Definition of hastulaCategorized under "General"
Definition as written by palmbob:
A thin, curved, stiff \'flap\' of tissue on some palmate palm leaves right where the petiole attaches to the leaflets. It can be large/small and protrude up or down... or not be there at all. Its shape and size will sometimes help identify certain species from others.
It can be seen on some of these leaves as a light colored semicircle at the base of the leaflets where they start fanning out. This species, Trachycarpus takil, is supposed to have an offset or assymetrical hastula in mature species- these look symmetrical in this seedling.
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