25 - Araucariaceae
from Division 4 - Pinophyta
Summary
Dioecious or monoecious, evergreen, resinous trees. Leaves spirally arranged, broad and flat, many-veined. Male strobili large, cylindrical; microsporophylls with 5–15 pendulous microsporangia; pollen grains wingless. Cones subglobose to ovoid, maturing in 2 to 3 years, rather large, erect; scales with large, fused, woody bracts, each bearing one inverted ovule. Seeds adnate to the bract and falling with it.
Contains three genera and 40 species in South America, Malaysia, Indonesia and the Philippines to Australasia.
Araucaria Juss.
Columbea Salisb. nom. illegit.
Dioecious, rarely monoecious, evergreen, resinous trees. Branches regularly whorled. Buds inconspicuous. Leaves spirally arranged, usually scale-like. Male strobili terminal, solitary or in clusters. Cones large, subglobose or ovoid, ripening in 2 to 3 years; scales breaking apart from the central axis at maturity; ovules one per scale to which they are united. Seeds usually winged at margin.
Contains 19 species, found in southern Brazil, southern Chile, south-west Argentina, Australia, New Caledonia and New Guinea.
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- Flora of Great Britain and Ireland , pp. 112 - 113Publisher: Cambridge University PressPrint publication year: 2018