﻿VE MACROACANTHA AXD ALLIED EUAGAVES. 215 



^ A. rubescens, listed by Salm* and described by him in 1834 

 immediately following what he at first called A. punctata but 

 atterwards considered to be the same as rubescens, has had its 

 synonymy complicated because of its original distribution 

 from the Munich Garden under the name A. flaccida, which 

 was discarded by Salm because of the earlier use of this name 

 for something else by Plaworth.f The same name was sul> 

 sequently applied by JacobiJ to a still different plant. It 

 IS listed by Otto in 1842 and Roemer in 1847, and included 

 in Kunth s enumeration of 1850. Salm in 1859, Koch in 1860 

 and Jacobi in 1865 redescribed it, the first certainly from 

 authentic specimens. Jacobi, ignoring Salm's original indi- 

 cation that it is Mexican, questions its nativity. Apparently 

 through a typographical error for this, the name erubescem 

 appears m EUemeet's list of his Agaves in 1871, and has been 

 repeated a few times. Mr. Baker, in 1877, at first§ suggested 

 the possible identity of rubescens with the flaccida of Jacobi, 

 which, as has been said, was something entirely different but 

 laterjl admitted it as a species. He was followed in his'first 

 erroneous suggestion by Terracciano (p. 38). There is no 

 indication that any writer since Jacobi has seen authentic 

 rubescens, and it may be that even he did not see it. 

 _ The equivalent name A. flaccida of the Munich Garden 

 IS properly treated as a synonym (after its introduction as 

 such by Salm in 1834) by Kunth in 1850, Salm in 1859 and 

 Koch in 1860. Other uses of this name, as has been said, 

 pertain to quite different plants— whatever they may have 

 been— so called in the first place respectively by Haworth 

 and Jacobi. 



A. serrulata, which had been listed (ascribed to Karwin^ki) 

 b3^o in 1842 and Roemer in 1847, was repeated as a bare 

 * Salm Dyck, Hortus Dyckensis. 8, 306. 



