Pinus devoniana

Pinus devoniana
Pinus devoniana
Conservation status
Least Concern  (IUCN 2.3)
Scientific classification
Kingdom:	Plantae
Division:	Pinophyta
Class:	Pinopsida
Order:	Pinales
Family:	Pinaceae
Genus:	Pinus
Species:	P. devoniana
Binomial name
Pinus devoniana Lindl. (Lindley 1839)
Natural range of Pinus devoniana
Synonyms
Pinus michoacana

Pinus devoniana is a species of conifer in the Pinaceae family. It is found in Mexico - from S. Sinaloa to Chiapas - and Guatemala in montane, relatively open pine or pine-oak forests at altitudes from 900 to 2500 m.^[1]

Pinus devoniana, which is locally called “Pino blanco”, “Pino lacio” or “Pino prieto”, is a tree of medium size, which can grow 20–30 m. tall, with a dbh to 80–100 cm. It has curved foliage twigs and very long needles, from 25–40 cm. in fascicles of 5. The cones, which grow solitary or in whorls of 2-4 on thick, short peduncles, leaving a few scales on the branch when falling, are usually large and often curved, 15–35 cm. long and 8–15 cm. wide when open.^[2]

Pinus devoniana is closely related to Pinus montezumae (the Montezuma Pine).^[3] These species are sometimes difficult to distinguish, while hybrids probably occur. The cones are especially variable. Overall, both foliage and cones are larger in Pinus devoniana.^[4]

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  Cone
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  Male "flowers" of Pinus devoniana at Hackfalls Arboretum
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  Bark

References

1. Farjon et al. 1997, p. 58, Farjon 2001, p. 175
2. Farjon et al. 1997, p. 58, Farjon and Styles 1997, p. 137
3. Kent 1900, p. 345, Dallimore and Jackson 1954, p. 504 and Farjon 1984, p. 115 treat P. devoniana as a synonym of P. montezumae
4. Farjon et al. Kew 1997, p. 58

Literature and sources

• Dallimore, W. and Bruce Jackson – A handbook of Coniferae. Edward Arnold Publishers, London 1923, 2nd ed. 1931, 3rd ed. 1948, reprinted 1954
• Farjon, Aljos – Pines; drawings and descriptions of the genus Pinus. Brill/Backhuys, Leiden 1984
• Farjon, Aljos, Jorge A. Perez de la Rosa & Brian T. Styles (ill. Rosemary Wise) – A field guide to the Pines of Mexico and Central America. Royal Botanic Gardens, Kew, in association with the Oxford Forestry Institute, Oxford 1997
• Farjon, Aljos and Brian T. Styles – Pinus (Pinaceae); monograph 75 of Flora Neotropica. New York Botanical Gardens, New York 1997
• Farjon, Aljos – World checklist and bibliography of Conifers. Second edition. Royal Botanic Gardens, Kew 2001
• IUCN - Conifer Specialist Group 1998: Pinus devoniana in 2006 IUCN Red List of Threatened Species. Conservation status downloaded on 10 July 2007.
• Kent, Adolphus H. – Veitch's Manual of the Coniferae. James Veitch & Sons, Chelsea 1900.
• Lanyon, Joyce W. - A card key to Pinus based on needle anatomy. Min. for Conservation, Sydney, New South Wales, Australia 1966