This is the complete list of tree species starting with the letter H.
This comprehensively researched guide will help you identify all trees whose names begin with the letter H.
- 1. Hackmatack
- 2. Hazelnut, Beaked
- 3. Heartnut
- 4. Hearts-a-bustin’
- 5. Hedge, Pencil Rubber
- 6. Hercules’ Club
- 7. Hobblebush, Florida
- 8. Honey-balls
- 9. Honeytree, Smooth
- 10. Hopbush, Florida
- 11. Hoptree, Common
- 12. Horsebush
- 13. Horseradish-tree
- 14. Horse Sugar
- 15. Hypericum, Spongebark
- 16. Haw, Purple
- 17. Headache Tree
- 18. Hemptree
- 19. Holdback, Spiny
- 20. Hollyberry
- 21. Horsebean
- 22. Huata
- 23. Huisache
- 24. Hornbeam, American
- 25. Hackberries (Genus)
- 26. Hawthorns (Genus)
- 27. Hibiscuses (Genus)
- 28. Hickories (Genus)
- 29. Hollies (Genus)
- 30. Harbison’s Hawthorn
- Bottom Line
Scientific Name: Populus balsamifera
Native: Throughout Canada and U.S.
This 18 to 40 m tall tree has a slender trunk and alternate, simple leaves that are large, ovate, and bluntly toothed.
The flowers are catkins during the spring with strongly scented buds, and the fruit is an egg-shaped capsule with two valves.
2. Hazelnut, Beaked
Scientific Name: Corylus cornuta
Native: North Alabama
This shrub of about 2m tall or a small tree of 6m tall has simple, oval, dark green leaves and unisexual catkins borne on the same tree.
The fruit is an edible, brown nut whose tip is an elongated beak for a tip.
Scientific Name: Juglans ailantifolia
This tree grows up to 20m tall with a trunk 15 to 20cm in diameter. The leaf is compound and has 11 to 17 leaflets.
It is oval or ovate with a yellow-green lustrous upper surface and a paler lower surface.
The flowers are small and produced in yellow-green catkins. The fruit is elliptical nut or drupe.
Scientific Name: Euonymus americanus
Native: Moist woods and floodplains of eastern North America
This shrub has multiple stems and a distinct knobby red fruiting capsule.
The leaves are dark green and fine-toothed, and the stems are green as well.
The tree also bears a creamy white 4-petaled flower. The flowers are borne from the leaf axils.
5. Hedge, Pencil Rubber
Scientific Name: Euphorbia tirucalli
This succulent shrub or small tree grows to 9m tall with many branches resembling pencils. The leaves may be absent or simple and spoon-shaped.
The flower is small and yellowish, borne year-round in ball-like heads. The fruit is a 3-parted capsule.
6. Hercules’ Club
Scientific Name: Zanthoxylum clava-herculis
Native: Southeast U.S.
This shrub or tree grows to 20m tall and has a diameter of about 70cm.
The trunk is erect and singular, with thorny prickles on the lower part.
The leaf is pinnate and has leaflets, typically five. The flower is greenish-yellow, and the fruit is a follicle with lustrous black seeds.
7. Hobblebush, Florida
Scientific Name: Agarista populifolia
Native: Acid swamps around the southeastern United States
Agaristas are small shrubby trees that grow around 4 to 7 meters tall and 7cm in diameter.
They have thick leaves with a smooth, lustrous upper surface and pale lower surface.
They bear white, 5-petaled flowers with constricted necks and a rounded fruit that matures late in summer.
Scientific Name: Cephalanthus occidentalis
Native: California, southern Arizona, western Texas
This small tree or large shrub forms from 3 to 15m tall with whorled leaves with a dark green, shiny upper surface and a paler lower surface.
The flower is borne in dense spherical heads with a hairless calyx and a creamy-white corolla.
They are trumpet-shaped. The fruit is a woody capsule with segments packed into the spherical heads.
9. Honeytree, Smooth
Scientific Name: Casearia nitida
Native: West Indies
This shrub or small tree grows to 5m tall and has an erect trunk with a dense crown.
The leaf is alternate, simple, and leathery with a lustrous green upper surface.
The flower is greenish-yellow, and the fruit is a rounded capsule that matures in summer.
10. Hopbush, Florida
Scientific Name: Dodonaea viscosa
Native: Southern Florida, Arizona
This evergreen shrub or small tree to 3m tall is erect and shrubby.
The leaves appear simple, leathery, and are narrowly oval.
The upper surface is shiny green with scales. The flower is small, red or yellow-green, and four or 5-petaled. The fruit is a winged pink to the yellow capsule.
11. Hoptree, Common
Scientific Name: Ptelea trifoliata
Native: East North America
This colony-forming shrub or small tree grows to 7.5m tall with a single, erect trunk and a broad crown.
The leaf is alternate, compound and releases a fetid odor when crushed.
The flowers are small, greenish-white, and the fruit is a circular samara.
Scientific Name: Peltophorum dubium
Native: South America
The tree grows to 13m tall with a single trunk and a broad high branching crown.
The leaf is alternate and 20cm broad with 15-25 pairs of primary segments.
The flower is produced in several numbers with yellow buds in the summer. The fruit is a flattened, winged legume.
Scientific Name: Moringa oleifera
Native: India and Sri-Lanka
This shrub or tree grows to 12m tall with a diameter of 40cm.
The leaf is alternate and compound. The leaf exudes a strong aroma of horseradish upon being crushed. The flower is creamy-white or yellow, resembling a pea.
The fruit is a bean-like capsule.
14. Horse Sugar
Scientific Name: Symplocos tinctoria
Native: Southeast U.S.
This shrub or small tree grows from 2 to 15m tall with an erect trunk and a gray to pink bark.
The leaf is simple, elliptical, and leathery with a lustrous green upper surface.
The flower is bisexual and fragrant, creamy-white or yellow in color. The fruit is an oblong drupe.
15. Hypericum, Spongebark
Scientific Name: Hypericum chapman
Native: Florida panhandle
This low shrub or small tree grows to 4m tall with a single, erect trunk. The leaves are whorled, angling upward from the branch.
The bark is thick and spongy. The flower is yellow, borne in a 3-flowered inflorescence.
The fruit is an ovoid capsule.
16. Haw, Purple
Scientific Name: Condalia hookeri
Native: Sandy brush areas of Texas and Mexico
Type: Evergreen or Deciduous
This shrub or tree forms thickets and grows up to heights of 6-9m tall.
It has thorn-tipped rigid twigs with spoon-shaped leaves that are lustrous and yellow-green.
The flower is bowl-shaped and light green, and the fruit is a circular drupe that darkens as it matures.
17. Headache Tree
Scientific Name: Umbellularia californica
Native: Redwood forests, slopes, and canyons of California
This magnificent tree stands up to 45m tall with a trunk up to 1m in diameter.
It has highly aromatic pungent leaves and pale-yellow flowers in clusters of 6 to 8.
The fruit is a circular to ovoid drupe that resembles a golf ball on a tee.
Scientific Name: Vitex agnus castus
This aromatic shrub or small tree grows to 7m tall with a 10cm diameter.
The leaves are palmately compound with 3 to 9 leaflets.
The upper surface is dull green and hairless while the lower surface is grayish-green. The flower is blue, white, or lavender and the fruit is a dry, hard drupe.
19. Holdback, Spiny
Scientific Name: Caesalpinia spinosa
This evergreen shrub or small tree grows from 2 to 5m tall. The leaf is bipinnate and 25cm long with 6 to 20 leaflets.
The flowers are yellowish red with the upper petal spotted with red.
The tree bears leguminous oblong-shaped fruits.
Scientific Name: Heteromeles arbutifolia
Native: California and Baja California
This shrub or tree has a thin gray bark with dark red twigs and simple, leathery leaves that have a dark green upper surface.
The flowers are small and borne in white clusters.
The fruit is a pear-shaped bright red pome.
Scientific Name: Parkinsonia aculeata
This tree is nearly evergreen and grows up to 12m in height. The trunk is low-branched with several branches stooping low, giving it a round crown.
The bark is smooth and green.
The leaves are alternate bipinnately compound, and the flowers are yellow and grow in terminal clusters.
Scientific Name: Juniperus californica
Native: Nevada, California, Arizona
This shrub or tree up to 8m tall has a rounded crown and scalelike, light green leaves with a noticeable gland.
The bark is smooth and becomes exfoliating as the tree matures.
The seed cone matures in a year, is round, and may be a glaucous, blue-brown color.
Scientific Name: Vachellia farnesiana
Native: California, South America
This shrub or small tree to 9m tall has a tall, round crown. The bark is a dark gray-brown and the leaves are compound, crowded on spur twigs.
The flowers are bright yellow and produced in clusters.
The fruit is a flattened, curved, and leathery legume.
24. Hornbeam, American
Scientific Name: Carpinus caroliniana
Native: East North America
This tree is 8 to 25m tall with a single, erect trunk that is low branching. The bark is thin, tight, and mottled.
The leaf is alternate, simple, and elliptic with a dark green upper surface.
The flowers are catkins borne in spring. The fruit is a ribbed brown nutlet.
25. Hackberries (Genus)
Scientific Name: Celtis
Native: Distributed across the world
This genus has 70 to 100 species distributed throughout the world in low elevations.
The bark is thick, gray, and smooth and the leaves are simple and alternate.
The flower is greenish and borne in small clusters while the fruit is a small drupe.
26. Hawthorns (Genus)
Scientific Name: Crataegus
Native: Northern Hemisphere
This genus has 150-280 species that are typically shrubs or small trees with distinct piercing thorns on the branches.
The flowers are showy and produced numerously in drooping clusters at the end of branches. The fruit is a small pome.
27. Hibiscuses (Genus)
Scientific Name: Hibiscus
Native: Tropical and subtropical regions of the world
This is a genus of 200-600 species that are popular as garden plants and for ornamental purposes. These species are widely planted around the world in tropical regions.
They may be shrubs, trees, or herbs.
The leaf is alternate and simple. The flowers are large and variously colored, and the fruit is a rounded capsule.
28. Hickories (Genus)
Scientific Name: Carya
Native: North America, Mexico, Asia
This is a genus of 18 species distributed in North America. The trees grow up to 50m tall with alternate, compound leaves.
The flowers are catkins, and the fruit is a nut enclosed in a husk. This genus is widely planted for its nuts and wood.
29. Hollies (Genus)
Scientific Name: Ilex
Native: East Asia, South America
This family is a collection of 400 trees and shrubs with mottled gray bark and, gray, brown twigs. The leaves are alternate, simple, and have toothed margins.
The flowers have 3 to 9 petals, typically in greenish-white, yellowish-white, or creamy-white colors.
The fruit is round and red, yellow, orange, or black drupe.
30. Harbison’s Hawthorn
Scientific Name: Crataegus harbisonii
Native: Limestone soils of Percy Warner Park in Nashville, Tennessee
Harbison’s Hawthorn is usually a small tree about 8 m tall, 25–30 cm in diameter.
The bark is gray to brown, scaly, furrowed, chestnut brown in color, armed with lustrous, straight brown or nearly blackthorns, 3-5 cm long.
The leaves are alternate and slightly lobed with white, circular flower petals.
!! Suggested: How to identify Harbison’s Hawthorn !!
Hopefully, this guide has helped you identify trees, starting with the letter H.
Your suggestions for more species and genera are most welcome.
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