A Key to the Labiatae of China. 



STEPHEN TROYTE DUNN, B.A., F.L.S., F.R.G.S., 



Formerly Superintendent of the Botanical and Forestry Depart- 

 ment, Hongkong, China. 



The following keys to the genera and species of the Labiate 

 plants of China proper, and the enumeration of the species 

 which accompanies them, were drawn up from the splendid mass 

 of material assembled at Kew from the chief herbaria of the 

 Old World, under the circumstances mentioned in my preliminary 

 paper in this periodical (xxxvii, 154), published two years ago. 

 The characters and localities mentioned are taken from the 

 actual specimens seen, and it has been possible to compare 

 most of them with their original types. The only large collec- 

 tion consulted since the above paper was written has been the 

 Labiates of the Hongkong herbarium, kindly entrusted to me 

 by my friend and successor, Mr. W. J. Tutcher, Superintendent 

 of the Botanical and Forestry Department of that important 

 Crown Colony, which Sir Joseph Hooker once referred to in an 

 official memorandum as the key to the botanical position 

 with respect to China. 



The keys have throughout been constructed on practical 

 lines, and are based as far as possible on characters easily 

 observable without minute examination. The enumeration on 

 the same principle contains references only to the clearest and 

 most readily accessible descriptions of the genera and species. 

 These are followed in each case by the colour of the flowers, 

 months of flowering, and natural habitat whenever the informa- 

 tion has been obtained. A list of the specimens seen from each 

 province follows, the collectors' numbers being added for the 

 convenience of students in herbaria not annotated by the 

 writer. A classified list of determinations of plants numbered 

 by the different collectors is appended to the paper. 



My object in selecting the Labiatae out of all the families 

 represented in the Chinese flora to examine at this time was 

 to test whether botanical exploration had proceeded far enough 

 to make possible the study of the phytogeographical division 

 of the empire. For these attractive and easily preserved plants 



[Notes, R.B.G., Edin., No. XXVIII, May 1915.] A 



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