CHAPTERS IN THE EARLY HISTORY OF HEPATICOLOGY. 27 
trichomanoides purpureus, alpinis rivulis innascens, and 
Muscus muralis platyphyllos, which he associates with 
Pleurozia purpurea and Porella platyphylla, respectively. 
The second edition (1696) of the work just mentioned is the 
most important yet met with as a starting point for hepatic 
species. In the body of the work, under “Lichen,” are 
described eight distinct species, four of them new ones, 
and in the Appendix, under the name ‘ Muscus,’ Mr. 
Samuel Doody, a London pharmacist, lists three others for 
the first time. Among the Musci, too, in Ray’s portion of 
the book, are at least three sterile plants that may be recog- 
nized as Hepatice (Porella platyphylla, Plagiochila asple- 
noides, and Pleurozia purpurea), thus bringing the total 
number of species of this class up to fourteen. Of the new 
ones, the first! is a Lichen minimus albescens, further 
described, if we may presume to transform Ray’s elegant 
Latin into English, as “creeping by little stems, leaves 
pinnate, capitula black, shining. The capitula are seated 
upon half inch pedicels and are perfectly; spherical; finally, 
they are opened into four petals, as it were, and imitate 
flowers.” It is found on moist banks. “Although this,” he 
continues, “has a certain creeping caulicle clothed with 
leaves pinnately attached, we have subjoined it to the pre- 
ceeding [Pellia] on account of its conformity in capitula.” 
Here then we have the relationship between the foliose and 
thalloid Hepaticew established! Lindberg believes this to be 
Diplophyllum albicans, though Micheli identified’ it with 
the plant which, by general consent, has been considered to 
be Kantia Trichomanis. But Ray’s description of the cap- 
sule should exclude Kantia from the list of possibilities. 
It is not difficult to believe that the Lichen minimus, 
“ with venose leaves, advancing by dividing twice or thrice,” 
may be Riccia glauca. This Ray found in his garden—had 
not at the time of writing observed in what way it bore its 
seed. The Lichen terrestris, “supine, very small, dicho- 
4Op. cit., p. 41. 
5Nova Plantarum Genera, p. 8. 
