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Useful Temperate Plants

Ilex x altaclerensis

(Loudon.)Dallim.

Aquifoliaceae


The Temperate Database is in the process of being updated, with new records being added and old ones being checked and brought up to date where necessary. This record has not yet been checked and updated.

+ Synonyms

Common Name: Holly

No Image.

General Information

Ilex x altaclerensis is an evergreen shrub that can grow up to 4.00 metres tall
The plant is sometimes grown as an ornamental, where it can be used to make a hedge

Known Hazards

Although no specific reports of toxicity have been seen for this species, Ilex species in general contain several potentially toxic compounds, particularly saponins, glycosides and triterpenoids. These compounds also often have a range of potential health benefits[
274
Title
Illustrated Flora of North Central Texas
Publication
 
Author
Diggs, Jnr. G.M.; Lipscomb. B. L. & O'Kennon. R. J
Website
http://artemis.austincollege.edu/acad/bio/gdiggs/NCTXpdf.htm
Publisher
Botanical Research Institute, Texas.
Year
1999
ISBN
1-889878-01-4
Description
An excellent flora, which is also available on-line.
,
293
Title
Poisonous Plants of North Carolina
Publication
 
Author
 
Website
http://www.ces.ncsu.edu/depts/hort/consumer/poison/poison.htm
Publisher
 
Year
0
ISBN
 
Description
An excellent concise but comprehensive guide to toxic plants that grow in N. Carolina. It lists even those plants that are of very low toxicity, including several well-known food plants such as carrots and potatoes.
,
2070
Title
Genus Ilex L.: Phytochemistry, Ethnopharmacology, and Pharmacology
Publication
Chinese Herbal Medicines, 2016, 8(3): 209-230
Author
Fan Yi, Xiao-ling Zhao, Yong Peng, Pei-gen Xiao
Website
http://10.1016/S1674-6384(16)60044-8
Publisher
 
Year
2016
ISBN
 
Description
 
].
The berries are usually the part of the plant most likely to be toxic, though the degree of toxicity is usually low. Their bitter flavour usually prevents a person eating more than one or two, but even a small handful of the fruit eaten by a healthy adult is unlikely to cause more than feelings of nausea that can lead on to vomiting and diarrhoea[
293
Title
Poisonous Plants of North Carolina
Publication
 
Author
 
Website
http://www.ces.ncsu.edu/depts/hort/consumer/poison/poison.htm
Publisher
 
Year
0
ISBN
 
Description
An excellent concise but comprehensive guide to toxic plants that grow in N. Carolina. It lists even those plants that are of very low toxicity, including several well-known food plants such as carrots and potatoes.
].
The compounds in the leaves are particularly interesting. The leaves of many Ilex species around the world are commonly used to make health-promoting teas that, when drunk on a regular basis, help to regulate bodily functions and can reduce the risk of heart disease, lower blood-cholesterol levels etc (See Ilex paraguariensis or Ilex kaushue for examples)[
2070
Title
Genus Ilex L.: Phytochemistry, Ethnopharmacology, and Pharmacology
Publication
Chinese Herbal Medicines, 2016, 8(3): 209-230
Author
Fan Yi, Xiao-ling Zhao, Yong Peng, Pei-gen Xiao
Website
http://10.1016/S1674-6384(16)60044-8
Publisher
 
Year
2016
ISBN
 
Description
 
]. Even these teas, however, if taken in very concentrated doses, can act as a laxative or cause vomiting. Indeed, several species are used by traditional peoples to induce vomiting as a means of purifying the body (see Ilex guayusa or Ilex vomitoria for examples)

Botanical References

11
Title
Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
Publication
 
Author
Bean. W.
Publisher
Murray
Year
1981
ISBN
-
Description
A classic with a wealth of information on the plants, but poor on pictures.
,
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.

Range

A hybrid of garden origin, I. aquifolium x I. perado.

Habitat

Not known in the wild.

Properties

Other Uses Rating *  *
HabitEvergreen Shrub
Height4.00 m
Growth RateSlow
PollinatorsBees
Self-fertileNo
Cultivation StatusWild

Cultivation Details

Dormant plants are hardy to about -15°c if they are given shelter from cold drying winds[
184
Title
Shrubs.
Publication
 
Author
Phillips. R. & Rix. M.
Publisher
Pan Books
Year
1989
ISBN
0-330-30258-2
Description
Excellent photographs and a terse description of 1,900 species and cultivars.
]. The young growth in spring can be damaged by late frosts.
Succeeds in most soils so long as they are not water-logged[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. Grows well in heavy clay soils.
Tolerates industrial pollution and maritime exposure[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. Slow growing.
Plants are very tolerant of trimming and can be pruned right back into old wood.
A very ornamental plant, there are many named varieties[
182
Title
Ornamental Shrubs, Climbers and Bamboos.
Publication
 
Author
Thomas. G. S.
Publisher
Murray
Year
1992
ISBN
0-7195-5043-2
Description
Contains a wide range of plants with a brief description, mainly of their ornamental value but also usually of cultivation details and varieties.
].
Dislikes root disturbance, especially as it gets older[
11
Title
Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
Publication
 
Author
Bean. W.
Publisher
Murray
Year
1981
ISBN
-
Description
A classic with a wealth of information on the plants, but poor on pictures.
]. It is best to place the plants into their permanent positions as soon as possible, perhaps giving some winter protection for their first year or two[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
]. Any transplanting is best done in May or, preferably, in September.
A dioecious species - both male and female forms must be grown if fruit and seed are required.

Edible Uses

None known

Medicinal

None known

Other Uses

Makes a good windbreak hedge, succeeding even in exposed maritime areas, though it is slow growing. The vars. 'Hendersonii' (f), 'Hodginsii' (m) and 'Maderensis' (m) are especially noted[
75
Title
Shelter Trees and Hedges.
Publication
 
Author
Rosewarne experimental horticultural station.
Publisher
Ministry of Agriculture, Fisheries and Food
Year
1984
ISBN
-
Description
A small booklet packed with information on trees and shrubs for hedging and shelterbelts in exposed maritime areas.
].

Propagation

Seed - best sown as soon as it is ripe in the autumn in a cold frame. It can take 18 months to germinate. Stored seed generally requires two winters and a summer before it will germinate and should be sown as soon as possible in a cold frame. Scarification, followed by a warm stratification and then a cold stratification may speed up the germination time[
78
Title
Propagation of Trees, Shrubs and Conifers.
Publication
 
Author
Sheat. W. G.
Publisher
MacMillan and Co
Year
1948
ISBN
-
Description
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
,
80
Title
Hardy Woody Plants from Seed.
Publication
 
Author
McMillan-Browse. P.
Publisher
Grower Books
Year
1985
ISBN
0-901361-21-6
Description
Does not deal with many species but it is very comprehensive on those that it does cover. Not for casual reading.
]. The seedlings are rather slow-growing. Pot them up into individual pots when they are large enough to handle and grow them on in light shade in a cold frame for their first year. It is possible to plant them out into a nursery bed in late spring of the following year, but they should not be left here for more than two years since they do not like being transplanted. Alternatively, grow them on in their pots for a second season and then plant them out into their permanent positions in late spring or early summer. Give them a good mulch and some protection for their first winter outdoors. This is a hybrid species so any seedlings will not be true to type.
Cuttings of almost ripe wood with a heel, August in a shaded position in a cold frame. Leave for 12 months before potting up.
Layering in early autumn. Takes 2 years[
78
Title
Propagation of Trees, Shrubs and Conifers.
Publication
 
Author
Sheat. W. G.
Publisher
MacMillan and Co
Year
1948
ISBN
-
Description
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
].
Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2023-01-28. <temperate.theferns.info/plant/Ilex+x+altaclerensis>

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