1916) Blake,— Limonium in North America and Mexico 55 



been published by Wangerin, 1 who recognizes, in addition to the new 

 Statice Endlichiana from Tamaulipas, the first species of the genus 

 to be described from Mexico, six North American Species — S. angus- 

 tata ("Small" = Gray) Wangerin, S. brasiUemis Boiss. (not seen from 

 North America by Wangerin), S. caroliniana Walt., S. calif omica 

 Boiss., S. Nashii (Small) Wangerin, and S. limbata (Small) Wangerin. 

 Wangerin's discussion of the variation of these species, which is 

 accompanied by a key and brief synonymy, makes this a very impor- 

 tant contribution to the knowledge of the American species of the 

 genus. 



All the North American species are closely related to one another 

 and belong to the sect, Limonium § Genuinae of Boissier's revision. 

 The chief characters for specific discrimination are to be found in the 

 pubescence, size, and form of the calyx-tube, in the shape of its lobes, 

 the shape of the flowering bractlets, and the degree of aggregation 

 of the flowers. 



The generic name to be used for this genus in accordance with the 

 International Code of Nomenclature is at present in some dispute, 

 American authors using Limonium while English and Continental 

 authorities for the most part still adhere to the usage of Boissier, 

 applying Statice to the Sea Lavenders and using Armeria Willd. for 

 the Thrifts, basing their case on the clause of Art. 45 of the Inter- 

 national Rules which states that when a genus having no subdivision 

 which can be regarded as its type is divided into two, the original 

 name shall be retained for the segregate having the greater number 

 of species. T4ie history of the case in brief is as follows. The two 

 genera were distinguished in their modern acceptation by Tournefort 

 in 1700, and described and figured in his Institutiones (i. 341. t. 177). 

 Linnaeus united them in the Genera Plantarum (ed. 1. 88. no. 252 

 (1737); ed. 5. 135. no. 348 (1754)) under the name Statice, quoting 

 Limonium as a synonym, and remarking in his observations under 

 the genus "Statice authorum calyce communi triplici, florcm sub- 

 rotundum componit. Limonium authorum calyce communi imbncato 

 flosculos serie oblanga exhibit." Of the thirteen species of Statice 

 in the first edition of the Species (i. 274) one only, the first, is a Thrift, 

 the others Sea Lavenders. The first binomialist to separate them was 

 Miller, who in his Gardener's Dictionary ed. 8 (1768) returned to 



> Wangerin, Zeilschr. Naturw. Halle lxxxii. 401-145 (1911). 



