TREES OF MARLBOROUGH COLLEGE AND ENVIRONS 19 
Golden Willow and Weeping Willow. In 
influencing the landscape, these two fungal species 
have caused most devastation to the abundant and 
once dominant riverside Crack Willows. Fifty 
years ago, in the wetlands of the Marlborough 
College Grounds south of the A4, searches were 
necessary to find White Willows amongst the Crack 
Willows. White Willows are now both abundant 
and dominant. The occasional interspersed 
scrubby or thin tree with many shrivelled leaves 
and attenuated branches and shoots will nearly 
always turn out to be Crack Willow. 
5. Long Term Effects of the Diseases 
In affecting the landscape, DED is the most 
important disease. It may be many human 
generations before Elms regain their former 
importance as countryside mature trees — if ever. 
There are many Willow and Sallow species and 
hybrids. As susceptibility between these different 
taxa varies so greatly, new dominant species and 
types readily take over in the wetlands and 
riverside which resist Willow Scab and Black 
Canker. This is survival of the fittest, evolution in 
action. 
Over hundreds (or thousands) of years, ODBD 
would seem to favour Durmast Oaks (Q.petraea) 
and the Hybrid Native Oak (Q. x rosacea) over 
English Oak (Q.robur). 
LIST OF TREE SPECIES AND HYBRIDS 
Key 
Frequency (F column) 
C. Common, likely to be seen in many parts of the 
grounds. 
O. Occasional. 
R. Rare. 
Situation (S column) 
FE Fringes and/or staff gardens. 
H. Used as hedging. 
K. Near R. Kennet, ponds or wet areas. 
L. Limited occurences. 
Ginkgoaceae. 
Araucariaceae. 
Cupressaceae. 
1.Ginkgo biloba Maidenhair Tree 
2.Araucaria araucana Monkey Puzzle, Chile Pine 
3.Chamaecyparis lawsoniana Lawsons Cypress 
4. Chamaecyparis lawsoniana cvs. At least 9 
distinctive cultivars of Lawson’s Cypress. 
5. Chamaecyparis obtusa cvs. At least 2 distinctive 
(mostly dwarfed) cultivars of Hinoki Cypress. 
6.Chamaecyparis pisifera Sawara Cypress 
N. New planting(s) of young tree(s). 
W. Widespread 
Natural Spread:- (NS column) 
S. Seedlings and/or natural saplings noted locally. 
SS. Seedlings and or natural saplings extensive, or 
frequently seen. 
V. Limited vegetative spread, suckering, layering etc. 
VV. Extensive vegetative spread. 
F 
2) 
NS 
Pinaceae 
7. X Cupressocyparis leylandu Leyland Cypress 
8. X C_leylandii ‘Castlewellan’ Golden Leyland 
9. Cupressus glabra ‘Pyramidalis’ Blue Arizona 
Cypress. 
10. Cupressus macrocarpa Monterey Cypress 
11.Funiperus chinensis Chinese Juniper 
12.7,recurva Drooping Juniper 
13.Thuja plicata Western Red-cedar 
14.Thuja cvs. Two or more dwarf cultivars of 
Chinese and White Cedars. 
15.Cedrus atlantica Atlantic (Atlas) Cedar 
16.Cedrus deodara Deodar Cedar 
17.Larix decidua European Larch 
18.Picea abies Norway Spruce 
19.Picea pungens Colorado Blue Spruce 
20.Pinus nigra ssp laricio & ssp nigra Black Pine 
21.Pinus radiata Monterey Pine 
22.Pinus sylvestris Scots Pine 
23.Pinus wallichiana Bhutan Pine 
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