THE BRYOLOGIST 



Vol. XV March 1912 No. 2 



A NEW FRULLANIA FROM FLORIDA 



Alexander W. Evans 



During the past few years Mr. Severin Rapp, of Sanford, Florida, has had 

 the kindness to send the writer a large series of Hepaticae for determination. 

 One of the most interesting of these is a Frullania, which is evidently unde- 

 scribed, and it is a pleasure to associate with this distinct species the name of its 

 discoverer. In the writer's Revision of the North American Species of Frullania, 

 pubHshed in 1897, ^ those occurring in the United States and Canada are the 

 only ones considered. Twenty-two in all are recognized, two being incompletely^ 

 known. Since the publication of this paper one of the species, F. virginica 

 Gottsche, has been declared synonymous with F. ehoracensis Gottsche,^ while 

 another species, F. saxicola Aust., has been withdrawn from among the syno- 

 nyms of F. ehoracensis and reinstated as a distinct plant. ^ The only other 

 addition which has been made to the list is the tropical F. gihhosa Nees, which 

 Stephani has recently reported from Alabama.^ This and the new species 

 described in the present paper increase the total number to twenty-four. In 

 spite of the fact that Frullania is essentially a genus of warm regions, attaining 

 a high degree of development in the tropics of America, only seven species are 

 definitely known from Florida. In addition to the new species these include 

 the following: F. arietina Tayl., F. Donnellii Aust., F. ehoracensis Gottsche, 

 F. Kunzei Lehm. & Lindenb., F. ohcordata Lehm. & Lindenb.,^ and F. sguarrosa 

 (R., Bl., & Nees) Dumort. 



Frullania Rappii sp. nov. 



Dull green, sometimes more or less tinged with brown or red, irregularly 

 scattered or in very loose tufts; stems prostrate and closely appressed to the sub- 

 stratum, copiously and irregularly branched, the vegetative branches sometimes 

 short and limited in growth but often essentially like the stem, usually with small- 

 er leaves near the base: leaves more or less imbricated, sometimes so densely so 

 that the lobules overlap; lobes slightly convex, not squarrose, widely spread- 

 ing, ovate, 0.75 mm. long and 0.6 mm. wide when well developed, rounded but 

 not cordate at the dorsal base and arching across the axis, rounded to very ob- 

 tuse at the apex, entire or vaguely sinuate along the margin, sometimes minutely 

 crenulate at the base; lobules galeate (rarely explanate), distant about 0.06 mm. 

 from the axis and averaging about 0.27 X 0.24 mm., subparallel with the axis 



1 Trans. Connecticut Acad. 10: 1-39. pi. 1-15. 1897. 



2 Rhodora 8 : 44. 1906. 

 3Rhodora 13: 202. 1910. 



4 Species Hepat. 4: 344. 1910. 



5 Includes F. caroliniana Sulliv. See Evans, Bryologist 11: 70. 1908. 



The January Bryologist was issued Jan. 20, 1912. 



