2 THE BRITISH WILLOWS 



kins, often oval or even subglobose at first, elongate by degrees, 

 and are usually at length cylindric. The bracts of many species, 

 almost concolorous in the earliest stage, are tipped or rimmed 

 with blackish-brown at maturity. The relative length of the 

 pedicel and nectary is an important character, but very liable to 

 be misjudged and consequently undervalued ; it should be observed 

 that, while the nectary is full-grown from the first, the pedicel of 

 species with pedicelled ovaries goes on lengthening till maturity, 

 and the two organs may be, to begin with, of equal length, and 

 eventually in the proportion of 3-5 to 1 ; the description is, of 

 course, taken from the later stage. Of late some doubt has been 

 thrown on the value of this character in the determination of 

 hybrids. I can only say that I have found the proportion of 

 pedicel and nectary very fairly constant in the same species, and 

 in the case of hybrids always (with one or two exceptions) between 

 the limits of their range in the two parent species, and a very 

 useful corroborative character in the determination of plants whose 

 hybrid origin was suspected on other grounds. 



The following is a list of the works, books and exsiccata, most 

 frequently quoted, with the abbreviations by which they are 

 referred to : — 



Books. 



Anderss. Sal. Lapp. = N. J. Andersson, Salices Lapponicse 



(1845). 

 Anderss. Monogr. = N. J. Andersson, Monographia Salicum 



(1867). 

 Anderss. DC. Prodr. xvi. (2) = in De Candolle's Prodromus, 



vol. xvi. part 2 (1868). 

 Camus Monogr. = Classification des Saules d'Europe et 



Monographie des Saules de France (1904), by A. & E.-G. 



Camus. 

 Camus Atlas = Atlas to the same work. 

 Doell = Doell, Flora von Baden (1859). 

 E. Bot. = J. E. Smith, English Botany (1790-1814). 

 E. B. S. = Supplement to English Botany (1831, &c). 

 Fl. Dan. = Flora Danica (1761, &c). 

 Forbes = Salictum Woburnense, by James Forbes (1829). 

 Gren. & Godr. = Grenier &Godron, Flore de France (1846-56). 

 Hartman = Hartman, C. J., Handbok i Skandinaviens Flora 



(ed. 3, Stockholm), ed. 11 (1879). 

 Hoffmann = Hoffmann, Historia Salicum (1785-91). 

 Koch Syn. = Koch, Synopsis Florae Germ, et Helv. (ed. 2, 



1843). 

 L. Sp. PI. = Linnaei Species Plantarum, ed. 1 (1753). 

 Ray Syn. = Raii Synopsis Stirpium Brit. (ed. 2, 1696, the 



most accurate), ed. 3, 1724. 

 Seemen = O. v. Seemen in Ascherson und Graebner, Synopsis 



Mitteleurop. Flor. vol. iv. (1908-09). 

 Scringe = N. C. Seringe, Essai dune Monographie des Saules 



de la Suisse (Berne, 1815). 



