Maxon: Jamaican species of polypodium 75 



Polypodiiim myosttroidcs Jenman, Bull. Bot. Dept. Jamaica II. 4 : 

 112. 1897; not Svv. 1788. 

 Apparently confined to Jamaica. 



The species is well characterized by Jenman under the name 

 Polypodium myosiiroides. It is to be distinguished from the true 

 myosuroides : (i) commonly by its pinnatifid condition throughout, 

 though less deeply lobed in the upper (fertile) portion than below ; 

 (2) by its distinct sori, these never entirely confluent with age, a 

 character consequent upon its pinnatifid condition ; (3) by its ap- 

 proximate nearly deltoid lobes, these never remote or subspat- 

 ulate as in myosuroides ; and by numerous less obvious characters 

 as determined from a large series of specimens obtained in Jamaica 

 by Mr. Jenman, Professor Underwood and the writer. 



Schkuhr's original plant, if existent, will stand as the type ; 

 otherwise the type will be sheet no. ^jyyyo, in the U. S. National 

 Herbarium, collected at the Summit of Blue Mountain Peak, alti- 

 tude about 2220 meters, Maxon 1513, April 20, 21, 1903. 

 Underivood 23 jg, in the herbarium of the New York Botanical 

 Garden, has identical data. 



The following note, which is without reference to the foregoing, 



has to do merely with the untenable name saxicohun given by 

 Baker to a Jamaican high-mountain ally o{ Polypodium Dioiiilifornie. 

 The plant occurs entangled with great mats of liverworts and 

 mosses which closely envelope not only rocks but tree-trunks in 

 the higher forested slopes of the Blue Mountains. Its character- 

 istic growth has suggested the following name : 



Polypodium induens nom. nov. 



Polypodium saxicolimi Baker, Jour. Bot. Brit. & For. 15: 264. 

 1877. Not Polypodium saxicola Sw. Vet. Akad. Handl. Stock. 

 1817 : 59. 1817. 



The specimens in the U. S. National Herbarium are : 

 Jamaica. — A sheet without definite locality (ex herb. Botani- 

 cal Dept. Jamaica). Near Morce's Gap, altitude 1500 meters; 

 Maxon 121^ and 2yjo. Highest slopes of John Crow Peak, 

 altitude 1650-1800 meters; Maxon 1324. and 1332. 



U. S. National Museum. 



