146 Dunn— A Key to the Labiatae of China. 



2. Flowers black when dry ; lower calyx teeth 



3- Flower nearly twice as long as calyx . . 2 . fraternUi 



Flower only slightly longer than the calyx . . q. nierescem 



r only slightly longer than the calyx 

 Calyx nearly glabrous ; hairy part of filament 



exserted . 



Calyx hairy ; hairy part of fiiament included ' 5 Che 



K U t }, 



1. Pogostemon Dielsianus, Dunn in Notes Bot. Gard. Edin 

 xxxvii, 159. 

 Flowers rose, November. In scrub on drv rockv 



2. Pogostemon fraternus, Miq. ; Fl. Brit. Ind. iv, 635. 



Flowers red. Damp sandy ground. 



Yunnan : Szemao forest at 4600 ft., Henry, 11,699. 



3. Pogostemon nigrescens, Dunn in Notes Bot. Gard Edin 



xxxvii, 159. 

 Flowers red or purple. Shady woods. 



Yunnan: Mengtze, Henry, 9082; Feng-chen-lin, Henry, 

 1I » I 74 ; Szemao, Henry, 12,563. 



4- Pogostemon glaber, Benth. ; Fl. Brit. Ind. iv, 633. 

 Flowers white tinged with pink. Woods 



Yunnan: Mengtze, Henry, 10,418, 11,487 ; Szemao at 

 4500-5000 ft., Henry, 12^832. -^-J- > ^emaoat 



5- Pogostemon Championi, Prain in Kew Bull. 1908, 254. 

 Flowers pale purple. 



^tr m fl Hongk ° ng - 275 (n ° n aiibi) - 



knn^N ANG T UNG / H< ^°^ Champion, 339 ; Ha-hang, Hong- 

 kong New Territory, Wong Kei ; Lienchow River, Matthew. 



13- Dysophylla, Blume ; Fl. Brit. Ind. iv, 637. 



1. Leaves opposite 



Leaves verticillate . .' ' ' I- auncu ^na. 



2. Stem and leaves hirsute 



Stem and leaves glabrous or nearly so .' ' 2 ' crucmta - 



