Spontaneous Hybridization between Pinus mugo and Pinus sylvestris at the Lithuanian Seaside: A Morphological Survey

Figure 4

Putative P. mugo (female) × P. sylvestris (male) hybrid (H S × M, group B in Figure 5, Table 2, ID PD56). Left, monocormic, needles fresh green (mugo, note pure P. mugo trees in the background and to the right with the same fresh green needle colour), upper stem with dark brown flakes (sylvestris), no paper flakes (mugo); upper right: shoots dark green brown glossy (mugo), needles fresh green (mugo), stem unit tip does not bend backwards at the needle sack (sylvestris); lower right: cone apophysis glossy (mugo) medium-thick hook (intermediate), umbo bordered (mugo), rather symmetric (sylvestris).