncha Hook. fil. 



Stamens inserted at the mouth of the corolla-tube or somewhat below it. 

 Shrubs 132 



132. Corolla funnel-shaped. Calyx deeply divided. Disc cup-shaped. Ovary- 



cells and style-branches 2. Flowers in clusters springing from the 

 base of the stem. Erect, glabrous plants. — Species i. Equatorial 



West Africa (Cameroons) Ecpoma K. Schum. 



Corolla tube- or salver-shaped. Hairy, usually twining plants. — 

 Species 35. Tropics Sabicea Aubl. 



133. (124.) Seeds winged, numerous. Fruit a capsule. Trees or shrubs. 



Stipules entire or toothed 134 



Seeds wingless. Herbs, undershrubs, or shrubs. [Tribe OLDEN- 

 LANDIEAE.] 143 



134. Flow^ers in heads, 5-merous 135 



Flowers in panicles. [Tribe CINCHONEAE.] 137 



135. Calyx 5-cleft with leaf-like segments imbricate in the bud. Corolla 



tubular. Stamens concealed in the corolla-tube. Placentas ascending. 



Style 2-cleft. — Species i. Madagascar Payera Baill. 



Calyx with small and narrow segments, open in the bud, or entire. Corolla 

 long funnel-shaped. Stamens inserted at the throat of the corolla. 

 Placentas pendulous or adnate to the partition of the ovary. Style 

 simple, far exserted. Fruit a septicidal capsule 136 



136. Calyx entire or shortly toothed. Stigma hood-shaped. — Species 4. 



Central Africa. They yield timber, dyes, and medicaments. {Mamboga 



'S>\2LnQo,StephegyneKorih..,\mdGrNaucleah.) . . . Mitragyne Korth. 



Calyx cleft about to the middle. Stigma head- or club-shaped. — Species 



4. Central and South Africa. Yielding timber. . . . Adina Salisb. 



137. Placentas shortly adnate to the partition of the ovary and more or less 



distinctly stalked 138 



