12 
In each case the plant grew in shallow, quiet water with a muddy 
bottom. I believe this plant will be found all along the north- 
eastern border of the United States and in Canada, and I would 
suggest that collectors be on the lookout for it. 
It is strange that none of the works on North American 
Botany mention the two bractlets at the base of the flowers in ell 
species of Myriophyllum. So far as I know, Engler and Prantl in 
Natiirlichen Pflanzen Familien and Martius in Flora Brasiliensis 
are the only ones mentioning these bractlets. I first found them 
in Myriophyllum Farwellii, where they are small, lanceolate and 
hyaline, as also in JZ. tenellum Big., WM. hippuroides Nutt., M. pin- 
natum (Walt.), M@. Mexicanum Watson, M. laxum Shutt. They 
are ovate and very large and conspicuous in J. spicatum, being 
two-thirds the size of the bracts and as firm in texture. In JZ. 
alterniflorum D.C. they are smaller than in M. spicatum, but simi- 
lar in texture and shape. In M. verticillatum L. they are quite 
conspicuous, ovate and hyaline. In MM. heterophyllum Michx., 
ovate, serrate and hyaline. In JZ. humile (Raf.), minute, oblong- 
ovate and membranous. A. J. Grout. 
Co.tuMBiaA CoLLecr, New York. 
A Note on Jungermannia Marchica Nees. 
By ALEXANDER W. EVANS. 
(PLATES 254, 255.) 
The hepatic before us is a most clearly marked species of 
Dumortier’s subgenus Lophozia ; but, probably on account of its 
extreme rarity, it remained for a long time strangely overlooked 
or misunderstood by both European and American botanists. 
During the forty years which followed Nees von Esenbeck’s publi- 
cation of the plant, Jungermannia Marchica, as a distinct species, 
quite disappeared from German literature. In the Synopsis 
Hepaticarum the only allusion to it is a brief description under — 
Nees’ first name, /. socia, var. obtusa ; and even the type specimen, 
as Herr Stephani has recently. determined, is labeled in the same _ 
way. Apparently nothing further was seen of the species in Ger- _ 
