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

CRUCIFERAE

Fls perfect, regular, or nearly so, us. in bractless racemes; sepals 4, petals 4-(0); stamens us. 6, tetradynamous; anthers 2-(1)-celled. Ovary us. of 2 united carpels divided by a thin membrane into "cells"; stigmas 2, often connate; fr. us. dehiscent. Seeds us. without endosperm; cots accumbent [0= ] incumbent [0|| ] or sts conduplicate [0)) ]. Annual to perennial herbs or subshrubs with mostly alt. exstipulate lvs. Subcosmopolitan with some 350 genera and 2500 spp.

Key

1
Fls yellow
6. RORIPPA
Fls not yellow
2
2
Pod at least 3 times as long as wide, a silique
3
Pod < 3 times as long as wide, a silicle
6
3
Seeds in 1 row
4
Seeds in 2 rows, sts irregularly so
5
4
Cots incumbent; hairs stellate, us. dense; pod not dehiscing elastically
7. ISCHNOCARPUS
Cots accumbent; hairs simple or branched but not stellately so, us. sparse; pod dehiscing elastically
4. CARDAMINE
5
Rootstock slender, lvs mainly cauline, valves convex
6. RORIPPA
Rootstock very stout, lvs mainly basal, valves flat or nearly so
5. CHEESEMANIA
6
Seed 1 per cell
1. LEPIDIUM
Seeds 3 or more per cell
7
7
Pods broadly winged
2. NOTOTHLASPI
Pods not winged
8
8
Seeds 3-8 per cell; lvs mainly radical; pubescence stellate
3. PACHYCLADON
Seeds many per cell; lvs mainly cauline; pubescence not stellate
6. RORIPPA

The N.Z. genera are us. placed in the tribes:

1. LEPIDEAE-Fr. a silicle, cots incumbent: 1: Lepidium, 2. Notothlaspi, 3. Pachycladon.

2. ARABIDEAE-Fr. a silique, cots accumbent: 4. Cardamine, 5. Cheesemania, 6. Rorippa.

3. SISYMBRIEAE-Fr. a silique, cots incumbent: 7. Ischnocarpus.

Notothlaspi, Pachycladon are endemic.

Fig. 8. CRUCIFERAE. Silicles: Notothlaspi, Pachycladon, Rorippa, Lepidium. Siliques: Ischnocarpus, Cheesemania. © All rights reserved. [Image: 4X1U]
Fig. 8. CRUCIFERAE. Silicles: Notothlaspi, Pachycladon, Rorippa, Lepidium. Siliques: Ischnocarpus, Cheesemania. © All rights reserved. [Image: 4X1U]
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