Chapter III: Peristome Double

_a._ Caps. plano-convex.

BUXBAUMIA (40). Caps. very large, apophysate, oblique; outer teeth irregular reddish, opaque, inner a pale conical plicate membrane, calyptra small, only covering the conical obtuse lid, fugacious, entire or laterally cleft. 99.

_b._ Caps. cylindrical.

ENCALYPTA (partly) (29). _vide ante p. 2._

_c._ Caps. oblong.

ORTHOTRICHUM (chiefly) (36). _vide ante p. 5._

_d._ Caps. obovate, unequal, mouth oblique.

FUNARIA (57). Caps. obliquely pyriform ventricose, sub-erect or cernuous; outer perist. 16, obliquely lanceolate, teeth trabeculate, longitudinally striate, and connected at apex by a small circular disc, very hygrometric, inner a membrane divided into 16 lanceolate processes opposite to outer; calyptra inflated below. 126.

AMBLYODON (56). Caps. clavate or sub-pyriform, incurved sub-erect; perist. outer, 16 short, erect, obtuse teeth; inner (longer) a membrane divided into 16 carinate processes, without cilia. Calyptra indexed at base; leaves loosely reticulated. 125.

MEESIA (55). Caps, obovate or clavate, curved, gibbous, sub-erect, neck long, tapering into seta; perist. outer 16 short, obtuse teeth, somewhat united to inner, entire or split along medial line; inner same as last; leaves of close firm texture, strongly nerved. 125.

_e._ Capsule striated.

ZYGODON (37). _vide ante p. 7._

AULACOMNION (47). Caps. oval or oblong apophysate, cernuous on a flexuose seta; perist. outer 16 teeth, lanceolate-subulate, barred; inner a thin membrane divided half way into 16 carinate lacunose processes, with cilia two or three together. Branches bearing terminal globular masses (_pseudopodia_) of rudimentary leaves or gemmæ. 105.

BARTRAMIA (61). Caps. globose, rather large, erect or cernuous, rarely pendulous, not apophysate; perist. double, single, or wanting; outer 16 equidistant lanceolate teeth; inner a membrane divided into 16 carinate lanceolate processes, splitting along the middle, alternating, sometimes with cilia; calyptra small dimidiate; leaves papillose or muriculate. 128.

_f._ Caps. smooth, mostly pyriform.

PALUDELLA (54). Caps. oval-oblong, slightly curved, cernuous or sub-erect, lid mammillate; peristome as in _Bryum_, inner without cilia; leaves squarrose. 125.

TIMMIA (46). Caps. obovate, cernuous; perist. outer 16 teeth, inner, a membrane divided half way into 64 filiform processes; variously united at the summits; leaves sheathing, rigid, lanceolate; barren fl. axillary, gemmiform. Infl. monoicous. 104.

ORTHODONTIUM (48). Caps. clavoto-pyriform, inclined; perist. outer 16 teeth indexed when dry; inner deeply divided into 16 narrow carinate processes; leaves very tender, narrow, not sheathing; barren fl. axillary, gemmiform, aggregate. Infl. monoicous. 106.

LEPTOBRYUM (49). Caps. and perist. as in _Bryum_; stems of annual growth without innovations; leaves almost setaceous. Infl. synoicous. 106.

BRYUM (50). Caps. pyriform cernuous or inclined; perist. outer 16 teeth, inner a membrane divided half way into 16 carinate segments with or without cilia; stems perennial, with innovations below the terminal flower; barren fl. gemmiform or naked. 106.

MNIUM (51). Caps. oblong pendulous; perist. as in _Bryum_; stems with innovations from the lower part; leaves large; barren fl. discoid; infl. dioicous or synoicous. 121.

CINCLIDIUM (52). Caps., leaves and stem as in _Mnium_, outer teeth 16 short, inner cupuliform. 124.

SECT. I. _b._ CLADOCARPI.

Fruit terminal on very short lateral branches.

DIV. I. _Peristome none._

SPHAGNUM (2). _vide ante p. 1._

DIV. II. _Peristome single._

MIELICHHOFERIA (53). _vide ante p. 8._

FISSIDENS (71) partly. _vide ante p. 10._

CINCLIDOTUS (28) occasionally. _vide ante p. 12._

SECT. II. PLEUROCARPI.

Fructification truly lateral.