146 THE JOURNAL OF BOTANY 
Botanische Jahrbiicher, vol. x. 75-241 (1888). It should be noted 
that this diagram does not include all the members of the genus, 
but only those which are included in the Primulastra section, to 
which the oxlip belongs. 
The genus Primula: section Primulastra. 
. ae 
‘py 4 : ig AY -£o a. + o 
ay ; co a 
R : + 
Mf: ‘ 
Xs, ‘ 
: fragrans 
. i 
digenea. i ; _4@) amoena 
: +fa Ilax : : 
Woo Meyer 
- H Rie 
“ay / gresumMes +me\di 
bal rica - INC ESTOS * 
os nt 7 
oes 0" SY inflata 
: a << 
acaulis @) Sibthorpii C) Xo 
terochro er gs 
‘ey, a 
e ie 
ylesor" ve 7 
: ng 
é ca PS 20 2 
e\\! cal? — —— Me 
: : C4 
A\-5 @ = superspecies, OF Species. 
@® = species, or varrety. + = hybrid. 
Interrelations of the Oxlip (Pe/atror), Cowslip 
(Poffemalis), and Primrose (PR acaulis); 
with their allies and hybrids. 
casian cowslip (P. amena M. Bi b.), the cowsli (P 
roi and the primrose (P. acaulis J acq.), marked on the diagram 
wi 
