EUPHRASIA MINIMA | 167 
E. micrantha Schur, Enum. Pl. Transs. p. 510 (1866 
E. minima, forma bicolor and forma paliae Grom Excurs. 
FI. ed. 4, P. 324-5 (188 
#. one forma E. minima T. Caruel, Fl. Ital. vi. p. 472 
g. 1885). 
#. oer balks Freyn in A. Kerner, Sched. Fl. Austro-Hung. iv. 
p. 55 (1886). 
EH. minima, forma flava, and var. subaristata Gremli, sien 
Beitr. Fl. Schweiz, iv. i 26 (1887 
E. minima forma alba Favr. in Gremli, Neue Beitr. iv. p. 26 
(1887) ; Wettst. lc. p. 159, tab. viii. fig. 14. 
E. minima var. hispidula Favr. in Gremli, Neue Beitr. iv. 
. 26 are Wettst. J.c. p. 161, tab. iv. figs. 239-243, 
tab, vi g. 12. 
E. sipitulate var. glabra Towns. in Journ. Bot. 1890, p. 165. © 
E. pe oetagi var. eglandulosa Towns. apud Wettst. 1. c. p. 153 
(1896 
EE. minima Aataory a purpurascens Wettst. l.c. p. 159. 
E. m Schleicheri Wettst. l.c. p. 161, tab. iv: figs. 
293. ‘238, 24d 248, 255, tab. viii. figs. 11, 13. 
E. minima vax. elatior Favrat apud Wettst. J. c. p. “162. 
E. minima var. maxima Schroéter apud Wetitst. 1. c. p. 162. 
The species is native principally in mountainous and alpine 
places, and is widely distributed,. extending to such habitats in 
central and southern Europe; for instance, in the Pyrenees, the 
South of France, the Alps, the Carpathians, the Apennines, and 
the Balkan Peninsula; moreover, in Norway, Sweden, and Lap- 
land ; also outlying stations in Asia Minor. 
Mr. F.N. Williams informs me’ that the specimen | of ig caine 
officinarumin Bauhin’s} 
heet of specimens from Jacquin’s herbarium is in the 
National Herbarium in Cromwell Road, written up in his hand- 
writing :—* Euphrasia alpina, parva, luteis floribus. Bauh: pin: 
233. Huphrasia minima lutea. Bocce. Mus: piante. 2. tab. 60. 
an varietas officina 
ettstein, in = volhbuenli rR of the genus Huphrasia, 
quoted above, states that EZ. minima belongs to so most difficult 
and multiform ineeieia's and is isha fore by many botanists not 
rightly understood. He admitted that he himself was obliged for 
five years to study the plant in different habitats and coun 
before he clearly comprehended it. The difficulty consists in ths 
fact that it varies very greatly according to the altitude of the 
d 
also fluctuate considerably ; and the small size of the pant vata 
herbarium-material to be often unsatisfactory for u 
‘The height of re stem ranges from 0°5 cm. in snowy habitats 
to 25 cm. on rich soils and in the more southern regio ons. 
In ‘this, as well as in some other species, it appears, after 
careful investigations, “that differences in anatomical structure wot 
be much greater than those attributed to distinct species. 
