- lanceolate, tapering to a slightly serrulate point, otherwise
entire, nerveless, or sometimes shortly and faintly two-nerved; caps oblong or oval immersed, lid with a short oblique beak: monoicous.
Trunks of trees, rare. Spring.
86. HOOKERIA. Smith.
552. H. lucens. Dill. St. 1.3in. procumbent, with irregular complanate branches; l. complanate, large roundish ovate, obtuse, entire, nerveless; areolæ large, hexagonal, pellucid; caps. roundish elliptical, almost pendulous; lid conical, suddenly tapering into a long straight beak: monoicous.
Moist banks, stones in streams, &c. XI. XII.
553. H. lætevirens. H. & T. St. shorter and more slender, procumbent, sub-pinnate; l. complanate, loosely imbricate, smaller, ovate, suddenly and shortly acuminate, with a thickened border; doubly nerved above half-way, serrulate at apex; areolæ smaller, hexagonal; caps. smaller, drooping, roundish, elliptical; lid as above: monoicous.
Caves, wet rocks, and by rivulets. XI. XII.
87. DALTONIA. Hooker & Taylor.
554. D. splachnoides. H. & T. St. ¼in. tufted, erect, br. fastigiate; l. crowded, sub-erect, linear-lanceolate, acuminate, slightly keeled, entire, nerve vanishing below apex; per. l. small ovate; caps. small oval oblong, sub-*erect, lid large, with a long straight beak.
Sub-alpine moist shady rocks and trees, rare. X. XI.
88. CRYPHÆA. Mohr.
555. C. heteromalla. Dill. St. 1in. decumbent, sparingly branched, sub-pinnate; l. spreading, mbricate,
