302 NEW PUBLICATIONS. 
“ Matricaria maritima, L. The numerous observations which I have 
made both upon the coast and in the Polder tract, have led me to 
think that this is not essentially distinct from M. inodora, but is only 
a variety due to the influence of chloride of sodium. On the coast, or 
where the soil is strong amongst the Polders, it assumes well-marke 
characters, but by degrees, as we advance into the interior, we see 
them disappear. Already Mr. Lloyd has obtained from seed one from 
the other in a single year. His results have been disputed, but I be- 
lieve that if they were renewed their exactness would be confirmed. 
For the rest, the characters of M. maritima are not constant, for I have 
seen it with capitula not depressed at the base, with receptacle appreci- 
ably longer than broad, and with glands at first orbicular and afterwards 
oval. In both forms the two glands, which are found under the summit 
of the achenium on the outerside are prominent in the living plant, but 
when the fruit is dry they are depressed and changed into cavities. 
* Rosa canina. Is the R. canina of the older authors an excessively 
lymorphous type, or is it made up of an association of different 
species? Is it in Rosa what fruticosus is in Rubus? This is a ques- 
tion which it is very difficult to answer. I give a dichotomous analysis 
of the principal forms met with in this country :— 
"4 DENM WHR athe SOM 1 1 o. 015. NT.» 
iit 
b Leaflets rough below, g eto: on n alia or nds all ibn veins ; is pel 
cels glabrous, me a little glandular . R. trachyphylia, Rau. 
Leaflets not glandular below or ee glandular on y midrib c 
c Calyx-tube and ini globular globularis, rudi 
Calyr-tube and fruit ovoid . . . . . . . . eg dumalis, Bechst 
d Leaflets quite glabrous below e 
dn. or more or W EENE AER belii; RS on 
(du AN ue QU sete g 
e epis dp E. bap herieal . . . . R. spherica, Gu. 
Calyx-tube ovoid ; fruit ovoid, ovoid-oblong or pyriform . . . . 
J Pedicel and calyx-tube more or ndevagensis, Bast 
Pedicel and calyx-tube x R. canina, L. 
g Leaves pubescent only on the veins bilou : : R. urbica, ppm 
Leaves pubescent below over pros whole surface 
h — globular; fruit thick, subglobose or lghisicaf; as 
2 long time by the ia subpersistent sepals R. eor folds Tin 
Cdyribe a and si. ovoid ; cas deciduous . . 
i Pedicels not Low v. M alien, Theil. 
Pedicels more or pee STE , P. . . R. collina, Jacq." 
