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Pinaceae Lindley, Fl. Pak. 6-15. 1987.
Monoecious resiniferous trees with needle‑shaped or scale leaves spirally arranged. Male cones with scale‑like bracts at base; scales numerous with 2 microsporangia per scale. Female cones enlarged and woody at maturity with many spirally disposed bract scales. Fruit a woody cone.
10 genera and c. 250 species in temperate regions of the northern hemisphere, Sumatra, Java, C. America and W. Indies. Represented in Pakistan by 4 genera and 9 species, 2 are adventive.
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| 1 |
Mature leaves borne on long shoots, solitary; short shoots absent. |
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(2) |
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Mature leaves borne on short or long shoots in whorls or fascicles. |
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(3) |
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| 2 (1) |
Leaves linear flattened in cross section, not borne on peg like projections. Cones erect. Sporangia opening by transverse slits. |
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Abies |
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Leaves needle like, quadrangular in cross section, borne on peg like projections. Cones pendulous. Sporangia opening by longitudinal slits. |
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Picea |
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| 3 (1) |
Leaves short, needle like, spiral on long shoots; fascicled on dwarf ones. Cones erect, only scales falling of at maturity. Male cones solitary on dwarf branches. |
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Cedrus |
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Leaves scale like on long shoots; short shoots with long acicular leaves. Male cones clustered at the base of young dwarf shoots. |
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Pinus |
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Lower Taxa
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