324 xcn. scrophulariace^ (hemslbt and skan). [Dopalrium. 



24. DOPATBIUM, Hamilt. ; Benth. et Hook. f. Gen. PI. ii. 953. 



Calyx small, deeply 5-fid ; lobes imbricate. Corolla-tube slender at 

 the base, dilated at the throat ; upper outside lip short, 2-fid ; lower lip 

 large, spreading, broadly 3-lobed. Perfect stamens 2, posticous, 

 included ; filaments filiform ; anther-cells parallel, distinct, equal ; 

 staminodes 2, anticous, minute. Style short, bilamellate at the apex. 

 Ovules many. Capsule small, globose or ovoid, scarcely sulcate, 

 loculicidal ; valves entire or more rarely 2-fid. Seeds small, tubercu- 

 late. — Slender sometimes filiform glabrous herbs. Leaves opposite, 

 rather small and close together at the base of the stem, with minute 

 distant ones along the stem. Plovvers small or medium-sized, violet 

 or purple, rarely all yellow, usually in terminal racemes ; pedicels 

 e bract eate. 



Species 12, the others in Asia, 1 of which extends to Australia. 



Flowers all yellow . 1. D. luteum. 



Flowers not yellow (or only with a little yellow on the 

 lower lip). 

 Pedicels less than 1 in. long. 



Lower leaves l^-2j in. long . . . . 2. D. tricolor. 



Lower leaves less than 1 in. long. 



Calyx-teeth 1\ lin. long . . . . „ 3. D. longidens. 



Calyx-teeth § lin. long or less. 

 Pedicels 2-3 lin. long. 

 Inflorescence a raceme. 



Corolla-limb 8-10 lin. broad . . . 4. D. macranthum. 



Corolla-limb about 5 lin. broad . 5. D. Dortmanna. 



Inflorescence a panicle . . . 6. D. stacTiytarplie- 



toicles. 

 Pedicels 4-10 lin. long. 



Corolla S2)aringly pilose ; tube 3-4 lin. long 7. D. senegalense. 

 Corolla glabrous ; tube 7^ lin. long . . 8. D. nanum. 



Pedicels 2-3 in. long . . . . . . 9. D. angolense. 



1. D. luteum, Engl, in Engl. Jahrb. xxiii. 498. Stems slender, 

 erect, simple or once branched in the upper part, |— 1 ft. high ; inter- 

 nodes 1^-4 in. long. Radical and lower cauline leaves |~- 1 in. long, 

 2-3^ lin. broad, elliptic to linear-oblong, obtuse ; upper cauline leaves 

 scale-like, 1^-2 lin. long, ovate to suborbicular, acute or obtuse, connate 

 at the base. Inflorescence a terminal few-flowered raceme ; bracts 

 similar to the cauline leaves but smaller, in pairs 1|— 3 lin. apart; 

 pedicels 2-4|- lin. long. Calyx 2 lin. long, minutely and sparingly 

 pubescent ; teeth scarcely ^ nn - l° n g? broad, obtuse. Corolla bright 

 yellow ; tube 9-10 lin. long, about 1 lin. broad ; upper lip 4 lin. long, 



3 lin. broad, slightly emarginate ; lower lip tripartite ; lateral lobes 



4 lin. long, 3 lin. broad ; anticous lobe G lin. long, 9 lin. broad, deeply 

 emarginate. Stamens inserted just below the throat of the corolla- 

 tube ; anthers pubescent, coherent. Style 9 lin. long. Capsule sub- 

 globose, 2£ lin. long, 2 lin. broad. 



Nile Land. Bongo : Gir, Scliiveinfiirtlt, 2153 ! 



