278
COMPOSITÆ.
[Olearia.
A. Heads large, 1–3 in. diam., solitary or racemed. | |
* Heads radiate, very large, solitary on a long naked peduncle. | |
Leaves 4–6 in. long, oblong or obovate, entire. Heads 2–3 in. diam. | 1. O. insignis. |
** Heads radiate, solitary on bracteate peduncles (racemed in O. Traillii). | |
Leaves 1½–2½ in., linear or linear-lanceolate. Peduncle slender. Rays purple | 2. O. semidentata. |
Leaves 1–3 in., elliptic-lanceolate to oblong-obovate. Peduncles slender. Rays purple or white | 3. O. chathamica. |
Leaves 2–4 in., obovate-lanceolate. Peduncles stout; bracts numerous, short, close-set. Rays white; disc-florets yellow | 4. O. operina. |
Leaves 3–5 in., narrow-lanceolate. Peduncles stout; bracts lax, long, foliaceous. Rays white; disc-florets purple | 5. O. angustifolia. |
Leaves 3–6 in., lanceolate or obovate-lanceolate. Heads racemed. Rays white; disc-florets purple | 6. O. Traillii. |
*** Heads discoid, racemed. | |
Leaves 2–6 in., obovate or obovate-oblong, acutely serrate | 7. O. Colensoi. |
Leaves 4–8 in., orbicular-ovate, doubly crenate | 8. O. Lyallii. |
B. Heads small, 16–12 in. diam., panicled or corymbose (solitary in O. nummularifolia). Florets 6–24. | |
* Leaves opposite. | |
Leaves 1½–2½ in., oblong. Panicles axillary. Heads discoid | 9. O. Traversii. |
Leaves 2–4 in., elliptic-lanceolate. Heads radiate | 10. O. Buchanani. |
** Leaves alternate, large, 1½–4 in. long (less in O. suavis), ovate to oblong, more rarely linear-oblong or oblong-lanceolate, entire or toothed or waved. | |
Leaves 2–4 in., ovate-oblong, obtuse, coriaceous, shining beneath. Florets 6–12 | 11. O. furfuracea. |
Dwarf shrub. Leaves 1–2 in., oblong-ovate, excessively coriaceous, silvery beneath. Heads ½ in. diam. Florets 15–20 | 12. O. Alloniii. |
Leaves 1½–3 in., broadly ovate, acute, rather thin, satiny beneath. Florets 15–20 | 13. O. nitida. |
Leaves 2–4 in., broadly ovate, coriaceous, sharply and coarsely toothed | 14. O. macrodonta. |
Leaves 2–4 in., linear-oblong or lanceolate, coriaceous, spinous-toothed | 15. O. ilicifolia. |
Leaves 2–6 in., broadly ovate, rather thin, toothed, white with soft tomentum beneath | 16. O. Cunninghamii |
Leaves 1½–3½ in., oblong-lanceolate, acute, obscurely sinuate-dentate | 17. O. excorticata. |
Leaves ¾–1½ in., linear-oblong or oblong, obtuse, entire or obscurely sinuate | 18. O. suavis. |
*** Leaves alternate, 3–7 in. long, linear or narrow-linear; lateral veins conspicuous beneath, at right angles to the midrib. | |
Leaves 3–7 in., ½–1 in. broad, linear or narrow-linear, ferruginous beneath | 19. O. lacunosa. |
Leaves 5–6 in., ¼ in. broad, very narrow-linear | 20. O. alpina. |