210 Mdxon — A Nnc Fern from P(ni() Biro. 



Type in tlie U. S. National Herbarium, No. 40,035, being No. 2240 of 

 Sintenis' Porto Rican plants; collected at Cayey, October 5, 1885. The 

 type specimen is the only representative in the National Herbarium of the 

 several numbers cited by Krug. Other Porto Rican specimens are : Goll, 

 No. 342, and Heller, Nos. 536 and 6095. A single Cuban plant in the 

 D. C. Eaton herbarium we also refer here. 



Of the true P. rJiizophylliim* we have seen excellent specimens from 

 Jamaica, the type locality ; and the illustration of a Jamaican plant by 

 Hooker and Grevillef is thoroughly characteristic of these. The compar- 

 atively short broad tapering apices, as figured, offer a very noticeal)le dif- 

 ference to the uniformly linear long-attenuate extremities of P. Krugii. 

 The Guadeloupe plant cited by Krug (I. c.) under rhizopliyllum we have not 

 seen. 



*Polystichuni rhizophyllum (Sw.) Presl, Tent. I'terid. 82. 1836. 



Poli/pndiutii rhiznythyUuin Sw. Prodr. Veg. Iiid. Ooc. 132. 1788. 



Aspidhim rliizopht/llum Sw. Schrad. .lourn. Bot. 1800^ : 31. l.SOl. 

 t Hooker and Greville, Icones Filieum l : pL n'j. 1829. 



