276 Wisconsin Academy of Sciences, Arts, and Letters. 



fortia psilostachya, and T. rufo-sericea, many of which are cov- 

 red with vines of Cissampelos Pareira, and Elateriuni cordatum. 

 There are also many ferns among whicli are : Adiantum Henslo- 

 vianum, Asplenium cristatum, Nephrolepis biserrata, Polypo- 

 dium pcctinatum, P. squamatum, and Trachypteris pinnata. 

 Many herbaceous plants also occur in this region. 



There are open areas in the vegetation on the south side of 

 the island between 1,000 and 1,300 ft. elevation, which are cov- 

 ered with grasses and herbaceous plants. These areas extend in 

 a more or less direct way up the side of the mountain, and are 

 bordered by bushes which are heavily covered with a growth of 

 brown Hepatic, probably a species of Frullania. These areas 

 are succeeded above by a heavy growth of bushes and small trees. 



Above 1,650 ft. elevation, extending to the top of the moun- 

 tain, there is a heavy growth of ferns which are often five feet or 

 more in height. Among the ferns there are low stunted bushes 

 of Zanthoxylum Fagara heavily covered with epiphytes. 



The dry region* on this island extends to about 450 ft. on the 

 southeast side, and to about 700 ft. elevation on the southwest 

 side. Judging from the appearance of the vegetation as seen 

 from a distance, this region must extend to an elevation of about 

 1,000 ft. on the north side. The transition region extends to an 

 elevation of about 1,000 ft. on the south and southeast sides, and 

 probably to within a short distance of the top of the north side. 

 There is apparently but a narrow strip near the top, on this side 

 of the mountain, that is covered with dark green vegetation, such 

 as is usually found in the moist region of these islands. All of 

 the country above an elevation of 1,000 ft. is covered with the 

 plants usually found in the moist regions. 



Albemarle Island. 



Albemarle lies towards the west side of the archipelago and is 

 the largest island of the group. It is about seventy-five miles 

 long, and forty-five miles broad at its widest part, which is to- 

 wards the southern end of the island. The island has the gen- 

 eiral shape of the letter L the long limb of which extends in a 

 general northwest and southeast direction. There are five large 



• For a discussion of the botanical regions on these islands see : Stewart, 

 A Botanical Survey of the Galapagos Islands. Proceedings of the California 

 Academy of Sciences, fourth series, vol. I, pp. 206-211. 1911. 



