Part 221 (1/2)
22. HARPaNTHUS, Nees. (Pl. 23.)
Leaves succubous, semi-vertical, ovate, emarginate; underleaves connate with the leaves, ovate or lanceolate, 1-toothed at base. Dicious. Fruit on short shoots from the axils of the underleaves, finally sublateral.
Involucral leaves 2 or 4. Perianth terete, the lower half thickened.
Calyptra fleshy, confluent with the perianth for {2/3} its length.
Capsule oval. Antheridia 1 or 2 in the axils of bracts terminal on slender branches. (Name from ??p? _a sickle_, and ?????, _flower_.)
1. H. scutatus, Spruce. Stems filiform, dec.u.mbent, usually simple; leaves smaller at the base and apex of the stems, roundish-ovate, concave, sharply bidentate, the apex lunate or acute; underleaves large, ac.u.minate, involucral leaves two, 2--3-cleft, the upper adnate to the perianth; perianth ovate, becoming obovate, obscurely 3--4-plicate, splitting above on one side; capsule deep brown. (Jungermannia scutata, _Weber._)--On rotten logs in damp places; common. (Eu.)
H. FLOTOVIa.n.u.s, Nees. (Pl. 23.) Stems flexuous, proc.u.mbent, mostly unbranched; leaves ovate-orbicular, horizontal, the apex contracted and emarginate with a shallow sinus; underleaves large, ovate or lanceolate, obliquely inserted, entire or more often toothed on one or both sides near the middle; dicious; perianth subcylindric, slightly sickle-shaped, the mouth pointed at first, notched on one side and finally crenulate; antheridia elliptic, single in the base of swollen leaves. (Pleuranthe olivacea, _Tayl._)--”North America” (_Drummond_), but not collected recently; certainly extralimital.
23. LIOCHLae'NA, Nees. (Pl. 25.)
Leaves succubous, ovate-oblong, entire or slightly retuse; underleaves none. Dicious or moncious. Involucral leaves 2 or 4, like the cauline; perianth pyriform, becoming cylindric, incurved, abruptly rounded at the summit, the minute orifice prominently ciliolate. Capsule oblong, long-exserted. Elaters attached to the middle of the valves. Spores minute, globose. Antheridia in the axils of ordinary leaves. Archegonia 5--12. (Name from ?????, _smooth_, and ??a??a, _a cloak_, referring to the perianth.)
1. L. lanceolata, Nees. Closely creeping, branched; leaves sometimes decurrent; involucral leaves vertical; perianth at right angles with the stem; moncious.--On banks and rotten logs; not rare. (Eu.)
24. JUNGERMaNNIA, Micheli. (Pl. 25.)
Leaves succubous, rarely subtransverse, entire, lobed or dentate, the margins never recurved; underleaves present or none. Dicious or moncious. Fruit terminal. Involucral leaves 4 or fewer, like the cauline or more incised, free; perianth laterally compressed or terete, usually 3--10-carinate, the usually small mouth entire or toothed.
Calyptra oval-pyriform. Capsule globose or oblong, rarely cylindric.
Spores minute, smooth or roughish. Archegonia 8--70. (Named for _L.
Jungermann_, a German botanist of the 17th century.)
-- 1. JUNGERMANNIA proper. _Leaves...o...b..cular or ovate, entire or barely retuse; underleaves none (very small in n. 1)._
1. J. Schraderi, Martius. (Pl. 25.) Creeping, flexuous; leaves round-elliptic, entire, ascending; underleaves broadly subulate, not apparent on old stems; involucral leaves large, elongated, the inner smaller and more or less laciniate; perianth oval-obovate, ascending.--On the ground and rotten logs; common. (Eu.)
2. J. sphaerocarpa, Hook. Stems creeping, the tips ascending, subsimple, greenish; leaves semi-vertical, rather rigid, orbicular, obliquely spreading, decurrent dorsally, pale green; involucral leaves separate; perianth exserted, obovate-oblong, the mouth 4-cleft; capsule globose.--Mountains of N. Eng. (_Austin_); rare. (Eu.)
3. J. pumila, With. Stems creeping, the tips somewhat ascending, subsimple, rooting, pale; leaves ascending, ovate, obtuse, concave, entire; involucral leaves like the cauline, erect; perianth terminal, fusiform, plicate above and denticulate; capsule oval.--On shaded rocks along rivulets, Closter, N. J. (_Austin_). (Eu.)
-- 2. LOPHZIA. _Leaves roundish or subquadrate, bidentate, bifid, or sometimes 3--5-cleft; underleaves none, or small and mostly 2-parted; perianth usually strongly plicate._
[*] _Underleaves present._
[+] _Leaves bifid or 2-lobed._
4. J. Gillmani, Aust. Stems short, densely cespitose, prostrate, strongly radiculose; leaves vertical, round-ovate, subconcave, bifid, the lower leaves with usually acute sinus and lobes, the upper much larger with rounded lobes and obtuse sinus; underleaves entire or the broader bifid; perianth without involucral leaves, dorsal, sessile, obovate, subgibbous, ciliate, at length much incised.--In a sandstone cave, Traine Island, L. Superior (_Gillman_).
5. J. Wattiana, Aust. Stems rather thick, 2--4” long, fragile, subflexuose, strongly radiculose; leaves subvertical or spreading, subovate, concave, emarginately 2-lobed, the lobes acute or the upper obtuse; underleaves somewhat obsolete, hair-like or subulate, incurved; involucral leaves little larger, less deeply lobed; perianth terminal, small, ovate-gourd-shaped, whitish, ciliate.--On the ground, northern sh.o.r.e of L. Superior (_Macoun_).
[+][+] _Leaves 3--5-cleft._
6. J. barbata, Schreb. (Pl. 25.) Proc.u.mbent, sparingly branched; leaves roundish-quadrate, with obtuse, acute, or mucronulate lobes and obtuse undulate sinuses; underleaves broad, entire or 2-toothed, sometimes obsolete; perianth ovate, plicate-angled toward the apex, denticulate.--On rocks in mountain regions; common. (Eu.)
Var. attenuata, Martius. Ascending, with numerous offshoots; stem-leaves semi-vertical, obliquely spreading, roundish, acutely 2--4-toothed, those of the shoots closely imbricate, premorsely 2--4-denticulate; involucral leaves two, 3-toothed; perianth oblong.--In similar localities. (Eu.)
7. J. setiformis, Ehrh. Erect or ascending, dichotomous; leaves toothed at base, 3--4-cleft, the lobes ovate-oblong, acute, channelled; underleaves ciliate-dentate at base, deeply bifid, the divisions lanceolate, ac.u.minate; involucral leaves more toothed than the cauline; perianth terminal, oval, plicate.--Alpine summits of N. H. (_Oakes_).