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Volume I (1961) - Flora of New Zealand Indigenous Tracheophyta - Psilopsida, Lycopsida, Filicopsida, Gymnospermae, Dicotyledons
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Umbelliferae

UMBELLIFERAE

Mostly monoec. to dioec. herbs; infl. us. a compound or simple bracted umbel, sts reduced to heads. Fls regular, 5-merous; calyx adnate to ovary, lobes often obsolete; petals us. valvate and inflexed in bud; stamens alt. with petals, seated on epig. disk; anthers 2-celled, dehiscing lengthwise, us. inflexed in bud. Ovary inferior, 2-carpelled; carpels unilocular, with axile placentae. Ovules 1 per locule, pend.; styles 2, often swollen at base and forming stylopodia. Fr. a schizocarp of 2 mericarps cohering by their inner faces (commissure). Mericarps separating at commissural surface, us. remaining long suspended from the apex of a prolongation of the axis (carpophore); flattened to subterete, us. distinctly ribbed. Oil-tubes (vittae), if present, between or below the ribs. Seeds with minute embryo and cop. endosperm. Mostly biennial to perennial herbs with pith-filled furrowed stems; lvs alt., us. pinnately to palmately compound, with sheathing bases. About 130 genera and 3000 spp. of worldwide distribution.

KEY TO SUBFAMILIES AND TRIBES

Key

1
Fr. without free carpophore, us. with continuous layer of oil-bearing cells below epidermis; rarely with ± distinct vittae under main ribs. Seeds surrounded by woody layer ... A. HYDROCOTYLOIDEAE
2
Fr. with free carpophore, with or without distinct vittae (no continuous oil layer); seeds surrounded by soft tissue
3
2
Mericarps flattened laterally, with narrow commissure - Hydrocotyle, Centella; Azorella, Hemiphues
HYDROCOTYLEAE
Mericarps rounded on back or dorsally slightly flattened; commissure broader - Schizeilema
MULINEAE
3
Fls sessile in dense heads; fr. not distinctly ribbed; styles not arising from stylopodia - Eryngium
B. SANICULOIDEAE
Fls pedicelled in umbels; fr. distinctly ribbed; styles arising from stylopodia ... C. APIOIDEAE
4
4
Secondary ribs = or > primary, armed with hooked spinulose bristles - Daucus
DAUCEAE
Secondary ribs 0 or obscure; primary projecting, unarmed
5
5
Seeds grooved on commissural surface - Oreomyrrhis
SMYRNEAE
Seeds flattened on commissural surface
6
6
Primary ribs all alike; wings, if present, narrow; seeds semicircular in section - Apium, Lilaeopsis, Aciphylla, Coxella, Anisotome
AMMINEAE
Primary ribs unequal; lateral broad, winged; seeds narrow in section - Angelica
PEUCEDANEAE

KEY TO GENERA

Key

1
Plant with linear, flaccid, fistular, distinctly transversely septate assimilatory organs arising in clusters from creeping stems; aquatic or subaquatic
10. LILAEOPSIS
Plant not as above
2
2
Lvs irregularly toothed to pinnatifid (occ. simple, linear), in rosettes; producing offset rosettes by means of stolons or rhizomes; teeth spinous; umbels contracted into small heads invested by spinous bracts
6. ERYNGIUM
Lvs and other characters not as above in combination
3
3
Plant forming dense hard rounded cushionlike masses (Macquarie Id)
3. AZORELLA
Plant of more open habit, or if compact then ± flattened to ground
4
4
Plant forming compact ± flat patches; branches hairy, lvs entire, ± fleshy; umbels simple, subtended by 5-(4) conspicious bracts
4. HEMIPHUES
Plant not having all the above characters in combination
5
5
Fr. bearing hooked bristles
7. DAUCUS
Fr. without hooked bristles
6
6
Lvs simple
7
Lvs compound
11
7
Umbels compound
8
Umbels simple
9
8
Plant of tufted to tussock form; lvs of linear order, pungent
11. ACIPHYLLA
Plant lianoid; lvs of orbicular order, not pungent
14. ANGELICA
9
Fr. Tetragonous
5. SCHIZEILEMA
Fr. ± distinctly laterally compressed
10
10
Stipules obvious, scarious; involucre 0; fr. without secondary ribs
1. HYDROCOTYLE
Stipules obsolete; involucre conspicuous; fr. with secondary ribs
2. CENTELLA
11
Lvs and lflts rigid, coriac., pungent
11. ACIPHYLLA
Lvs and lflts membr., or if coriac. then flexible, not pungent
12
12
Involucral bracts absent
13
Involucral bracts present
14
13
Plant creeping; vittae absent
1. HYDROCOTYLE
Plant tufted, straggling; vittae present
9. APIUM
14
Mericarp-ribs not winged
15
Mericarp-ribs, at least some, distinctly winged
16
15
Lvs 3-5-foliolate; fr. tetragonous, vittae absent
5. SCHIZEILEMA
Lvs pinnately divided to decompound; fr. of oblong to ovoid order, vittae present
8. OREOMYRRHIS
16
Ribs subequal, wings narrow
13. ANISOTOME
Ribs unequal, at least some broadly winged
17
17
Lvs with long linear segs; one mericarp 3-, the other 2-(3)- winged
12. COXELLA
Lvs not of linear order; each mericarp with 2 wings and 3 prominent dorsal ribs
14. ANGELICA
Fig. 16. UMBELLIFERAE. Fruits: single mericarps. © All rights reserved. [Image: 4X0Y]
Fig. 16. UMBELLIFERAE. Fruits: single mericarps. © All rights reserved. [Image: 4X0Y]
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