1914] Evans,— Notes on New England Hepaticae,— XI 67 
marchica (Nees) Steph., more closely in fact than to L. incisa. In 
L. marchica the stems are deeply pigmented, the leaves are usually 
broader than long, and the leaf-cells measure 40-50 u in diameter in 
the middle of the leaf. But the leaves are much more frequently 
trifid or even quadrifid, the cell-walls are thin, and there are no tri- 
gones. The gemmae, too, are very different. They are unicellular 
bodies about 16 u in diameter and are spherical or oval in form with an 
even surface. In L. Mildeana, a close ally of L. marchica, a species 
to which reference has already been made, the stems are usually un- 
pigmented, although the leaves vary in color from pale green to deep 
purple. Here again the leaves are frequently trifid or quadrifid and 
the leaf-cells average about 40 u in diameter in the middle of the leaf, 
but the walls are sometimes more or less thickened and trigones may 
sometimes be discerned. The gemmae in L. Mildeana are similar 
to those of L. marchica, but the gemmiparous shoots are slender and 
upright, with minute scattered leaves, and bear a mass of crowded 
and reduced gemmiparous leaves at the apex. 
4. LoPHOZIA QUINQUEDENTATA (Huds.) Cogn. Bull. Soc. Roy. 
Bot. de Belgique 10: 279. 1872. Jungermannia quinquedentata 
Huds. Fl. Angl. Ed. I. 511. 1762. J. Lyoni Tayl. Trans. Bot. Soc. 
Edinburgh 1: 116. pl. 7. 1844. Lophozia Lyoni Steph. Bull. de 
lHerb. Boissier II. 2: 157. 1902. Barbilophozia quinquedentata 
Loeske, Verh. Bot. Ver. Prov. Brandenburg 49: 37. 1907. In the 
writer's first series of * Notes on New England Hepaticae" ! the name 
Lophozia Lyoni was used for the present species instead of L. quinque- 
dentata, in spite of the fact that Jungermannia quinquedentata Huds. 
was published so much earlier than J. Lyon? Tayl. 'The older name 
was discarded because there seemed to be some doubt as to which 
species Hudson's J. quinquedentata actually represented. Pearson,” 
for example, without going so far as to include J. quinquedentata 
among the synonyms of J. barbata Schmid., quotes a letter from 
Spruce, saying that the two species are probably identical. Schiffner? 
admits that Hudson's description of J. quinquedentata is much too 
brief to lead to a positive determination. He states, however, that 
Hudson gave, as a reference to his species, Dillenius, Historia 
1 RuoponA 4: 210. 1902. 
2 Hep. British Isles 341. 1901. 
3 Lotos 53: [16]. 1905. 
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