476 Willis. — Plant Invasions of New Zealand. 
There is so distinct- a group with maxima in the far south, comprising 
a great part of eighteen families (10, p. 359), that I am inclined to think that 
they formed a separate southern invasion, but as I have pointed out (10, 361), 
the origin of this invasion is a complex question that must be left for the 
present unanswered, though I am inclined to put it down to Antarctica. It 
is conceivable, though improbable, that its route was along the southern 
side of the bridge by which the western invasion probably arrived. 
There follows a complete list of the New Zealand genera, giving in each 
case the invasion to which I incline to attribute it, whether northern (N), 
northern by the Kermadecs (K), western (W), southern (S), and giving also 
the northern islands, Kermadecs (K), Norfolk (N), or Lord Howe (H), on 
which they occur. 
Table II. 
The first entry after the name of a genus, e. g. SW, refers to the invasion or invasions (Northern, 
Kermadec, Western, or Southern) to which the general distribution of its endemics (and wides when 
they do not range the whole length of New Zealand) points. 
A ? after a letter refers only to that letter, e. g. S W ? means pretty certainly S and perhaps W. 
The second entry (K, N, H) refers to the islands (Kermadecs, Norfolk, Howe) in which the 
genus is found. 
Genera in brackets (in small letters) occur only in the Kermadecs in the New Zealand area. 
Genera in capitals are endemic ; if in brackets endemic in the Chathams or Aucklands. 
DICOTYLEDONS Invasion. 
Islands. 
DICOTYLEDONS 
Invasion. 
Islands. 
1. Ranunculaceae 
27. HOHER 1 A 
1. Clematis 
W 
NH 
28. Gaya 
S 
— ■ 
2. Myosurus 
W? 
— 
29. Hibiscus 
N 
^NH 
3. Ranunculus 
SW? 
N 
11. Tiliaceae 
4. Caltha 
WS 
— 
30. ENTELEA 
2. Magnoliaceae 
31. Aristotelia 
W? 
r ; ; ’ 
5. Drimys 
WN 
H 
32. Elaeocarpus 
W? 
— 
3. Cruciferae 
12. Linaceae 
6. Nasturtium 
W? 
N 
33. Linum 
w? 
N 
7. Cardamine 
S 
K 
13. Geraniaceae 
8. Sisymbrium 
w 
— 
34. Geranium 
w? 
KN 
9. PACHYCLADON 
35. Pelargonium 
w? 
NH 
10. Capsella 
2 
— 
36. Oxalis 
w? 
KH 
11. Lepidium 
SW 
H 
14. Rutaceae 
12. NOTOTHLASPI 
37. Phebalium 
N 
— 
4. Violaceae 
38. Melicope 
N. 
KH 
1 3. Viola 
WS 
N 
15. Meliaceae 
14. Melicytus 
WN 
KN 
39. Dysoxylum 
N 
NH 
15. Hymenanthera 
w 
NH 
16. Olacineae 
5. Pittosporaceae 
40. Pennantia 
NW 
N 
16. Pittosporum 
N 
KNH 
17. Stackhousiaceae 
6 . Caryophyllaceae 
41. Stackhousia 
W 
— 
17. Gypsophila 
W? 
— 
1 8. Rhamnaceae 
18. Stellaria 
SW 
— 
42. Pomaderris 
N 
— 
19. Colobanthus 
s 
— 
43. Discaria 
W? 
■ — . 
20. Spergularia 
2 
— 
19. Sapindaceae 
7. Portulacaceae 
44. Dodonaea 
N 
NH 
21. Claytonia 
s 
— 
45. Alectryon 
N 
— 
22. Montia 
s 
— 
20. Anacardiaceae 
23. HECTORELLA 
46. Corynocarpus 
KW 
IC 
8. Elatinaceae 
21. Coriariaceae 
24. Elatine 
2 
— 
47. Coriaria 
WN 
K 
9. Hypericaceae 
22. Leguminosae 
25. Hypericum 
w ? 
— 
48. CORALLOSPARTIUM 
10. Malvaceae 
49. Carmichaelia 
WS 
H 
26.. Plagianthus 
w? 
— \ 
50. NO TO SPAR TI UM 
