[ 1463 ]
JUNGERMANNIA crenulata.
Crenulated Jungermannia.
CR YPTOGAMIA Alga;.
Gen. Char. Male flowers sessile.
Capsule on a stalk rising from a sheath, o f 4 valves,
Seeds attached to elastic filaments.
Spec. Char. Stems simple or divided, spreading. Flowers
terminal. Leaves two-ranked, imbricated, orbicular,
undivided, with a thick crenulated border, without
auricles.
T h i s elegant and curious Jungermannia was sent us last
March by Mr. W, Borrer junior, from some hogs at Am-
berley, Sussex. We can find no description nor specimens
with which it agrees, and therefore venture to describe it as
new.
It comes near to J. emarginata, t. 1022, in many respects,
and should be arranged in the same section, having simple
imbricated leaves, and terminal fruit-stalks. It differs however
in its round undivided leaves, whose margin is very remarkable,
being thick and finely crenate, or as it were beaded.
The stems grow in tufts, spreading, and are mostly simple,
throwing out roots from their under side. Sheath terminal,
solitary, with 5 plaits and as many blunt teeth. Fruit-stalk
about half an inch long, whitish. Capsule of 4 blackish acute
valves. The leaves and sheath have a rich purple hue mixed
with pale green, and the former are finely dotted.