SAGINA SAGINOIDES 



61 



Lagerheim loc. cit. ; S. glabra var. scotica Druce in New Phyt. 

 X. 325 (1911) ! ; S. scotica Druce in Bot. Exch. Club Brit. Rep. 

 for 1911, iii. 14 (1912) ! ; S. procwnbens x sagino'ides Ostenfeld in 

 New Phyt. xi. 117 (1912) !, ? excl. syn. Briigger ; Lindman in Bot. 

 Notiser. 267, et fig. (1913) !, ? excl, syn. Briigger ; x S. media 

 Briigger [loc. cit.] emend. Lindman oj;. cit. p. 273. 



Icones : — Reichenbach oj). cit. t. 4962, as Spergella sagino'ides. 



Exsiccata : — Billot, 1423 (partim), as Sagina linncei ; Reichen- 

 bach, 1095, as Spergella sagino'ides ; Schultz et Winter, i. 21, as 

 Sagina linnai. 



In citing Billot's No. 1423 (as exemplified in Herb. Univ. 

 Cantab.) under both varieties, I am casting no reflection on his 

 perspicacity. I think it is quite probable that he deliberately in- 

 tended in these specimens to indicate his view of the species Sagina 

 sagino'ides ; and, if this is really so, it only remains for me to add 

 that I follow Billot (as well as Smith and Beck and probably 

 Presl) in my concept of the species in question. 



The distinguishing characters of the two British varieties of 

 Sagina sagino'ides are tabulated below. These characters are 

 taken from fresh specimens grown in my garden originally from 

 Ben Lawers, from fresh material growing on the same mountain, 

 and from Lindman's excellent description [op. cit.). It is well to 

 add that, as yet, cultivation of my own garden specimens has 

 induced no alteration worth mentioning in the characters of 

 either variety, and that Lindman (p. 272) seems to have detected 

 no differences in Scandinavian material which had been in 

 cultivation for fifteen years. 



S. sagino'ides var. typica. 



Habit 



Less robust and more strag- 

 gling. Vegetative propagation 

 by axillary buds or shoots 

 more pronounced. 

 Barren rosettes 



More numerous, but indi- 

 vidually smaller. Leaves short- 

 er (up to about 1-8-2-0 cm. 

 long). 

 Pedicels 



More slender. 

 Floivers 



First flowers mostly tetra- 

 merous. Later flowers mostly 

 pentamerous. Latest flowers 

 mostly tetramerous.''' 



S. sagino'ides var. jnacrocarpa. 



More robust and less strag- 

 gling. Vegetative propagation 

 less pronounced. 



Less numerous, but indi- 

 vidually larger. Leaves longer 

 (up to about 2-5 cm. long). 



Less slender. 



Usually pentamerous, very 

 rarely tetramerous.''' 



* In this connection, it should be mentioned that S. procumhens is some- 

 times pentamerous even when growing in lowland localities where any form of 

 S. sagino'ides is unknown. 



