OF THE INTERIOR OF WESTERN AUSTRALIA. 239 
d. 5 species are found in extratropical Australia, including the 
S.W. corner and the desert, and also in New Zealand. 
Of which : 
3 [Microseris Forsteri, Deyeuxia Forsteri, Agropyrum 
scabrum] occur in the West Australian desert south of 
30° alone; while 
2 [Senecio lautus, Juncus pallidus] occur in the desert 
both north and south of 30°. 
e. 2 species [Mesembryanthemum australe, Thelymitra longifolia] 
range over extratropical Australia, including the S.W. 
corner and the desert south of 30^, and extend to New 
Zealand and Polynesia. 
J. 1 species [Tillea vertieillaris] is extratropical Australian, 
including the S.W. corner and the desert both north and 
south of 30°, and extends into New Zealand and extra- 
tropical South America. 
g. 13 species of wide extra-Australian distribution are widely 
distributed in Australia including the S.W. corner and 
the desert. Of these: 
3 | Tribulus terrestris, Gnaphalium luteo-album, Boerhaavia 
diffusa] are known from the desert north of 30? alone. 
7 [Alyssum linifolium, Spergularia rubra, Oxalis cornicu- 
lata, Erythrea spicata, Limosella aquatica, Juncus 
bufonius, Scirpus cernuus| do not advance in the 
desert north of 30°, 
3 | Dodonea viscosa, Salsola Kali, Parietania debilis] occur 
in the desert both north and south of 80°. 
h. 1 species [Rhynchosia minima] has the distribution given under 
g, but excluding the S.W. corner. 
i. There remain 11 species, all of which, with two possible 
exceptions, are introductions. They are Raphanus sativus, 
Silene gallica, Erodium cicutarium, Malva parviflora, 
Medicago denticulata, Sonchus oleraceus [? |, Cryptostemma 
calendulacea, Senecio vulgaris [?], Anagallis arvensis, 
Rumex crispus, and Briza mazima. 
The species may be further arranged in tabular form in the 
following manner :— 
