152 
THE JOURNAL OF BOTANY 
basis Code and the differences between it and the International Rules 
are summarised by Mr. Hitchcock in this Journal for 1922 (p. Ill), 
and we shall be glad to open our pages to a discussion on the 
subject. 
PULMONARIA ANGUSTIFOLIA L. (P. AZUREA Besser). This 
beautiful plant is becoming generally known under the trinominal 
Pulmonaria angustifolia azurea — e.g., it is thus named and Hgured 
in the Gardeners Chronicle for March 3, and has been exhibited, 
so-named, at the R. H. S. shows. The misapplication of the name 
angustifolia to the Hampshire plant which is so called in British 
books was pointed out by Mr. Wilmott in this Journal for 1917 
(pp. 233-240), where he shows that the British plant, which Kerner 
had referred to P. angustifolia L., “ is certainly not that very dis¬ 
tinct species, but is the plant which Kerner calls P. longifoliaf 
and identities the Linnean species as the plant subsequently named by 
Besser P. azurea. Mr. Cowley (Hard. Chron. 1. c .) speaks of the 
latter as “ the variety azurea ” and says it “ is a great improvement 
on our native Blue Cowslip (P. angustifolia'), the flowers of which 
are at first pink and afterwards turn bright blue ” ; he goes on to 
speak of “ the true azurea as known in the trade as the Munstead 
variety it having been grown by Miss Jekyll at that place for 
many years and hence distributed. No one who has seen the plant 
growing could possibly doubt its distinctness from the English so- 
called angustifolia , both in habit (which is well shown in the Gard. 
Chron. figure) and in the beautiful blue of its flowers, indicated by 
Besser in his specific name azurea. For horticultural purposes, in 
view of the existing confusion, the name azurea may well be retained 
for the plant, although it is undoubtedly the true angustifolia of 
Linnaeus ; “ P. angustifolia azurea ” is a trinominal absurdity which 
should at once be abandoned. —James Britten. 
REVIEWS. 
Introduction to the Plant-life of the Oxford District. Pt. I. 
General Review. By A. H. Church. Pp. 103, 15 plates. 
Oxford Botanical Memoirs, No. 13. Oxford University Press. 
3s. 6d. net. 
This addition to the Oxford Botanical Memoirs is a general 
account of the vegetations of the Oxford area as a training-ground 
for students of Forestry and Botany. The author at the outset 
states that oral instruction is assumed, and it is perhaps to this fact 
one owes the rather ill-balanced treatment of the subject. That the 
treatment is original we need hardly sav; the style is that which we 
have come to associate with the pen of Dr. Church. Unconven- 
tionality is indeed the chief charm of these pages, and for those who 
are familiar with the fundamentals of ecology and aware of its many 
pitfalls and the facilities for easy generalisations which the subject 
-affords, we could thoroughly recommend this memoir, from the 
perusal of which we ourselves have derived much pleasure. We 
