which it has derived the common name of Plunder's limnocharis. 

 Growing in receptacles hanging from the edge of the bridge will 

 also be found two or three species of the genus Salvinia, odd 



House No. io. 



This house is devoted entirely to ferns and their relatives from 

 tropical countries. The species from temperate regions will be 

 found in house no. I 2, on the west side bench. The collection 

 installed in this house is arranged in botanical sequence. Thus 

 closely related families and genera are brought into juxtaposi- 

 tion, offering exceptional facilities for a comparative study of these 

 interesting plants. 



The sequence begins on the north side bench near the entrance 

 from house no. 11 with the Marattiaceae, continues along both 

 sides of the walk around the house, and terminates near the en- 

 trance to house no. 1 1 with the Selaginellaceae. 



Angiopteris, which are peculiar in having thick scale-like bodies, 

 sometimes regarded as stipules, at the base of the fronds, a most 

 unusual feature among the ferns. Following the Marattiaceae 

 come the true ferns, the Filicales, represented by the following 

 families : the floating-fern family, Ceratopteridaceae ; the curly 

 grass family, Schizaeaceae, represented among others by the 

 climbing ferns, Lygodium ; the gleichenia family, Gleicheniaceae ; 

 the tree-fern family, Cyatheaceae, with such genera as Dicksonia, 

 Cybotium, Cyathea, and others [house no. 1 1 should be visited 

 to study large specimens] ; the polypody family, Polypodiaceae, 

 represented by many specimens, among them the stag-horn ferns, 

 Alcicornium, the elephant-ear fern, Hymenodium crinitum, and the 



America. The remainder of the polypody family are across the 

 walk on the central bench and are represented by such genera as 

 Polypodium, Goniophlebium, Phlebodium (including a group of 

 Phlebodium aureum, the golden polypody, known often as Poly- 

 podium aureum, common in Florida and tropical America), Cam- 



