Tetranema roseum (M. Mart. & Gal.) Standley & Steyerm.

Tetranema mexicanum Bentham

Tetranema mexicanum Bentham, Bot. Reg. 29, t. 52, 1843.

SPECIMENS SEEN.—Oahu: Old Pali Road, Neal in 1953 (BISH); Clay in 1956 (BISH); Manoa, Neal in 1940 (BISH). (This sheet is named by the collector Mazus japonicus).

These three specimens are identical and certainly seem to be Tetranema, rather than Mazus. Apparently the Manoa specimen is the only basis of Neal’s (1965:158–159) report of Mazus japonicus from Hawaii. Therefore, Mazus should be deleted from the flora unless other material exists.

The leaves are in rosettes, obovate, crenulate, with scapes up to 15–20 cm, inflorescence umbelloid with proliferations, corolla violet with the three large lobes whitish at least at tips. It is a native of Mexico.

Plantago L.

Plantagos found in ruderal situations and pastures in the Hawaiian Islands are almost certain to be introduced species. Of these there are at least 5 species which may be distinguished by the following key: