excurrent into a mucro; areolæ upper minute, rectangular and hyaline at base; caps. erect cylindrical incurved, lid with an oblique beak: dioicous.
Stones in streams. Anglesea, Bristol, Surrey, Sussex, in
fr. (Davies.) IV.
159. T. unguiculata. Hedw. St. 1/8-1in. cæspitose, dichotomous; l. oblong-lanceolate, obtuse, margin recurved, nerve excurrent into a short mucro; caps. oblong cylindrical erect on a long reddish seta; lid with a subulate beak: dioicous.
Clay banks and hedges. XII.
var. β. cuspidata. stems shorter, l. narrower, with a
longer mucro.
γ. apiculata. l. spreading recurved, mucro long.
δ. microcarpa. caps. small oval or oval-oblong.
ε. obtusifolia. more robust, l. shorter, broader obtuse, mucro almost or altogether absent; caps. sub-cylindrical.
ζ. fastigiata. with long fastigiate innovations; l. larger, slightly undulate.
160. T. convoluta. Hedw. Cæspitose; l. spreading
oblong-lanceolate, plane or somewhat undulate in margin,
nerve not excurrent; per. l. strongly convolute, sheathing;
caps. inclined oblong-ovate, on a yellowish seta; lid with a
long oblique beak: dioicous.
Walls, &c. V. VI.
161. T. revoluta. Schwaeg. Densely cæspitose, l. crowded erecto-patent oblong lanceolate, nerve excurrent from the
