Juniperus procera

Description

Juniperus procera is a medium-sized tree reaching 20–25 m (rarely 40 m) tall, with a trunk up to 1.5–2 m diameter and a broadly conical to rounded or irregular crown. The leaves are of two forms, juvenile needle-like leaves 8–15 mm long on seedlings, and adult scale-leaves 0.5–3 mm long on older plants, arranged in decussate pairs or whorls of three. It is largely dioecious with separate male and female plants, but some individual plants produce both sexes. The cones are berry-like, 4–8 mm in diameter, blue-black with a whitish waxy bloom, and contain 2–5 seeds; they mature in 12–18 months. The male cones are 3–5 mm long, and shed their pollen in early spring.

Distribution

Juniperus procera is native to the Arabian Peninsula (in Saudi Arabia and Yemen), and northeastern, eastern, west-central, and south tropical Africa (in the Democratic Republic of the Congo, the Republic of the Congo, Djibouti, Eritrea, Ethiopia, Kenya, Malawi, Mozambique, Somalia, Somaliland, Sudan, Tanzania, Uganda, Zambia, and Zimbabwe).

It is the only juniper to occur south of the equator, and is thought to be a relatively recent colonist of Africa; the species shows very little of the variability associated with a long period of evolution. It is closely related to Juniperus excelsa from southwestern Asia, probably deriving from a common ancestor with that species in southwestern Asia.

Taxonomy

According to Tropicos, Juniperus procera was originally described and published in Synopsis Coniferarum 1847. The type specimen was collected from Ethiopia, by "Schimper" (possibly Wilhelm Philipp Schimper, but there were other contemporary collectors with this surname).

Uses

It is an important timber tree, used for building houses, poles, and furniture. The bark is used for beehives.

File:Juniperus procera 2.jpg|East African juniper, northern Tanzania File:Juniperus procera 3.jpg|East African juniper, northern Tanzania File:Juniperus procera cones.JPG|East African juniper, northern Tanzania File:Juniperus procera fence stakes.JPG|East African juniper, used as termite resistant fence stakes

References

References

1. Farjon, A.. (2013). "''Juniperus procera''".
2. "Name – ''Juniperus procera'' Hochst. ex Endl.". [[Missouri Botanical Garden]].
3. (2010). "TPL, treatment of ''Juniperus procera''". [[Royal Botanic Gardens, Kew]] and Missouri Botanical Garden.
4. {{GRIN
5. Christopher J. Earle. (April 14, 2009). "The Gymnosperm Database – ''Juniperus procera''".
6. Farjon, A.. (2005). "Monograph of Cupressaceae and Sciadopitys". Royal Botanic Gardens, Kew.
7. Stephano Endlicher. (1847). "''Synopsis Coniferarum''". Sangalli [together with] Scheitlin & Zollikofer.
8. "Inmagic DB/Text WebPublisher PRO: 1 records".