4 OSMUNDACEAE 



1. T. punctatum Poir. Terrestrial, or rarely epiphytic, 

 very fragrant: rootstocks matted, very slender, finely and 

 softly radiculose: leaves 0.8-2 cm. long; 

 blades flabellate, cuneate, obovate, or orbic- 

 ular-obovate, with a cuneate base, 3-8 mm. 

 wide or sometimes wider, slender-petioled, 

 incised' or incised-lobed, the margins with 

 stellate hairs: indusia solitary or few, usu- 

 ally partly immersed and often narrowly winged, 1.5-2 

 mm. long. Edges of lime-sinks or on moist rocks in 

 dense shade. Figure 1, natural size. 



This filmy-fern is almost always terrestrial. It occa- 

 sionally occurs on the bases of tree-trunks about lime- 

 sinks where this fern is in abundance. It occurs either 

 in small patches or as dense carpets, sometimes entirely 

 lining the perpendicular sides of the sinks. In Royal 

 Palm Hammock it grows sparingly only in the upper 

 part of the island. It was first found in Florida in 1901 

 in Snapper Creek Hammock. Since then it has been 

 found in several of the pineland hammocks. The species 

 is common in tropical America. 



FAMILY 2. OSMUNDACEAE 



CINNAMON-FERN FAMILY 



Tall leafy terrestrial plants, with creeping or sub- 

 erect rootstocks. Leaves erect or spreading: petioles 

 winged at the base : blades 1- or 2-pinnate. Veins 

 free, mostly forked, extending to the margins of the 

 leaflets. Sporangia naked, large, globose, mostly 

 stalked, borne on modified contracted leaflets, or in 

 clusters (sori) on the lower surface of the leaflets, 

 opening in 2 valves by a longitudinal slit : ring few- 

 celled or wanting. Prothallia green. There are three 

 genera in this family : the following, and two others 

 in the Old World. 



