wy 
MR. RICHARD SPRUCE’S HEPATICH ELLIOTTIANS. 361 
Genus 18. Syzyaretta, Spruce, in Trans. Bot. Soc. Edinb. 
xv. p. 499. 
Of Syzygiella there is only a single species, a nearly smooth- 
leaved form of the Jungermannia perfoliata of Swartz. I had 
-previously known this species as very rough-leaved, but seeing 
the leaves scarcely at all tubercular and slightly different in 
outline, I at first took it for a distinct species. Like every other 
Syzygiella it has extraordinarily large trigones at the angles of 
the leaf-cells, in which it agrees with Leioseyphus—another genus 
with similar opposite leaves, but differing in the constant presence 
of large stipules, and in the smooth (not numerously-plicate) 
perianth, flattened at least towards the truncate apex. 
[Mr. Spruce’s MS. contains an abbreviated note on synonymy 
of Syzygiella, which I interpret as follows :—Plagiochila anomala, 
Lindenb. et Gottsch. in Syn. Hep. (1847) p. 646, was figured by 
Gottsche in 1863 in his‘ Mexikan. Leverm.’ t. 7. On p.63 of the 
latter work Gottsche says that the leaves appear “ interdum 
bidentata.” Mr. Spruce considers the plant to be identical with his 
own Syzygiella plagiochiloides var. subintegra described in Trans. 
Bot. Soc. Edinb. xv. p. 501, with the leaves “ raro oblique 
bidentellis”’ ; and he would institute the name Syzygiella anomala, 
Spruce. Further the var. densifolia of S. plagiochiloides (loc. cit. 
p- 501) is identical with Chiloscyphus mancus, Mont., ‘Sylloge’ 
(1856), p. 63, and (?) with Plagiochila subintegerrima, Nees, in 
Lindenberg’s ‘Species Hepaticarum’ (1839), p. 129, t. 28. 
Mr. Spruce’s note goes on to say “ fig. 6 ej. tab. aliena, Plag. vera 
(Nees, Hep. Jav. 79) Mont. f. per paria approx. Java (Blume), 
Bolivia (D’Orb.).” By this I understand that Lindenberg’s 
tab. 28. fig. 6 represents a portion of an entirely different 
species, a true Plagiochila, which seems likely enough, for the 
leaves are not subentire but spinoso-dentate, and the perianth 
is clavato-obovate, and not ovate, turgid, constricted at the apex 
as in a Syzygiella. Indeed I would venture to suggest that 
fig. 6 belongs to Plagiochila bahiensis, Lindenb., which is figured 
immediately above it on the same plate. It is true that the 
perianth of that species is omitted in the description (p. 136) as 
unknown. Perhaps that is another mistake. On the other hand, 
Montagne describes the Bolivian plant in D’Orbigny’s ‘ Voyage 
dans |’Amérique méridionale’ (1835), p. 80, as “ foliis per paria 
approximatis..... subintegerrimis, perianthiis ovatis compres- 
sis, ore truncato ciliato””—a description which fits Mr. Spruce’s 
