CLASSIFICATION 29 
Baker (Journ. Bot. xxxix. 1901); the former system will be con- 
sidered only in so far as it relates to British plants. 
It must be noted in the first place that MM. Rouy & Foucaud 
use the term “forme” with a special signification. Writing of 
this term they remark (vol. i., introduction, p. xi) :—‘‘ La forme .. . 
nous considérons ici comme synonyme de la race en horticulture, 
et non comme une simple variation ou modification peu importante 
du type spécifique, due & des changements dans les conditions 
ordinaires de la vie de la plante, ce qui-constitue alors le variété. 
Nous estimons done la forme d’un degré supérieur dans |’échelle 
de la classification & la variété. ...” 
forme is completely made up by its varieties or segregates. Their 
system, in so far as it concerns British plants, may be summarized 
in the following table :— 
VIouA TRICOLOR IL. 
oe ) 
Forme (aggregate) V. Kitaibeliana Roem. et Schultes. 
B (segregate) derelicta Jord. (pro sp.). 
y (segrega a DC. ie 
Subspecies (aggregate) V. Curtisit Forst. (pro sp-). 
a (segregate) genwina Rouy & Foucaud. 
y (se 
Subspecies (aggregate) V. lutea Huds. 
preemie unguiculata Rouy & Foucaud. 
s. var. violacea Ro 
s. var. lutea Rou A Neco 
create) multicaulis Koch. : | 
(In fi -aibontien in this list I have followed Rouy & 
Foucaud.) - @ : 
As we have already seen, “ forme hortensis DC.” is merely the 
den P; ; pal ser Saad 
ae The saaragale V. saxatilis (Schmidt) is. defined thus: “ Différe 
du V. hortensis par sa corolle plus petite, non tricolore, & pétales 
