Host: Edwardsia tetraptera (J. Miller) Oliver (= Sophora tetraptera J. Mill.). On branches. Herb. No. 763. Brightwater (Nelson), 200 m., C: Nash ! W. C. Hyde! G. H. C. 18 May, 1922. (Type.)

0. Unknown
I. Aecidia caulicolous, crowded in longitudinal groups, seated. on fusiform swellings up to 7 cm. long,. forming large fastigiate distortions, orange-yellow. Peridia cupulate, shortly erumpent, standing above the surface 0.25 mm., 0.5 mm. diam., expanded and slightly revolute, becoming lacerate, finally eroded, tinted yellow. Spores polygonal or elliptical, 27-32 X 18-21 mmm.; epispore hyaline, densely and minutely verruculose, 1 mmm. thick, cell-contents granular, lemon-yellow.

0. Incognitis. I. Aecidiis caulicolis, in catervis longis, in tumerosis fusiformibus, ad 7 cm. longis, magnis fastigiatis distortionibus factis luteis. Peridiis cupulatis, breviter erumpentibus, 0.25 mm. altis, 0.5 mm. latis, pateris subtiliter revolutus, laceratis demum erosis, tinetis luteis. Aecidiosporis polygoniis vel ellipticis, 27-32 X 18-21 mmm.; episporio hyalino, solide subtiliter verruculoso, 1 mmm. crasso, contentu granuloso, luteo.

The host is indigenous and widespread; it occurs also in Lord Howe Island, Easter Island, Juan Fernandez, and Chile. (Cheeseman, 1906, p. 123.)
This rust forms conspicuous " witch's-brooms " on the host. A branch becomes infected near the tip, and further outward growth is prevented. In the vicinity of the infected area numerous short laterals are produced; these in turn may give rise to tertiary laterals, until the whole assumes a dense and shrubby appearance. Infected shoots become swollen to several times their normal thickness, and in these inflated areas the aecidia appear. The mycelium is perennial, and material may be collected from infected plants throughout the year.
I am indebted to Mr. C. Nash and Mr. W. C. Hyde for assistance in procuring these specimens.

Hab.: In caulibusque Edwardsiae tetrapterae (J. Mill.) Oliver. Brightwater, Nelson, New Zealand, 200 m. C. Nash, W. C. Hyde, G. H. C.