3. Studies in Ornamental Trees and Shrubs.

By H. M. Hall. (Univ. of California Publications in Botany, vol. 4, pp. 1–71, pls. 1–11; 1910.)

An account with descriptions and remarks of a number of exotic ornamental trees and shrubs cultivated in California. The following are the New Zealand species: Pittospoium tenuifolium, P. crassifolium, P. Ralphii, P. eugenioides, Leptospermum scoparium, L. ericoides, Metrosideros robusta, M. tomentosa.

A yellow-flowered form of Pittosporum tenuifolium has appeared at Berkeley, growing in a row of normal black-flowered plants. This form is unknown in New Zealand, but according to Cheeseman yellow-flowered forms are known in other dark-flowered species.

L. C.