Vol. I] STEWART— BOTANY OF THE GALAPAGOS ISLANDS 21 



Histiopteris Agardh. 



H. incisa (Thbg.) J. Sm. Hist. Fil. 295 (1875). Pteris 

 incisa Thbg. Fl. Cap. 733 (1823); Rob. (1), 114.— Abing- 

 don IsL. : occasional around 1950 ft. (no. 997), Albemarle 

 IsL. : Villamil, common in the upper moist regions (nos. 

 998, 1000). James Isl. : James Bay, abundant in the moist 

 regions (no. 999). Further distr. general in tropical regions. 



Hymenophyllum Sm. 



H. hirsutum (L.) Sw. Schrad. Jour. 1800, 2, 99 (1801). 

 Trichomanes hirsutum L. Sp. PI. 1098 (1753). — Chatham 

 Isl. : Wreck Bay, abundant in moist shady places around 

 1750 ft. (no. 898). Further distr. Mex., W. Ind., Brazil, 

 Mascarine Ids. 



H. polyanthos Sw. Schrad. Jour. 1800, 2, 102 (1801).— 

 Duncan Isl. : in dense tufts on the southeast sides of rocks 

 at 1300 ft. (no. 899). Widely distr. in tropical regions. 



Hypolepis Bernh, 



H. repens (L.) Presl, Tent. Pterid. 162 (1836). Lon- 

 chitis repens L. Sp. PI. 1078 (1753). H. repens. Presl, 1. c. ; 

 Rob. (1), 109. — Galapagos Ids.: Capt. Wood. Further 

 distr. Mex., W. Ind., S. Am. 



Nephrolepis Schott 



N. biserrata (Sw.) Schott, Gen. Fil. ad t. 3 (1834). As- 

 pidium biserratum Sw. Schrad. Jour. 1800, 2, 32 (1801). N. 

 acuta Presl, Tent. Pterid. 79 (1836); Rob. (1), 110.— Ab- 

 ingdon Isl. : forming heavy brakes above 1650 ft. (nos. 916- 

 917). Albemarle Isl.: Villamil, abundant in the vicinity 

 of the shore, forming brakes 6 or more ft. in height. The 

 area in which this fern occurs at this place is very limited and 

 its presence here is due to several seepages of comparatively 

 fresh water coming down from the upper parts of the island 

 through crevices in the lava. This is one of the very few 

 places on the islands where ferns occur at sea level, (no. 921). 



