226 The Flora of Guadalupe Island. [ April, 
eal with South American forms (Specularia biflora and Amblyo- 
pappus pusillus), possibly introduced from Chili or Peru, perhaps 
indigenous to both regions. Their presence on Guadalupe would 
perhaps rather favor the belief that they are native to our western 
coast, especially as five other South American species, or forms of — 
them, occur in the Guadalupe flora (Jillea minima, Cilia pusilla, 
Plantago Patagonica, Parietaria debilis, and Muhlenbergia debi- 
lis), which are more or less frequent in California and eastward 
in the centre of the continent, and are generally admitted to be 
native. There are, therefore, ninety-seven phænogamous plants 
which may be considered as indigenous. 
It is evident, therefore, that, as regards the species common to 
the island and the main-land, the flora may be said to be exclu- 
sively Californian in its character. Not a single species is found 
that is peculiar to Lower California or Mexico. The same alli- 
ance is nearly as prominent if we look at the twenty-one new 
phznogamous species of the island. Fifteen of these (a Thysan- 
ocarpus, a Spheralcea, a Lupinus, a Trifolium, an Œnothera, a 
Megarrhiza, a Galium, a Hemizonia, a Perityle,a Beria, a Mim- 
ulus, a Pogogyne, a Calamintha, a Phacelia, and an Atriplex) 
belong to genera largely or exclusively represented in California 
and the region east of it, and are mostly closely allied to the 
species of that region. The remaining six species include 4 
Lavatera, a composite, a borraginaceous plant, a species allied 
to the olive, and finally a palm. The Lavatera is interesting as 
representing a widely scattered genus, not otherwise found in 
America, except as a second species occurs on the more northern 
island of Anacapa. The genus belongs chiefly to the. region 
of the Mediterranean, where fourteen species are native; tw? 
others are confined to the Canary Islands ; another has been dis- 
covered in Central Asia, and still another in Australia. The 
new composite is referred by Dr. Gray to a South American 
genus (Diplostephium), not otherwise represented in our flora, 
_but of which there are eighteen species in the Andes from the 
equator southward. Of the borraginaceous and oleineous species 
Dr. Gray forms new genera; the one (Harpagonella) allied to 
the small genus Pectocarya, of which there is one Chilian species 
and two Californian, one of these also in the Guadalupe floras 
the other (Hesperelea) bearing no close resemblance to any 
other member of the olive family. On the other hand, the palm 
(Brahea (2) edulis), conspicuous on the island as the only rep- 
resentative of a tropical flora, is probably less nearly related to 
Be 
