Myrtaceae 



In connection with the studies of Dr. L. M. Perry and myself* on 

 certain Old World species of Eugenia, \ve hâve segregated from Eugcnia 

 Linnaeus sensu latiorc the gênera Clcistocalyx Blume, Acmena DC, and 

 Syzygium Gaertn. concluding that most of the fifty-five species that 

 Gagnepain placed in Eugcnia in his treatment of the Myrtaceae in 



* Merrill, E. D. & Perry, L. M. A synopsis of Acmena DC, a valid genus of 

 the Myrtaceae. Jour. Arnold Arb. 19: 1-20. 1938. 



The Myrtaceae of China, op. cit. 19 : 191-247. 1938. 



Reinstatement and revision of Cleistocalyx Blume (including Acicalyptus 



A. Gray) a valid genus of the Myrtaceae. Jour. Arnold Arb. 18:322-343. /. 21S. 

 1937. 



The mvrtaceous genus Syzygium Gaertner in Bornéo. Mem. .\m. .^cad. 



Arts Sci. 18: 135-202. Repr. Mem. Gray Herb. 4: 135-202. 1939. 



1940] iMERRlLL, RECORDS OF INDOCHINESE PLANTS, II 379 



Lecomte's Flore Générale de l'Indo-Chine 2: 788-864. 1920-21, properly 

 belong in Syzygium. In our paper on the Indo-Chinese species of 

 Syzygium* we transferred most of thèse from Eugenia to Syzygium, add- 

 ing eight new species, 5. Pctclotii JMerr. & Perr., 5. sterrophyllum Merf. 

 & Perr. (Eugenia fluviatilis sensu Gagnep., non Hemsl.), 5. szemaoense 

 MevT. & Perr., S. vestitum Merr. & Perr., 5. touranense Merr. & Perr., 

 5. imitans Merr. & Perr., S. crassijoUum Merr. & Perr., and S. stictanthum 

 Merr. & Perr. 



In accepting the generic name Syzygium Gaertn. for most of the Old 

 \\'orld species hitherto placed in Eugenia, various spécifie names of 

 Indo-Chinese species had to be changed, while at the same time a few 

 réductions were made. Thèse changes are summarized as follows: 

 Eugenia Millettiana sensu Gagnep., non Hemsl. = Syzygium Levinei 

 (Merr.) Merr. & Perr., Eugenia javanica Lam. =: Syzygium samaran- 

 gcnse (Blume) Merr. & Perr., Eugenia Jambolana Lam. = Syzygium 

 Cumini (Linn.) Skeels, Eugenia resinosa Gagnep. = Syzygium poly- 

 anthum (Wight) \Va\p., Eugenia longiflora F.-Vill. := Syzygium lineatum 

 (DC.) Merr. & Perr., Eugenia cymosa sensu Gagnep., non Lam. = 

 Syzygium syzygioides (Miq.) Merr. & Perr., Eugenia brachyata sensu 

 Gagnep. non Roxb. =^ Syzygium cinereum Wall., and Eugenia Deckeri 

 Gagnep. = Syzygium. odoratum (Lour.) Merr. & Perr. 



To the list of Indo-Chinese species the following previously described 

 species were added: Syzygium buxijolium Hook. & Arn., 5. irregulare 

 (Craib) Merr. & Perr., and S. corticosum (Lour.) Merr. & Perr. 

 Eugenia circumscissa Gagnep. we believe to represent an undescribed 

 generic type, but more ample collections are needed. 



No représentative of Acmena is as yet reported from Indo-China, 

 although Acmena acuminatissima ( Blume) Merr. & Perr. probably occurs 

 there. Clcistocalyx is represented by three species, C. retinervius Merr. & 

 Perr. Jour, .'^imnld Arb. 18:334. t. 215, /. 12-15. 1937, C. nigrans 

 (Gagnep.) Merr. & Perr. (Eugenia nigrans Gagnep.), and C. operculatus 

 (Roxb.) Merr. & Perr. (Eugenia operculata Roxb.). 



