This article is about the plant. For other uses, see Holly
(disambiguation).
Hollies (here,
Ilex aquifolium) are dioecious: (above) shoot with flowers from male plant; (top right) male flower
enlarged, showing
stamens with
pollen and reduced, sterile
stigma; (below) shoot with flowers from female plant; (lower right) female flower enlarged,
showing stigma and reduced, sterile stamens with no pollen.
Holly (Ilex) is a genus of about 600 species of flowering plants
in the family Aquifoliaceae, and the only genus in that family. They are shrubs and trees from 2–25 m tall, with a wide distribution in Asia, Europe, north Africa, and North and South America. The leaves
are simple, and can be either deciduous or evergreen
depending on the species, and may be entire, finely toothed, or with widely-spaced, spine-tipped serrations. Hollies are mostly
dioecious, with male and female flowers on different
plants, with some exceptions. Pollination is mainly by bees and
other insects. The fruit is a small berry, usually red when mature, with one to ten seeds.
Selected species
- Ilex ambigua – Sand Holly
- Ilex amelanchier – Swamp Holly
- Ilex aquifolium – European Holly
- Ilex bioritsensis
- Ilex buergeri
- Ilex canariensis – Small-leaved Holly
- Ilex cassine – Dahoon Holly
- Ilex centrochinensis
- Ilex ciliospinosa
- Ilex colchica
- Ilex collina
- Ilex corallina
- Ilex coriacea – Gallberry
- Ilex cornuta – Chinese Holly
- Ilex crenata – Japanese Holly
- Ilex cyrtura
- Ilex decidua – Possumhaw
- Ilex dehongensis
- Ilex dimorphophylla
- Ilex dipyrena – Himalayan Holly
- Ilex fargesii
- Ilex geniculata
- Ilex georgei
- Ilex glabra – Gallberry, Inkberry
- Ilex goshiensis
- Ilex guayusa
- Ilex integra
- Ilex intricata
- Ilex kingiana
- Ilex kudingcha
- Ilex kusanoi
|
- Ilex laevigata
- Ilex latifolia – Tarajo Holly
- Ilex leucoclada
- Ilex longipes
- Ilex macrocarpa
- Ilex macropoda
- Ilex mitis
- Ilex montana – Mountain Winterberry
- Ilex mucronata – Mountain Holly
- Ilex myrtifolia – Myrtle Holly
- Ilex nothofagifolia
- Ilex opaca – American Holly
- Ilex paraguariensis –Yerba Mate
- Ilex pedunculosa
- Ilex perado – Madeiran Holly
- Ilex pernyi – Perny's Holly
- Ilex pringlei
- Ilex pubescens
- Ilex purpurea
- Ilex rotunda
- Ilex rugosa
- Ilex serrata – Japanese Winterberry
- Ilex sikkimensis
- Ilex spinigera
- Ilex sugerokii
- Ilex tolucana
- Ilex verticillata – American Winterberry
- Ilex vomitoria – Yaupon Holly
- Ilex wilsonii
- Ilex yunnanensis
|
Sources:[1][2][3][4][5][6]
Ilex verticillata foliage and berries
Holly berries are mildly toxic and will cause vomiting and/or diarrhea when ingested by people.
However they are extremely important food for numerous species of birds, and also are eaten by
other wild animals. In the fall and early winter the berries are hard and apparently unpalatable. After being frozen or frosted
several times, the berries soften, and become edible. During winter storms,
birds often take refuge in hollies, which provide shelter,
protection from predators (by the spiny leaves), and food. The
flowers are sometimes eaten by the larva of the Double-striped Pug moth. Other Lepidoptera whose larvae feed on holly include Bucculatrix
ilecella (which feeds exclusively on holly) and the Engrailed.
The species Ilex mucronata, formerly treated in a separate genus Nemopanthus, is now included in Ilex on
molecular data; it is closely related to Ilex amelanchier.[7][8]
Etymology
The origin of the word holly is Old English holegn, which is related to Old High German hulis (the French word for holly, houx, derives from the German word). These Germanic words appear
to be related to words for holly in Celtic languages, such as Welsh celyn and Irish cuilleann.
The botanical name ilex was the original Latin name for the Holm Oak Quercus
ilex, which has similar foliage to common holly, and is occasionally confused with it.
Uses
In many western cultures, holly is a traditional Christmas decoration, used especially in
wreaths. Many of the hollies are highly decorative, and are widely used as ornamental plants in
gardens and parks. The wood is heavy,
hard and white; one traditional use is for chess pieces, with holly for the white pieces, and
ebony for the black. Other uses include turnery, inlay work and as firewood. Looms in the 1800s used holly for the spinning rod. Because holly is dense and can
be sanded very smooth, the rod was less likely than other woods to snag threads being used to make cloth.
A holly bush with a lone red berry in winter.
Several American holly species are used to make various caffeine rich teas. The South American I. paraguariensis is used
to make yerba mate, a common drink. I. guayusa
is used both as a stimulant and as an admixture to the entheogenic tea ayahuasca; The leaves of I. guayusa have the highest caffeine content of any known plant. In
North and Central America, I. vomitoria, Yaupon, was used by southeastern
Native Americans as a ceremonial stimulant and emetic known as the
black drink. As the name suggests, the tea's purgative properties were one of its main uses,
most often ritually. In China, the young leaf buds of I.
kudingcha are processed in a method similar to green tea to make a tisane called Ku Ding tea.
Holly shrubs and trees are often used by homeowners and landscape architects for
home security purposes. The sharp thorns of many species deter unauthorised persons from
entering private properties, and may prevent break-ins if planted under windows and near drainpipes. The aesthetic
characteristics of holly plants, in conjunction with their home security qualities, makes them a good choice for hedges.[9]
References
Wikimedia Commons has media related to:
- ^ Germplasm Resources Information Network: Ilex species list
- ^ Flora of China:
Ilex species list
- ^ Flora of Ecuador:
Ilex
- ^ Flora Europaea: Ilex species list
- ^ Flora of Nepal:
Ilex species list
- ^ USDA Plants Profile: Ilex
- ^ Powell, M., Savolainen, V., Cuénod, P., Manen, J. F., & Andrews, S.
(2000). The mountain holly (Nemopanthus mucronatus: Aquifoliaceae) revisited with molecular data. Kew Bulletin 55:
341–347.
- ^ Gottlieb, A. M., Giberti, G. C., & Poggio, L. (2005). Molecular
analyses of the genus Ilex (Aquifoliaceae) in southern South America, evidence from AFLP and ITS sequence data. Amer. J.
Bot. 92: 352-369. Available online.
- ^ Northumbria Police: Security starts at the Garden Gate
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)