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Dendritic growth of crystals in two dirnensions is analyzed by a Green's-function rnethod. A one-sided diffusional rnodel is treated in quasistationary approxirnation. Anisotropy is found necessary for dendritic growth. We find scaling with anisotropy to be in agreernent with recent results for needle crystals in the symmetric model. For fixed anisotropy the growth rate is proportional to the Square of the Peclet nurnber. The side-branch pattern is in qualitative agreement with experirnents in three dirnensions for different anisotropies.

Dendritic crystallization: Numerical study of the one-sided model