NOTES ON BRITISH ELMS 67 
aggregate rime a ee others, varies more than do the rest in 
leaf characters. oughness or smoothness of their surfaces, 
as well as the ise ‘a disposition of the hair clothing them, is 
also in many cases a useful guide; it is, fected seldom an abso- 
lute character in the aggregate U. g 
In collecting specimens for the elbatliita care should be taken 
to gather normal leaves from the at of the tree itself, not 
from cropped parts nor from suckers. When specimens are taken 
from suckers this should be dlatuty stated, otherwise they are 
Mie 
I have to acknowledge help from Dr. C. E. Moss, Curator of 
the Datrmnity Museum, Cambridge; from Mr. Clement Reid, F.R.S.; 
and especially fie Mr. E.G. Baker, F.L.S., of the Botanical Depart- 
the Natural History Mus “ei m the task of unravelling the synonymy 
would have been difficu 
Synopsis oF CHARACTERS. 
fai cavity at centre of samara, ee 0 2 
Seed cavity above centre, suckers 3 
gree large (1 in.), oval or elliptic; notch not reaching more than 
quarter distance to cavity, its basal angle very acu sca 
fete large, broadly oval or obovate obtuse ; notch ‘reaching ny 
vegeta 
e to ‘cavity, pe ier angle acute 
Samara rather smalle vo notch reaching nearly 6 cavity, 
its basal angle rather obtu 
Samara small (} in sora ccbieaua notch evenly pila . st 
Bole and iaigs aac, leaves ovate- or chovete lanceolate, light 
* 
{ee and twigs especially those arising from bole Rha sears 3 
a rather narrow, acuminate, branches straight, slender 
On 
ra var. swberosa. 
Leaves broadly ovate, branches pointed, drooping ......... 4, major. 
1. Unmus scaBra (scabris) Mill. Gard. oe ed. 8, n. 2 (1768). 
U. oofeontena (hollandicus) Mill. l.c 
U. montana Stokes in With. Bot wes ‘ed. 2, i. 259 (1787). 
U. campestris Li. Sp. Pl. 225 pro parte et herb. ? (1753). 
U. glabra Huds. Fl. Angl. 95 pro parte (1762). 
Wych Elm 
“U, (scabris) — ae inzequaliter serratis, calyci- 
us foliace Miller J. c 
..U; (Hollandicus) foliis ovatis acuminatis rugosis, inequaliter 
serratis, cortice fungoso. .. . Ulmus major ollandica, 
angustis et magis acuminatis — folio latissimo, 
= luk. Alm. [393].” Miller 7. 
a tines, narrowly or broadly oblong or obovate, . aan 
what got lin.; notch open or yong, en open its bas 
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