—50— 



2. RicciELLA HuEBENERiANA (Lindenb.) Dumort. Hep. Europ. 171. 1874. 

 Riccia Huebeneriana Lindenb. Nova Acta Acad. Caes. Leop. Carol. 18: 504 d. 

 pi- 37, f' 3- 1836. Riccia Klinggraeffii Gottsche, Bot. Zeit. 17; 89. 1859. 

 Riccia fluitans ^ purpurascens Klinggr. Leber- und Laubm. West- und Ost- 

 preussens 40. 1893. 



Collected in November, 1912, at Highlands, Monmouth County, New 

 Jersey, on the clay bottom of a drained pond, by Miss Haynes, Miss Lorenz, and 

 the writer. Specimens from this locality have recently been distributed by 

 Miss Haynes in her American Hepaticae, No. 116. R. Huebeneriana was first 

 recorded as a North American species by Underwood, in 1894,^ who cited it 

 from Massachusetts, New Jersey, and Ohio. The next year, however, he made 

 it clear that he understood the species in a somewhat broader sense than is now 

 done, including under it R. Sullivantii (Aust.) Evans as a synonym.^ Since 

 most if not all of the specimens which he quoted would now be referred to R. 

 Sullivantii, nothing definite is known about the distribution of R. Huebeneriana 

 in North America. The station noted above is therefore worthy of record. 

 The species grows in localities which are favorable for Riccia arvensis and Ric- 

 ciella Sullivantii. It is characterized by its small size, by its reddish or purplish 

 pigmentation, and by its incomplete rosettes, the thallus forking two or three 

 times with spreading branches. The species is fully described by Miiller in 

 Rabenhorst's Kryptogamen-Flora 6: 206. 1907. 



3. Riccardia palmata (Hedw.) Carruth. Aneura palmata Dumort. 

 Collected in January, 1913, at Sanford, Florida, on a cypress log in a swamp, 



by S. Rapp. The earlier writers on North American Hepaticae ascribed a wide 

 distribution to the present species. In 1874, however, Lindbergh pointed out 

 the fact that two distinct species were included under Aneura palmata, as ordin- 

 arily understood. He reserved the specific name palmata for one of these species 

 and described the other as Aneura latifrons, sp. nov., afterwards changing the 

 name to Riccardia latifrons} To this species he referred the specimens distributed 

 by Sullivant in his Muse. Alleg., No. 279, under the name Aneura palmata. 

 Several years later Underwood stated, or at least implied, that all the North 

 American material of A. palmata really belonged to A. latifrons and that the 

 true A. palmata was not known from this side of the Atlantic.^ But the next 

 year he listed A. palmata from British Columbia,^ and since that time an exten- 

 sive distribution of the species in North America has gradually been re-estab- 

 lished. At the present date it is known with more or less certainty from Alaska, 

 British Columbia, Washington, Oregon, and California, and also from Nova 

 Scotia, Ontario, Maine, New Hampshire, Vermont, Connecticut, New York, 

 West Virginia, and Wisconsin. Its detection in Florida indicates of course a 



1 Bot. Gaz. 19: 277- 1894- 



2Syst. Bot. North Amer. 9^: 4. 189S. 



3 Not. pro F. et Fl. Fenn. 13: 372-376. 1874. 



4 Acta. Soc. Sci. Fenn. 10: 513. 187S. 



5 Bot. Gaz. 14: 197. 1889. Gray's Manual, Ed. VI. 725. 1890. 

 ^Zoe 1 : 365. 1891. 



