325. (34) B. Billarderii. Schw. St. ½-1in. branched, radiculose; l. crowded in tufts at top of branches and stems, ovate-oblong, serrate and recurved at apex, apiculate, margins recurved below; caps. pyriform, broadest below the middle, tapering at neck, pendulous; lid conical pointed.
Hurst-pier-point, on old ant-hills; barren. Summer.
326. (35) B. cæspiticium. L. St. ¼-1in. tufted, branched; l. ovate-lanceolate, pointed, generally serrulate at apex, margin recurved but not thickened, erect when dry, upper ones largest; caps. oblong-obovate, pendulous, slightly constricted when dry; lid large mammillate.
Walls, rocks, roofs, &c.
327. (36) B. murale. Wils. St. ¼in. tufted, branched; l. ovate-lanceolate, concave, shortly pointed, margins plane; loosely imbricate; caps. oblong-pyriform pendulous, deep purple or almost black when ripe; neck tapering; lid large mammillate.
Mortar of old walls. V. VI.
Marple, Killarney, N. Wales, Oxford, 1863 (H. Boswell).
328. (37) B. sanguineum. Ludwig. St. ¼in.; l. distant, ovate-lanceolate pointed, generally serrulate at apex, margins scarcely recurved; caps. oblong or pyriform pendulous, blood-red when ripe; lid pointed.
Heathy ground and walls., VI. VII.
var. β. radiculosum. caps. obconical, seta geniculate at
base.
329. (38) B. erythrocarpon. Brid. non Schw. (B. atropurpureum. W. & M.) St. ¼-½in. branched; l. erecto-patent,
ovate concave, pointed, margin reflexed, entire, lower
