488 Willis. — Plant Invasions of New Zealand. 
41. Orchidaceae (KNH) 
92. Clinostigma Mooreanum 
H 
80. Dendrobium gracilicaule 
H 
93. HOWEA B ELMORE ANA 
H 
81. Moorei 
PI 
94. TORS TER I AN A 
H 
82. brae hy pus 
N 
95. Rhopalostylis Bauer i 
N 
83. macropus 
N 
96. Cheesemanii 
K 
84. Bulbophylliim argyropus 
N 
47. Pandanaceae (NH) 
85. Cleisostoma erectum 
H 
97. Pandanus Forsteri 
H 
42. Amaryllidaceae (N) 
98. Freycinetia Baueriana 
N 
86. Crinum Norfolkianum 
N 
48. Cyperaceae (KNH) 
43. Iridaceae (H) 
99. Mariscus haematodes 
NH 
87. Moraea Robinsoniana 
H 
1 00. Cladium insulare 
H 
44. Liliaceae (KNH) 
1 01. Car ex Neesiana 
N 
88. Rhipogonum dubium 
N 
49. Gramineae (KNH) 
89. Cordyline obtecta 
N 
102. Imperata Cheesemanii 
K 
45. Juncaceae (H) 
103. Panicum Norfolkianum 
N 
90. Luzula longiflora 
Ii 
104. Poa polyphylla 
K 
46. Palmaceae (KNH) 
91. HEDYSCEPE CANTER- 
BURY ANA 
H- 
105. Triticu?n Kingianum 
N 
These sum up to 105 species, belonging to 81 genera and 49 families. Of 
these 63 belong to 44 genera and 33 families which occur in New Zealand, 
while 38 species of 33 genera more belong to families that occur (though not 
the genera) in New Zealand. Thus, as predicted, the greater proportion occur 
in genera that have reached New Zealand, whilst nearly all the families that 
contain endemics have also reached that country, including the families 
(Saxifragaceae, Gesneriaceae, Palmaceae) that contain the endemic genera 
( Colmeiroa, Negria , Hedyscepe, Howea ). 
The families that contain endemics and do not reach New Zealand are 
Sterculiaceae, Celastraceae, Styracaceae (Symplocaceae), and Asclepiadaceae, 
each with one endemic species only, and represented, the first two each by 
the endemic species only in Norfolk Island, the third by the endemic only in 
Howe, and Asclepiadaceae by the endemic Tylophora in both Norfolk and 
Howe, and by Vincetoxicuni carnosum and Marsdenia rostrata , both 
Australian species, in Howe. 
The genera that contain endemics and do not reach New Zealand 
belong, all but these four, to families that reach New Zealand. They are 
Abutilon , Unger ia , Evodia, Acronychia , Elaeodendron , Millettia , Guioa, 
COLMEIROA, Acicalyptus , Bryonopsis, Melothria, Randia, Psychotria, 
Scaevola , Symplocos , Notelaea, Alyxia, Melodinus , Tylophora , NEGRIA, 
Achyranthes , Cryptocarya , Wikstroemia , Baloghia , Homalanthns , Celtis , 
Ficus , Procris , Cleisostoma , Crinum, Moraea, HEDYSCEPE , Clinostigma , 
HOWEA , Pandanus, Panicam , Triticum. Most are represented by one 
species only, but Evodia has two, Alyxia three, and Boehmeria three. 
(13) It is evident, on my hypothesis, that the endemics should belong 
to the families that have been longest in the islands, i.e. on the whole to the 
largest families. In actual fact they belong to 49 families with 1 57 genera, 
or 3*2 genera per family, while the families that contain no endemics are 34 
with 49 genera, or 1*4 genera per family. Twenty-three families with 3 or 
more genera contain 64 of them, 16 with 2 genera contain 16, and 44 with 
one genus contain 25 only* 
