248 PROCEEDINGS OF THE AMERICAN ACADEMY. 
Heller in May, 1899. Thirty-three plants have been found on it, includ- 
ing 4 grasses, 3 Huphorbiaceae, and 3 Malvaceae, but no ferns, no Rubia- 
ceae, and no Compositae. Gardner is the only one of the Galapagos 
Islands which on botanical exploration has yielded no peculiar plant. 
Baur (2), 233, speaks of the flora of Gardner as being the same as that 
of Hood, and doubtless there is great habital similarity, but of the 33 
plants known to grow on Gardner, only 22 have been found on Hood, 
while no less than 31 have been observed on Charles. 
Hoop Isianp. 
Hood is a desert island of elliptical form, lying to the southeast of the 
other islands. It is nearest Chatham, Barrington, Gardner, and Charles. 
According to Dr. Baur, it is a low tableland with few peaks, the highest 
only 200 m. in altitude, and thus still wholly within the lower dry strata 
of the atmosphere. There are no trees of size on Hood, and the ground 
is strewn with large angular masses of rock. Dr, Baur states that cacti 
are here less abundant than on the other islands, and that the Opuntia 
is short and thick-stemmed. Hood Island has also been visited for 
botanical purposes by Dr. Habel, Professor Lee, and by Messrs. Snod- 
grass and Heller. Altogether 55 different plants are known to occur on 
the island; of these only two are peculiar to it, namely: Amaranthus 
sclerantoides, forma hoodensis, a mere leaf form, and Acanthospermum 
lecocarpoides, a well marked species. Of the plants of Hood, 20, or 
about 36 per cent, are peculiar Galapageian forms. ‘here are no ferns, 
8 grasses, 7 Leguminosae (including the Brazilian Geoffraea superba, not 
collected elsewhere in the Galapagos), 5 Convolvulaceae, 5 Boraginaceae, 
and 6 Compositae. There are no Rubiaceae and only 3 Euphorbiaceae. 
About three-fourths of the plants of Hood are also found on the lower 
arid slopes of Charles and Chatham Islands, while only about one-third 
of them have been observed on Indefatigable. 
INDEFATIGABLE ISLAND. 
Indefatigable is one of the larger islands, and is centrally situated in 
the archipelago. It is broadly elliptical, some 32 km. in diameter, and 
formed of a single, rather symmetrical voleanic mountain, rising to 4 
considerable height. In the basin of the cone is a large area of well- 
watered land, which, according to Captain Tanner, possesses considerable 
natural resources. Indefatigable was first explored botanically by 
_ Andersson, who could, however, spend only a few hours upon it. It has 
