238 JOURNAL OF THE ARNOLD ARBORETUM [vol. v 



by which character it differs also from all other species of the genus known 

 to me. 



Mr 



Primus yedoensis var. perpendens Wilson, n. var. 



This variety though marked by long pendent branches is identical with 

 the type in flowers and foliage. It is growing on the estate oi 

 Fairchild, Chevy Chase, Maryland, having been imported from Japan. 

 It is a singularly attractive tree well worthy of wide cultivation. Probably 

 this is the u Yoshino-shidare zakura" of the Japanese. 



Wilson 



Henryana 



Camellia Henryana Cohen Stuart in Mededeel. Proefstat. Thee Buitenzorg, 

 xl. 132 (1916); in Bull. Jard. Bot. Buitenzorg, s6r. 3, I. 290, t. 30, fig. 15 

 (1919). 



hina : Yunnan, Szemao and Mengtze. 



Thea Pitardii, comb, no v. 



Thea speciosa Pitard apud Diels in Notes Bot. Gard. Edinb. v. 285 (1912) 

 Non Kochs. 



Camellia Pitardii Cohen Stuart in Mededeel. Proefstat. Thee Buitenzorg, 

 xl. 68 (1916); in Bull. Jard. Bot. Buitenzorg, s6r. 3, i. 240 (1919). 



China: Yunnan. 



Thea Crapnelliana, comb. nov. 



Camellia Crapnelliana Tutcher in Jour. Linn. Soc. xxxvu. 63 (1904). 



China: Hongkong. 



In his Thesis on the Tea plant Dr. Cohen Stuart (1. c. 57 [1916]; 232 

 [1919]) uniting as most botanists have done the two Linnaean genera 

 Camellia and Thea, chose the name Camellia for the genus because Sweet 

 in 1818 first united these two genera under Camellia and according to 

 art. 46 of the International Rules of Botanical Nomenclature the name 

 selected by the author who first unites two or more genera of the same 

 date has to be accepted. In this case, the two names, however, though 

 they both date from 1753, were not published at the same time, for Thea 

 appeared on page 515 of vol. I. of Linnaeus' Species plantarum, while 

 Camellia was published on p. 698 of vol. II. of the same work. As B. D. 

 Jackson in a note on Linnaeus' Species plantarum (in Jour. Bot. LXI. 174 

 [1923]) shows conclusively, the two volumes were not published at the 

 same date, but the first volume came out in May, 1753, while the second 

 volume did not appear until August of the same year, therefore Thea has 

 clearly the priority of Camellia. Dr. Cohen Stuart, when I drew his 

 attention to B. D. Jackson's article and the inference to be drawn from 

 it regarding the nomenclatorial question in the case of Camellia and Thea, 

 agreed that it showed conclusively the priority of the name Thea and 

 asked me to transfer those species of Camellia enumerated in his paper 

 which had not yet received a binominal combination under Thea. This 

 has been done above. Of the species enumerated by him without a com- 



