Flora of New Zealand Series

H. robusta Kirk Stud. Fl. 1899, 189.

Type locality: Great Barrier Id. Type: W, Port Tryphena, T. Kirk, Dec. 11. 1867.

Stems ± 3 mm. diam., decumbent to suberect. Lvs on short petioles 2-6 cm. long, retrorsely pilose towards sinus. Lamina pilose on both surfaces, 20-25-(30) mm. diam.; lobes 5-7, us. very to rather shallow, us. again shallowly lobulate, member., pale green; margins crenulate to denticulate. Sinus us. deep, narrow. Peduncles rather stout to slender, 1-3 cm. long. Umbels c. 8-12-fld. Rays very short, occ. up to 5 mm. long. Fruiting heads up to 1 cm. diam.; frs c. 2-3 mm. diam., dull brown, very turgid, glab.; mericarps grooved in face (often obscurely so), faintly keeled.

DIST.: N. Sandy beaches on east coast between Waiwera and Mahurangi; Great Barrier Id.

Similar forms occur further south, but I have not seen adequate material. Chatham Id specimens appear to belong here, but have petioles up to 2 dm. long, lamina up to 5 cm. diam.; lobes and lobules deeper; sinus narrow to broad on same plant. I have seen only very immature fr.