The Hick’s yew is a cultivar of the Anglojap yew, is a hybrid yew plant believed to be created by T.D. Hatfield, a Massachusetts based horticulturist. It is the result of the hybridization of the English yew and the Japanese Yew.
Yew
Yew is any of the slow-growing, long-lived coniferous shrubs or trees classified in the family Taxaceae. These small conifers are found across the temperate and tropical mountainous forests of the northern hemisphere. Several of the yew species are typically used in landscaping as ornamental trees because of their high resistance to urban pollution.
Scientific Classification | |
| Kingdom | Plantae |
| Clade | Tracheophytes |
| Division | Pinophyta |
| Class | Pinopsida |
| Order | Pinales |
| Family | Taxaceae |
List of Different Types of Yew Trees
The name yew is typically given to coniferous trees belonging to the families Cephalotaxaceae and Taxaceae. Although Cephalotaxaceae is a separate group of conifers containing three genera, many botanists unite and include these genera in the Taxaceae family. It includes six extant genera and roughly 40 species of plants, out of which the Taxus genus is commonly categorized into the following species:
- Common yew or European yew or English yew (Taxus baccata)
- Western yew or Pacific yew (Taxus brevifolia)
- Canadian yew (Taxus canadensis)
- Japanese yew (Taxus cuspidata)
- Chinese yew (Taxus chinensis)
- Mexican yew (Taxus globosa)
- Florida yew (Taxus floridana)
- West Himalayan yew (Taxus contorta)
- East Himalayan yew (Taxus wallichiana)
- Kingston yew (Taxus kingstonii)
- Taiwan yew (Taxus sumatrana)
- Celebes yew (Taxus celebica)
- Maire’s yew (Taxus mairei)
- Irish yew (Taxus fastigiata)
- Scaly yew (Taxus ocreata)
- Scutaceous yew (Taxus scutata)
- Phyton yew (Taxus phytonii)
The other existing genera under the Taxaceae family include Amentotaxus, Austrotaxus, Cephalotaxus, Pseudotaxus, and Torreya. Here are some of the different yew species categorized under these genera:
- Assam catkin yew (Amentotaxus assamica)
- Taiwan catkin yew (Amentotaxus formosana)
- Poilane’s catkin yew (Amentotaxus poilanei)
- Yunnan catkin yew (Amentotaxus yunnanensis)
- New Caledonia or southern yew (Austrotaxus spicata)
- Griffith’s plum yew (Cephalotaxus griffithii)
- Oliver’s plum yew (Cephalotaxus oliveri)
- Chinese plum yew (Cephalotaxus sinensis)
- Korean plum yew (Cephalotaxus koreana)
- Gongshan plum yew (Cephalotaxus lanceolata)
- Whiteberry yew (Pseudotaxus chienii)
- Farges nutmeg tree (Torreya fargesii)
- Chinese nutmeg yew (Torreya grandis)
- Japanese torreya (Torreya nucifera)
- Florida torreya (Torreya taxifolia)
Some hybrid yews have been reported, including Taxus x media and Taxus x hunnewelliana produced by hybridization of Taxus cuspidata with Taxus baccata and Taxus canadensis, respectively. Cultivars included are Hicks yew or Anglojap yew, Pacific yew cv erecta, Pacific yew cv nana, Pacific yew cv nutallii, Japanese yew cv dwarf bright gold, and English yew cv fastigiata.
Quick Information | |
| Tree Type | Evergreen coniferous |
| Identification | Height: 8-65 ft, some can be 130 ft high Leaves: Flat, dark-green, lanceolate, arranged in spiral form, 10-40 mm long Trunk Diameter: Usually 5-6.5ft, some may have a thickness of about 16 ft Bark: Thin, purple-brown or red, smooth, gradually becomes scaly or fibrous Female Cones: Highly modified, produces one seed Seeds: 4-7 mm long, surrounded by a red berry-like aril, 8-15 mm long Branches: Alternate, smooth, remains green during the first two years Crown: Dense, pyramidal, becomes irregular with age Pollen cones: Globular, 3-6 mm wide |
| Distribution | Most of Europe and Asia, northwest Africa, North and Central Americas |
| Habitat | Near sea level in moist temperate forests, at an elevation of about 2500-3000 m in tropical regions |
| USDA Hardiness Zone | 4-9, depending on the species |
| Growth Rate | Slow to average, about 20-40 cm per year |
| Lifespan | Long-lived, over 1000 years; the oldest tree in Europe, the Fortingall Yew, is more than 2000 years old |
| Growing Conditions | Sunlight: Tolerates full sun, full shade, and partial shade Soil: Moist, well-drained, with organic matter Water: Frequent watering in the first year after it is planted |
| Drought Tolerance | Moderate |
| Diseases & Pests | Mostly resistant to pests and diseases; very few insects such as mites and yew scale attack the needles, phytophthora fungus species may cause root and crown rot |
| Reproductive System | Dioecious, occasionally change sex with age and can be monoecious |
| Propagation | Through stem cuttings |
| Care | Prune yews in winter or early spring to control their size |
| Wildlife Value | Birds like waxwings and thrushes eat arils that contain seeds |
| Uses | As an ornamental plant, source of Taxol or paclitaxel, production of drug eluting stent |
| IUCN Conservation Status | The population of most species, including Taiwan, Himalayan, and Pacific yew is decreasing, while that of Common yew is increasing |
Increasing Facts
- All the parts of a yew, excepting the berries, are poisonous to humans. However, the seeds within the berries also prove to be fatal due to the presence of taxine alkaloids.
- Because of the toxic properties of the trees, the yews were grown only in enclosed places of a village, typically in English churchyards.
- The name ‘yew’ is also used for referring to any of the conifers belonging to the family Podocarpaceae that includes species apparently similar to true yews. These species include plum-yew and Prince Albert’s yew.
References
Japanese Plum Yew
The Japanese plum yew is a deer-resistant small tree belonging to the plum-yew family. Its scientific name is in honor of the Earl of Harrington, who was the first plant this tree in a Europe.
English Yew
Originally known just as Yew, the English yew moniker started becoming commonplace when other trees of this genus were discovered. It is found across Europe and in parts of Asia and Africa as well. It is sometimes considered a shrub because of its average medium maximum size despite the columnar structure.
Pacific Yew
The Pacific Yew is an evergreen coniferous tree which comes in small to medium sizes appearing somewhat like a large shrub. It is a native North American tree mainly found in moist, shady regions, and in the underlying layers of vegetation in dense forests.
Japanese Yew
The Japanese yew is a highly sought after ornamental shrub native to Japan, Korea, and some other countries in the region. It is very tolerant to pruning and is ideal for use as a hedge, backdrop for a garden, and in its native regions, particularly Japan as a bonsai tree.