Which of the following descriptions fits best?

Picea; e.g. P. abies

saccate with no constriction between sacci and corpus; corpus finely patterned; large pollen grain

saccate with distinct constriction between sacci and corpus ("Mickey Mouse"); corpus unpatterned; medium-sized pollen grain

saccate; sacci protruding distinctly from the back; thick back wall (somewhat thinner in the middle); large pollen grain

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