OP ARTS AND SCIENCES. 165 



A. RiGiDUS. Not in the herbarium ; founded wholly on Grono- 

 vius, Fl. Virg. ; and Clayton's plant is identical with the preceding 

 specie3. 



A. LiNiFOLius and A. iiyssoi'ifolius, Mant. 114, both belonging to 

 Galatella, an Old World group, were erroneously referred to North 

 America (where nothing of the kind has been detected), and are to all 

 appearance mere varieties of A. acris, L. A. linifolius originated in 

 Hort. CliflT. No. 15, and there is a specimen in Cliffort's herbarium. 

 The synonym of Morison relates to something else, perhaps to A. tenu- 

 i/olius, L. ; the plant of Gronov. Fl. Virg. referred to is A. tenuifoUus, 

 L. So that the name linifolius completely subsides, at least as regards 

 the American flora. 



A. CONCOLOR. Two specimens, one from Kalm (" K "), and per- 

 haps the other also ; probably collected in New Jersey. 



A. UNDULATUS. Specimen from Kalm ; the form with some cine- 

 reous pubescence, extending even to the involucral bracts ; lower 

 part of the stem wanting ; pretty clearly the A. diversifolius of 

 Michaux, and not the A. patens. The character and good figure cited 

 from Hermann's Paradisus are a part of the foundation of the species ; 

 from his phrase, " foliis undulatis," Linnaeus took the specific name ; 

 and the figure is characteristic. 



A. Nov^-Angli^. The species is wholly clear, and comes down, 

 with its name, from Tournefort and Hermann. But in his herbarium 

 LinniEus had somehow confounded it with A. grandljlorus, and Smith 

 corrected the mistake. 



A. ERicoiDES. In the second edition of the Species Plantarum 

 this is brought next to A. dumosus. The specimen in the herbarium 

 from the Upsal Garden is an attenuated floriferous state of the re- 

 ceived species. But the Dillenian plant from which Linnoeus drew 

 the specific name, and also the plant of Clayton, the character of 

 which, by Gronovius, Linnaeus copied as that of his A. ericoides, are 

 A. multijlorus, Ait. Solander, therefore, ought to have continued the 

 name of ericoides for the Dillenian and Gronovian plant, unless he 

 could ascertain that the specimen in the Upsal Garden was in the 

 herbarium as early as the year 1753. That cannot be done. But the 

 two species must now continue as named and characterized in Ait. 

 Hort. Kew. 



A. CORDIFOLIUS. The species largely rests on the plants of Cor- 

 nuti and of Morison, both well figured, and the latter identified in his 

 herbarium. There is a specimen in the Liuna^an herbarium, unnamed 



