In 1918 I obtained flowers of R. chordorhizos from two plants in my garden at Christchurch brought from Mount Hutt (at c. 4,000 ft.) in 1917. One of those also flowered in 1919. The flowering-date in Christchurch (sea-level) was September. The flower is from 1 in. to 1½ in. in diameter. The petals are from 5 to 8, and even more.
The most striking feature of the flower (hitherto undescribed) is the form of the sepals, which are lobed like the radical leaves, and one of them in each flower is much larger than the rest, lobed and appearing like the cauline leaves which form a sort of involucre in R. Haastii, but attached so much higher that it should rather be termed a bract. The edges of the petals are also lobed shallowly. The colour of the sepals is dark like the leaves. I obtained one head of ripe achenes from my plants. The description of the achene in Kirk and Cheeseman seems to be quite exact.
Specimens of the plants here used were sent to Kew for identification; there are no flowering specimens there, but my plants were identified as R. chordorhizos. The locality (Mount Hutt) is not far from Mount Somers (the original locality), and the plant has been collected by Laing at Mount Winterslow, between Mount Somers and Mount Hutt.