Portion of mature Frond— upper side. 



GYMNOGRAMMA SULPHUREA. Desvaux. Moore. 

 Kaulfuss. Presl. 



PLATE V. 



Oymnogramme sulphurea, 

 Ceropteris mlplmrea, 

 Acrostichum sulphureuyn, 



KlTNZE. 



Fee. 



SwAETZ. SPBEJfGEL. ScHKUHB. 



Gymnogramma — IN'aked writing. Sulphurea — Sulphur- coloured. 



This exquisitely beautiful Fern is one of the most interesting 

 of the powdery kinds; it should be in every collection. The 

 form of the frond is extremely elegant, the pinnse being in 

 pairs and more widely apart than in Gymnogramma cJiryso- 

 phylla, those nearest the base of the frond are small and of 

 a triangular form, gradually becoming larger and more acu- 

 minate, as they become farther removed from the rhizoma, 

 and attain the greatest length in the centre of the frond. 



It is a native of Jamaica. 



It appears to be a delicate species, requiring considerable 

 care and attention in order to grow it successfully. 



Gymnogramma sulphurea is a stove Fern. 



The fronds are fragile and delicate, attaining a length of 

 from six to ten inches. The upper surface is a pale green 

 colour, whilst beneath it is profusely covered with a brilliant 

 sulphur-yellow farinose powder. The frond, which is bipinnate, 

 has the pinnae of a lanceolate-acuminate form, and with oblong- 

 obtuse pinnatifid pinnules, wedge-shaped at the base, the margin 

 being dentate. The fronds rise out of an erect fasciculate 

 rhizoma. 



