31. O. Hectori, Hook. f. Handb. N.Z. Fl. 128.—An erect much-branched deciduous shrub 5–15 ft. high; branches slender, grooved, glabrous; bark dark red-brown. Leaves in opposite fascicles, variable in size and shape, ¾–1½ in. long, linear-obovate or linear-spathulate to oblong or obovate, obtuse, narrowed into a slender petiole, thin and membranous, glabrous above when mature, silky when young, beneath clothed with thin silvery tomentum; margins flat, entire. Heads in opposite fascicles of 2–5; peduncles ¼–½ in. long, slender, drooping, silky. Involucre broad and shallow, cup-shaped; bracts in 2 series, lax, spreading, linear-oblong or -obovate, obtuse, woolly. Florets 20–25; ray-florets 12–17, small, with a narrow ray; disc-florets about 8, much larger, mouth funnelshaped. Achenes linear-obovoid, grooved, silky.—Kirk, Students' Fl. 274.
South Island: Marlborough—Pelorus Sound, Rutland! Canterbury—Banks Peninsula, J. B. Armstrong. Otago—Lake district, Hector and Buchanan; Kaitangata, Catlin's River, Invercargill, Kawarau Gorge, Matukituki Valley, Petrie! Sea-level to 2500 ft. October–November.
32. O. odorata, Petrie in Trans. N.Z. Inst. xxiii. (1891) 399.—An erect much-branched shrub 6–12 ft. high; branches divaricating, stout, terete, grooved. Leaves opposite, usually fascicled, ⅓–1 in. long, linear-spathulate or linear-obovate, rounded at the tip, narrowed into very short petioles or almost sessile, coriaceous, glabrous or silky above, clothed with soft white tomentum beneath; margins flat, entire. Heads in opposite fascicles of 2–5 on short arrested branchlets; peduncles short, stout, silky. Involucre broadly campanulate; bracts in 3–4 series, linear-oblong, obtuse, dark-brown, viscid and glandular. Florets numerous, 20–35; ray-florets 8–18, short; corolla of disc-florets viscid and glandular. Achenes silky.—Kirk, Students' Fl. 275.
South Island: Mountain districts in Canterbury, Westland, and Otago; not uncommon. 1000–3000 ft. January–February.
Closely allied to O. virgata, but distinguished by the terete branchlets, larger leaves, many-flowered heads, and viscid and glandular involucral bracts.
33. O. laxiflora, T. Kirk, Students Fl. 275.—A large erect much-branched shrub 6–12 ft. high; branches slender, divaricating, sometimes almost pendulous, terete or obscurely tetragonous. Leaves opposite or in opposite fascicles, ½–1 in. long, narrow linear-spathulate or linear-oblong, obtuse, narrowed into very short petioles, coriaceous, glabrous above, beneath clothed with closely appressed white tomentum. Heads numerous, 5–15, in opposite fascicles on short arrested branchlets; peduncles slender, ¾ in. long, glabrate or silky. Involucre campanulate; bracts few, lax, linear-oblong, villous at the tips. Florets 6–8; ray-florets 3–4, broad. Achenes grooved, silky.
South Island: Westland—Hokitika, H. Tipler!
