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Подсолнечник

Seedling has emerged and the first leaf beyond the cotyledons is less than 4cm long.
V (number)
Vegetative Stages (e.g. V-1, V-2, V-3 etc.)
Determined by counting the number of true leaves at least 4cm in length beginning as V-1, V-2, V-3 etc. If senescence of the lower leaves has occurred, count leaf scars (excluding cotyledons).
R1 Reproductive Stages
The terminal bud forms a miniature floral head rather than a *cluster of leaves*.
When viewed from directly above, the immature bracts have a many-pointed star-like appearance.
R2
The immature bud elongates 0.5 to 2.0cm above the nearest leaf attached to the stem.