ROSACEA. to 
serrate. Flower-heads terminal, roundish or ovate-ovoid, with the 
male or perfect flowers at the base, and the female flowers towards 
the apex of the head. Fructiferous calyx with 4 longitudinal 
entire or toothed elevated rather thick wings, the intermediate 
spaces with a network of strongly-elevated and generally denticu- 
lated ridges. 
Var. a, platylophium. 
P. platylophium, Jord. Frag. VII. p. 22. 
Fruit ovate-fusiform, + inch long, with the wings very broad, 
with blunt denticulated edges; the faces muricated with very pro- 
minent sharply denticulated anastomosing ridges. 
Var. 9, stenolophium. 
P. stenolophium, Jord. Frag. VII. p. 22. 
Fruit broadly ovate-ovoid, about + inch long, with the wings 
very prominent, with sharp, entire edges; the faces with elevated 
rather bluntly denticulated anastomosing ridges. 
On the chalky borders of fields and in cultivated sainfoin and 
erass-fields, in which it is no doubt generally, if not always, in- 
troduced with seed from the Continent. Rather rare. The variety 
a I have from Combe Down, Bath, Somerset; Bembridge, Isle of 
Wight; Kenilworth, Warwickshire ; variety 6 from Newmarket, 
Cambridge, and St. Margaret’s, Kent. The species has also been 
found in the counties of Kent, Hants, Surrey, Essex, Suffolk, Cam- 
bridge, Berks, and Hereford; but, as the two varieties have not, 
so far as I know, been distinguished in this country, I am unable 
to give the separate localities for each, except when specimens 
have come under my own observation. 
England. Perennial. Summer and Autumn. 
Usually a considerably larger more branched and less rigid plant 
than P. Sanguisorba, frequently 2 or 3 feet high, with the leaflets 
larger, those of the stem longer; the flower-heads larger and more 
elongate; the fruit considerably larger, with the wings much more 
conspicuous, and what are merely veins on the faces in P. San- 
euisorba are elevated into more or less denticulated ridges in the 
P. muricatum. 
I judge of M. Jordan’s names from the specimens in Billot’s 
collection. There is so much difference between the fruits of the 
two forms, that very probably they ought to be separated as sub- 
species. Var. a somewhat resembles P. Magnolii, Spach; but 
that has the facial ridges produced into acute tubercles projecting 
