194 

 7.— DIDYMOOARPUS. 



Key to species of Didymocarpus and Chirita (No. 8). 



1. Leaves rotund, cordate or reniform ... 2. 

 Leaves round or narrowed at base ... 3. 



2. Galyx segments linear ... ..-. ... D. rotundifolia. 

 Calyx segments oblong 7. C. Dryas. 



3. Calyx ^-fid ... ... -.. ... 1. C. anachoreta 



Calyx more than f-fid ... ... ... 4. 



4. Corolla saccate at base ... ... 2. C7. sinensis. 



CoroUa tube cylLndric ... ... ... 5. 



5. Leaves gradually narrowed into petiole 6. 

 Leaves abruptly passing into petiole ... 10. 



6. Bracts small, linear ... ... ... 7. 



Bracts large, ovate, connate ... ... 3. C. ebumea. 



7. Leaves softly hairy on both sides ... 8. 

 Leaves hispid or subglabrous ... ... 9. 



8. Leaves quite entire ... ... ... D. demissa. 



Leaves crenulate ... ... ... 4. C. Juliax. 



9. Leaves oblong-lanceolate ... ... D. Hancei. 



Leaves ovate-spathulate ... ... D. Fordii. 



10. Leaves obtuse ... ... ... ... 11. 



Leaves acute ... ... ... ... 6. C. macrosiphon. 



11. Acaulescent plant ... ... ... 3. 



Plant with leafy stem ... ... ... 5. C. obtusa. 



1. D. rotundifolia, Hemsl. Enum. PI. China, ii. 230. North Eiver. 



Fl. purple or blue, July. 



2. D. demissa, Hance in Journ. Bot. 1883, 166. On rocks near 



Saingan on the Lienchow River. Fl. white, October. 



3. D. Hancei, Hemsl. Enum. PI. China, ii. 229. North Eiver, 



Fl. rose-hlac coloured, April. 



4. D. Fordii, Hemsl. 1. c. 229. North River. Fl. light violet, 



September. 



8. OHIRITA. 



For key to species see Didymocarpus (No. 7). 



1. C. anachoreta, Hance ; Maxim, in Mel. Biol. ix. 370. Rocky 



torrent banks. In rocky ground on the Lanfa Mt., 

 Hoifung ; near the Buddist temple Filoitz on the North 

 River ; Lofoushan 600 to 900 ft. Fl. pink, August. 



2. C. sinensis, Lindl. ; Benth. Fl. Hongk. 259. Common in 



damp places in ravines, Hongkong ; Lantao Island and 

 Maonshan, Hongkong New Territory ; Swatow ; North 

 River. Fl. lilac-coloured, all the year. 



3. C. eburnea, Hance in Journ. Bot. 1883, 168. Saingan on the 



Lienchow River. Fl. yellowish with reddish lines and 

 orange-coloured spots, October. 



4. C. Juliae, Hance 1. c. 168. Lienchow River. Fl. violet-blue, 



October, 



