26. HALORAGIACEA, 513 
Cnothera biennis, Linn. 
Provinces 1284567-91011-1314 15. 
Alien. Cyb. i. 375. Introduced from America. Now seen occa- 
sionally in abundance on waste spots where the ground is sandy, 
both on the coast and inland. 
Ginothera odorata, Jacq. 
Provinces 1-8. Devon. Somerset. Middlesex. 
Casual, (CE. pumila, Linn. is mentioned in Middlesex flo.) 
Circea (alpina) intermedia, Ehrh. 
Provinces ----5-78910?121381415 16. Partly errors? 
Syn. 378. Cyb.i. 377. Eng. bot. iv. 29. This is made up from 
specimens which are more or less dubious between alpina and 
lutetiana. Several examples received from Continental botanists, 
labelled as the intermedia of Ehrhart, best unite with alpina. The 
same usually holds true with the specimens so labelled by English 
botanists; although some of the latter extend their ideas of inter- 
media to examples which would be assigned to lutetiana by myself. 
TI am unable to trace any satisfactory line of severance between 
alpina and intermedia. In the garden, alpina and lutetiana remain 
conspicuously dissimilar through many years. 
26. HatoraciacEs. 
Myriophyllum (verticillatum) pectinatum, DC. 
Provinces -- 845, etc. Nearly through England? 
Syn. 380. According to English Botany this and the type form 
(‘genuinum” with longer, more leaf-like, bracts) are “ about 
equally common”; and the two varieties “pass insensibly into 
each other.” Is there not something unsound or inconsistent 
implied in these two admissions? ‘To take the two contrary 
extremes of a series,—to name one as the type, and the other as 
the aberrant variety,—and so virtually to ignore all the inter- 
mediate forms, which constitute the insensible gradation between 
them, while thus dividing the aggregate into its two extremes? 
The intermediate should rather be the true type of the species; 
unless in those cases where one extreme is the usual or prevalent 
form, and the other only an occasional departure from it, which 
cannot be declared the case when the two are “about equally 
common.” 
Ceratophyllum (aquaticum) submersum, Linn. 
Provinces 12845--8-[10---14]. Localities uncertain. 
Syn. 387. Cyb. i. 882. iii. 430. Eng. bot. iv. 124. Connected 
with demersum by the intermediate apiculatum? But the latter 
has not been found certainly in England. 
