358 CATALOGUE OF CRYPTOGAMIC PLANTS. 
135. Plagiochila revolvens, Mitten, MSS. ; repens, ramis erectis pro- 
lifero-ramosis apicibus circinato-incurvis, foliis imbricatis appressis 
orbiculatis margine dorsali reflexis basi longe decurrentibus in- 
tegerrimis, perianthio brevi obconico compresso ore integerrimo. 
Allied to P. ansata, and in the form of its leaves to Alicularia oc- 
clusa, but different from both in their reflexed dorsal margin and long 
decurrent bases. 
136. Jungermannia nigrescens, Mitten, MSS. ; adscendens subramosus, ` 
foliis ovato-oblongis remotis subsecundis concavis apice brevi 
emarginatis angulis acutis vel obtusiusculis, basi dorsali longe 
decurrentibus et versus basin lacinia parva dentiformi instructis. 
In the curious remote tooth at the base of the decurrent dorsal 
margin, this species resembles J. leucostoma, but the present is a much 
larger plant, the leaves are more concave, the sinus is more shallow, 
and the laciniæ more obtuse. 
. 187. Gymnanthe Bustillosii, Mont. 
138. Leptoscyrnus, Mitten, nov. gen.— Perianthium. terminale, com- 
pressum, ore truncato. Zuvolucri folia caulinis similia. Caulis 
horizontalis vel adscendens. Folia horizontalia. Amphigastria 
bifida. 
L. Liebmannianus (Ldbg. et Gottsche), Mitten. Jungermannia 
Liebmanniana, Ldbg. et Gottsche. Chiloseyphus fragilifolius, Tayl. 
Lond. Journ. Bot. 1848. p. 284. - 
This is one of a small group of Hepatice on which I propose to found 
the genus Lepíoscyphus, and I have little doubt that the above refer- 
ence of Chiloscyphus fragilifolius to the Jungermannia Liebmanniana of 
Lindenberg and Gottsche is correct, for I possess the same species from 
Mexico as well as from Cotopaxi. Other species of this genus are 
L. succulentus, (L. et L.), Mitten ; L. Taylori (Hook.), Mitten; L. pal- 
~ lens, Mitten, MSS. ; L. equatus (Tayl.), Mitten ; L. turgescens (Hook. fil. 
et Tayl.), Mitten; L. sérongylophyllus (Tayl.), Mitten ; D. Chamissonis 
(Ldbg. et Gottsche), Mitten ; L. nigricans, Mitten, MSS.; L. gibbosus 
(Tayl), Mitten ; Z. juliformis, Mitten, MSS. ; L. decipiens, panto L. 
reclinans (Tayl.), Mitten; and probably Z. di int (Hook.), Mitten. 
_ The species are remarkable for their conspicuous intercalary spaces. 
.. 189. L. Chamissonis (Ldbg. et Gottsche), Mitti. cu 
140. Trichocolea fomentella, Nees. B. tomentosa. 
: M. m var. e. subsimplez ? Synops. Hepat. p. 237. 
