226 PROCEEDINGS OF THE AMERICAN ACADEMY. 



growing at Chico, Cal. Little, however, can be said at present 

 about the affinity of these pears, as the material is too insufficient; 

 the leaves are apparently from the tips of young shoots and do not 

 show the characteristic form of normal leaves, and most of the photo- 

 graphs fail to exhibit the important character of the persistent or 

 deciduous calyx. We shall have to wait until these plants flower and 

 fruit before we can attempt their classification. 



The following Conspectus includes all the species hitherto known 

 from China proper. Several of these species occur also outside of the 

 limits of China; Pyrus ussuriensis ranges into Amurland, P. Calleryana 

 into Korea and Central Japan, P. Koehnei into Formosa and P. 

 pashia into the Himalayas. Besides these there occur in central and 

 eastern Asia three species which are not found in China, though 

 closely related to Chinese species; these are P. Fauriei Schneider in 

 Korea, P. Uyematsuana Makino in central Japan, and P. Jaque- 

 montiana Decaisne in the western Himalayas. All these are mentioned 

 and briefly characterized in the following Enumeration under the 

 species to which they are most nearly related. Another group of 

 about nine species extends from Turkestan through Persia and Asia 

 Minor into southern and western Europe and into northern Africa, but 

 as none of them seems to be very closely related to any of the Chinese 

 species, they do not concern us here. There is no true Pyrus in the 

 southern hemisphere nor on the American continent. 



CONSPECTUS SPECIERUM SINENSIUM. 



Calyx persistens. 



Folia argute setoso-serrata. 



Pomum breviter pedicellatum, subglobosum: folia orbiculari- 

 ovata vel ovata, ut inflorescentia ab initio glabra. 



1. P. ussuriensis. 



Pomum longe pedicellatum, ovatum; folia oblongo-ovata v. 



ovata ut inflorescentia ab initio plus minusve floccoso-tomen- 



tosa 2. P. ovoidea. 



Folia denticulata v. dentata dentibus non setoso-acuminatis : 



pomum longe pedicellatum, ovale 3. P. Lindleyi. 



Calyx deciduus. 

 Folia setoso-serrata. 



Basis foliorum late cuneata: pomum flavum. 



4. P. Brctschneideri. 



