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Key to Juniperus of Europe, Canary Islands, Azores, Asia Minor and Africa rev. 2/2011 1a. All leaves acicular (subulate), jointed at the base, in whorls of 3; cones borne axillary
 

Summary: Key to Juniperus of Europe, Canary Islands, Azores, Asia Minor and Africa rev. 2/2011
1a. All leaves acicular (subulate), jointed at the base, in whorls of 3; cones borne axillary
(sections Caryocedrus & Juniperus)
2a. Seed cones 20-25 mm, seeds united to form a stone; male cones in axillary fascicles..
........................................................................................................................................J. drupacea
2b. Seed cones 6-15 mm, seeds free (not united), male cones solitary, axillary
3a. Leaves with one (rarely divided by a faint midrib) broad stomatiferous band above
(adaxial, closest to the stem), seed cones 6 - 9 mm, black when mature (2 - 3 yrs.)..
..................................................................................................................................J. communis
3b. Leaves with two stomatiferous bands above (adaxially); seed cones 6 -15 mm, reddish-
brown to dark purple when mature (1, 2 yrs.)
4a. Fastigiate shrubs to 2 m; seed cones red when mature, 7 - 10 mm; Pliocene sands
near the sea coast of w. Portugal...................................................................J. navicularis
4b. Shrubs or trees; seed cones reddish-brown, to dark purple when mature; leaves up to
25 mm.
5a. Mature seed cones 12 - 15 mm, purple, with 3 distinct leaf impressions (from fused
cone scales); leaves 2 - 2.5 mm wide.......................................................J. macrocarpa
5b. Mature seed cones 8 - 10 mm, reddish- brown to red, globose, without leaf
impressions; leaves 1 - 2 mm wide
6a. Leaves curved, shorter than mature seed cones; shrubs; endemic to Azores.....

  

Source: Adams, Robert P. - Department of Biology, Baylor University

 

Collections: Biology and Medicine