Dunn— A Key to the Labiatae of China. 141 



11,000 ft., Forrest, 597 ; eastern flank of Lichiang range, 9000- 

 10,000 ft., Forrest, 6345 ; Tung valley, Wilson, 4387-88. 



12. Plectranthus excisus, ,Maxim. ; Mel. Biol, ix, 423. 

 P. racemosus* Hemsl. in Journ. Linn. Soc. xxvi, 273. 



. Flowers yellow, red, or purple, July to October. Ditches. 



Szechuen : N. Wu-shan, Henry, 7049, Wilson, 4385 ; 

 S. Wu-shan: Henry, 4855 ; Chang-yang, Wilson, 1682A. ' 



Hupeh: Fang, Wilson, 2382, 2513, 2582, Henry, 6695, 

 Patung, Henry, 2463, 7233 ; Tien-pong-scian at 1990 m., 

 Silvestri, 2080 ; Ichang, Henry, 417. 



13. Plectranthus rubescens, Hemsl. in Journ. Linn. Soc. xxvi, 



273- 

 P. dichromophyllus, Diels in Engl. Jahrb. xxix, 562. 

 Flowers purple, August to October. Banks of streams. 

 Hupeh : Ichang, Henry, 974 (type). 



Szechuen : W. China at 5000 ft., Wilson, 4375 ; Nan- 

 chuan, Rosthorn, 1164 ; Lung-mo-ai, Rosthorn, 861. 



14. Plectranthus phyllopodus, Diels in Notes Bot. Gard. Edin. 



xxv, 227. 



P. leucanthus,-f Diels in Notes Bot. Gard. Edin. xxv, 230. 



Flowers blue or white, May to September. Mountain 

 meadows and borders of pine forests. 



Yunnan : eastern flank of Tali range at 8000-11,000 ft., 

 Forrest, 4555~56 ; hills of Yangtze-Mekong divide, 6000- 

 10,000 ft., Forrest, 595. 



15. Plectranthus Henryi, Hemsl. in Journ. Linn. Soc. xxvi, 271. 

 Flowers white with mauve dots. 



Hupeh : Ichang, Henry, 2727, 2763, 3086, 3094. 



in Notes Bot. Gard. 



Flowers lavender-coloured, September and October. Sandy 

 wastes. 



Szechuen : Mt. Omi, October 1904, Wilson, 5125. 



Yunnan : Valley of Yangtse, between Chi-tien and Chin-ho, 

 elevation of 6000-7000 ft., October 1904, Forrest, 587 ; near 

 Yunnan-sen, M aire, 1599, 202 4> 20 4° ; sandy wastes on mountains 



* P. racemosus, Hemsl.: see note in Notes Bot. Gard. Edin. xxxvii, 158. 

 This form is confined to C. China and can onh U< .li-tinmn- 1 from P. excisus, 



Diels: the onh 



