R. AUSTRALIS, from New Zealand, is a very prickly species, with the leaves reduced to their stalks and the midribs of three leaflets.

The leaves are rolled towards the midrib on the upper face (involute).

Under a glass they can be seen to be ovate, folded on the midrib with the inner face within (conduplicate), and with an ovate scale joined to the base of the leaf on either side.

The trunks rose tall and strong and slender, and the fronds were branches twenty or thirty feet long, with the many long, narrow green blades starting from the midrib at right angles in pairs.

"All the parallel veins that you've spoken of are like Ethel Blue's lily of the valley leafthe ribs run from the stem to the tipbut there's another kind of parallel veining that you see in the pickerel weed that's growing down there in the brook; in that the veins run parallel from a strong midrib to the edge of the leaf.