FLORA OF THE GALAPAGOS ISLANDS. 245 



Barrington Island. 



Barrington is a small island about 8 km. long, lying between Inde- 

 fatigable and Chatham. It rises only 277 m. above sea-level, and 

 possesses only a xerophytic type of vegetation, with no ferns, no 

 sedges, no Piperaceae, and only two Leguminosae. The island has been 

 visited by Dr. Baur and by Messrs. Snodgrass and Heller, but only 39 

 plants have been secured there. Of these but one Scalesia is confined 

 to the island. The thorny Discaria, the Scalesia, just mentioned, 

 Croton Scouleri, Cordia lutea, G. Jiookeriana, and Maytenus obovata, 

 together with a large and abundant Opuntia, are its shrubby and arbor- 

 escent species, the other plants being herbs of a decidedly xerophytic 

 type, grasses and Evphorbiaceae predominating as to number. Of its 

 40 species, 26 occur upon Charles and Chatham Islands, while but 18 

 have been found on the nearer Indefatigable. Leptochloa mucronata of 

 South America, collected on Barrington, is not known to occur on any 

 of the other islands of the archipelago. 



Bindloe Island. 



Bindloe lies with Abingdon and Tower to the northward of the other 

 chief islands. It is roughly elliptical and about 15 km. long, rising to a 

 height of only 250 m. It appears to have been visited for botanical 

 purposes only by Dr. Baur, 4-5 September, 1891, and Messrs. Snod- 

 grass and Heller, 29 June, 1899. Only 42 different plants have been 

 collected or recorded there, and only 1, a mere leaf form of Castela 

 galapageia, is peculiar to the island, although the continental Canavallia 

 obtusifolia, found upon Bindloe, has as yet been collected upon none 

 of the other islands. Messrs. Snodgrass and Heller report a gigantic 

 Cereus as rare on Bindloe; only one individual was seen. The Opuntia 

 of Bindloe is low, only 3 to 9 dm. in height. More than half the plants 

 of Bindloe occur upon Charles, Chatham, and Albemarle respectively, 

 while the proportion found on Abingdon and Tower is considerably less, 

 and but a single plant of Bindloe has been found on Culpepper and 

 Wenman. 



Brattle Island. 



Brattle is a small islet close to the southeastern shore of Albemarle. 

 It forms, according to Dr. Baur, the remains of a single volcano, the 

 southeast part of which has been nearly destroyed. The island has 

 never been botanically explored. Dr. Baur made repeated efforts to 

 land upon it, but was baffled by the precipitous shores. From his 



