130 Dunn— A Key to the Labiatae of China. 



botanical establishments in the world. The centre of the 

 province was known first from the collections of Delavay and 

 the writings of Franchet at the Jardin des Plantes, Paris ; the 

 south from Henry's collections and the labours of Kew botanists, 

 still in progress ; the north from Forrest's explorations and the 

 publications of the Edinburgh Botanic Garden. The romantic 

 and adventurous journeys of the latter collector will, it is to be 

 hoped, be described some day in book form, and they might 

 make one of the most attractive narratives of botanical enter- 

 prise in China. Next to Yunnan, perhaps Szechuen is the best 

 known from the writings and collections of Wilson, and especially 

 from the Plantae Wilsonianae published by the Arnold Arbore- 

 tum. Kwangtung, though less fortunate in its failure to attract 

 horticultural collectors and in the absence of very large exhaustive 

 collections in European herbaria, has had many earnest botanical 

 students from the earliest times of European immigration. 

 The collections of Hance and Ford, and in more recent times 

 Matthew, Tutcher, and the writer, have been examined and 

 described at different times and in many publications. But 

 the province has the unique advantage of a complete descriptive 

 flora {Flora of Kwangtung, by Dunn and Tutcher), and of a 

 botanical establishment and fine herbarium at Hongkong. 

 These three provinces have already been proved to have large 

 endemic lists, and these are not likely to be greatly reduced. In 

 a smaller degree the same may be said of the less explored 

 regions ; and when the mapping out of botanical regions comes 

 to be undertaken, the existence of many specialised internal 

 areas will doubtless be recognised. 



KEY TO GENERA. 



Lower or horizontal lip or (when subregular) 

 Lower or the erect lip 3-lobed . ' 



Flowers in globular heads . 

 [•"lowers in oblong or linear spike; 



