Broussaisia arguta Gaudich. f. ternata C. N. Forbes ex Skottsb., Acta Horti Gothob. 2: 235. 1926.
Type information:
Lectotype [BISH]. C.N. Forbes 940.M. July 1919. Maui: Ukulele.
Lectotypified in H. St. John. Phytologia 34: 148. 1976.

Note: Field book indicates collection date of 25 or 26 July.

=Hydrangea arguta
Note: Field book indicates collection date of 25 or 26 July.

*Verification: R.K. Shannon.