Ligusticum.]
UMBELLIFERÆ.
215
A genus of from 30 to 40 species, widely distributed throughout the Northern Hemisphere, in the Southern Hemisphere confined to New Zealand, with the exception of a few species found in South America and one in Australia. All the New Zealand species are endemic.
| A. Leaves 2–3-pinnate or decompound. | |
| * Tall, stout, leafy, 2–4 ft. high or more. | |
| Very tall and stout, 3–6 ft. Leaves 2-pinnate; leaflets ovate-oblong, decurrent at the base; lobes pungent | 1. L. latifolium. |
| Robust, 2–4 ft. Leaves 2–3-pinnate; ultimate segments linear-subulate, pungent | 2. L. antipodum. |
| Stems 3–5 ft., without milky juice. Leaves 3-pinnate; leaflets ovate; lobes acute; petioles with a hooded ligule | 3. L. acutifolium. |
| Stems 1–2 ft., with milky juice. Leaves 2–3-pinnate; leaflets ovate, cuneate at the base; lobes broad, obtuse; petioles without a ligule | 4. L. intermedium. |
| Stems 1½–2½ ft. Leaves 2–3-pinnate; leaflets oblong, cut into narrow obtuse lobes | 5. L. Lyallii. |
| Stems 1–2 ft. Leaves 2–4-pinnate; leaflets cut into narrow-linear piliferous lobes. Styles slender | 6. L. Haastii. |
| ** Small, 4–15 in. high, rarely taller. | |
| Slender, 5–15 in. Leaves flaccid, 2-pinnate; leaflets cut into filiform hair-pointed lobes. Styles short | 7. L. brevistyle. |
| Stout, 5–15 in. Leaves coriaceous, 2–3-pinnate; leaflets cut into linear rigid and pungent lobes | 8. L. dissectum. |
| Very slender, 5–15 in. Leaves membranous, 2–3-ternately divided; leaflets few, flat, linear or filiform, acute | 9. L. filifolium. |
| Stout, 2–6 in. Leaves deltoid, membranous, 2-ternately divided; leaflets cuneate-deltoid, deeply incised | 10. L. deltoideum. |
| Stout, thick, and fleshy, 3–6 in. Leaves few, 2–3-ternately multifid. Involucral bracts like the leaves, very large, overtopping the umbel | 11. L. carosulum. |
| Slender, spreading, 6–12 in. Leaves 1–2-pinnate; leaflets distant, cut into narrow-linear acute lobes. Umbels simple, 6–10-flowered | 12. L. patulum. |
| B. Leaves pinnate or 3-foliolate. | |
| Stout, 8–4 in. Leaflets large, ovate-deltoid, toothed or lobed; lobes piliferous | 13. L. piliferum. |
| Slender, 2–12 in. Leaflets small, orbicular or flabellate, toothed or incised | 14. L. aromaticum. |
| Small, densely tufted, 1–3 in. Leaves imbricate; leaflets palmately 3–6-lobed, bristle-pointed | 15. L. imbricatum. |
| Stout, depressed, 3–4 in. Leaflets glaucous, ovate, sharply toothed or lobed | 16. L. Enysii. |
| Minute, ½–2 in. Leaflets 1–2 pairs, flabellate, entire or obscurely crenate | 17. L. flabellatum. |
1. L. latifolium, Hook. f. Handb. N.Z. Fl. 94.—Tall, stout, erect, coriaceous, 3–6 ft. high or more. Stem frequently 3–4 in. diam. at the base, grooved. Radical leaves 1–2 ft. long, coriaceous, deep shinmg green; petioles long, ¾–1 in. diam., broadly sheathing at the base; blade ovate in outline, 2-pinnate; primary divisions 2–6 in. long, linear-oblong; secondary obliquely ovate-oblong with
