217 



ANTENNARIA DIOICA var. HYPERBOREA Cand. 



By Frederic N. Williams, F.L.S. 



(Plate 423.) 



If British specimens of Ante^inaria dioica are compared with 

 a series of continental forms referred to the species, it will be 

 seen that all the European forms may be grouped in three varieties, 

 inclusive of tlie type ; and that tbough intermediate forms may 

 seem to occur, the length of the calathial stalks, the breadth 

 of the basilar leaves, and the degree of pubescence on both 

 surfaces of the leaves, sufhciently characterize the variety to 

 which individual specimens may be referred. This paper is based 

 on a critical examination of the material in Herb. Kew. and Herb. 

 Mus. Brit. 



That S. F. Gray was the first to describe and refer to its proper 

 species the variety hyperburea has been generally overlooked in 

 British floras and plant-lists; though, as the synonymy given 

 further on will show, he cannot be quoted as the authority, on 

 account of his unfortunate rejection of the jejune Linnean name in 

 favour of the earlier trivial name used by Bauhin and Erndtel. 



The grouping of the synonyms under each of the three varieties 

 will best give their history in a concise form : — 



Antennaria dioica Gaertn. Fruct. Sem. Plaint, ii. p. 410, t. 167, 

 f. 3 (1791). 

 Var. a, TYPicA. 



Syn. — PiloseUa minur FvLGha. Hist. Plant, p. 60H (1542): Dodoens, 



Pempt. t. 68. 

 (j-naphailnm uiontanum Bauhin, Pinax, p. 263 (1623) ; Erndtel, 



Viridarium Warsawiense, p. 53 (1730). 

 Chrysocoma humilis )iw)itaua Morison, Hist. iii. p. 89 (1699). 

 Gnaphalium dioicum L. Sp. PL p. 850 (1753). 

 Gnaphalium dioiecium Hill, Herb. Brit. i. p. 36 (1756). 

 Elichrysum vioutcmum Seguier, PL Veronens. suppl. p. 260 



(1754). 

 Antennaria niuiitana 8. F. Gray, Nat. Arr. Brit. PL ii. p. 458 



(1821). 

 Gnaphalium alpimun C. A. Mey., Verz. PHanz. (1831). 



Var. /5 hyperborea Cand. Prodr. vi. p. 270 (1837). Specimina 

 majora. Rhizoma crassius, stolonibus brevius radicantibus. Folia 

 aut utrinque lanata, aut subtus lanata supra subaraneoso-pubes- 

 centia, tomento utrinque persistente (foliis adultis facie superiore 

 interdum subglabrescentibus) ; basilaria latiora obovato-spathulata 

 patentiora. Periclinii squamae latiores obovat^e magis obtusae. 

 Calathia brevius pedicellata, in capitulum corymbosum simplex 

 disposita. 



Journal or Botany. — Vol. 39. [July, 1901.] R 



