196 SALIX FRAGILIS, S. RUSSELLIANA, AND S. VIRIDIS. 



C. cornigerum Crn. Guadeloupe, Maze ! 



C. chilense Crn. Guadeloupe, Maze ! 



C. lanciferum Kiitz. Danish West Indian Islands, Hohenack. ! 



Meeralgen, 539. 

 Centroceras clavulatum Ag. Grenada, Murray ! Guadeloupe, 



Maze ! St. Thomas, A. R. Young ! Cuba, Hb. Montague ! 



Florida, Harvey ! Melvill ! Bermuda, Rein, ' Challenger' ! 

 Var. cryptacanthum Crn. Guadeloupe, Maze ! Danish West 



1 Challenger 1 I 



Hohenack 



Islands, Hohenack. ! Meeralgen, 443. 



West 



Var." hyalacanthum Cm. Guadeloupe, itfa££ ! Danish West Indian 

 Islands, Hohenack. I Meeralgen, 537. 



Var. micranthum Kiitz. There is a specimen in Herb. Mus. Brit, 

 on which is written, " Ipse, Ins. Ind. occid. Dan.'' I do not 

 recognise the identity of "Ipse" from the handwriting. 



Var. oxyacanthum Crn. Guadeloupe, Maze ! 



Var. brachyacanthum Crn. Guadeloupe, Maze ! 



Var. crispulum Mont. Florida, Harvey, Melvill ! 



Geogr. Distr. Throughout all tropical and subtropical seas. 



(To be continued.) 



SALIX FRAGILIS, S. RUSSELLIANA, AND S. VIRIDIS. 



By F. Buchanan White, M.D., F.L.S. 



The question of the relation which Smith's Salix Russelliana 

 bears to S.fragilis L., is one that has much exercised the minds of 

 salicologists, both British and foreign. 



selliana as a species distinct from 8. Jragilis, since I am not able 

 to refer to all the editions of the various handbooks ; and though 

 the point is of interest it is not a vital one. In the 4th edition 

 (1838) of Hooker's 'British Flora'— of special value as including 

 the opinion of Borrer 



/' 



as distinct. So also in the 1st edition (1843) of Professor Babing- 

 ton's 'Manual'; in the 6th edition Uusselliana being reduced to 

 varietal rank, as it also is by Walker-Arnott in the 8th edition 

 { 1860) of Hooker & Arnott's ■ British Flora.' In the 3rd edition 

 (1873) of 'English Botany,' Boswell Hyme makes a new departure, 

 and refers 8. RusseUi«na to 8. viridis Fr., saying tha* " »* «mnears 

 to be one of the series of hybrids between 8. ,/' 

 alba, as was pointed out by Dr. Andersson," and tha.u ^- ~- 

 be no doubt, however, that if this be the case 8. Umselliana Smith 

 is a departure from Fries' 8. viridis, in the direction of S. fraijilis. 

 Finally in the « Student's Flora' (1884), it is stated that S. llussel- 

 linnn " is nnncirl oro/i a inrk>.;j u^+T^on t'nitiifis and alba, and referred 



8. 



and thaf " there can 



liana 



to S. viridis Fries. 



and that Fries' 6 T . tvWrfw is not a British plant. 



'■ ,, 



