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704 336. Jungermannia. 13. HEPATICiE. PLcell.Jol: Lichenastrura alpinum, bryijulacei argentei facie, Dillen Muse. 73,38. Jungermannia julacea, Lin. S. P. 1601 ; Engl. Bot. 1023 ; Hooker Jung. 2. Jungermannia concinnata, TVahlenh. Lapp. 3S4. On wet places, on alpine heights. /3. gracilis. Stem long; leaves small, distant. 39. Jungermannia laxifolia. Lonsc-leaved jungermanii. Stem upright, scarcely branched, threadlike; leaves dis- tant, 4-rowed, upright, spreading, ovate, slightly keeled, acutely 2-cut \ fruit terminal ; calyx oblong, slightly plaited mouth contracted, toothed. Jungermannia laxifolia, Hooker Jung, 59. In mountain rivulets ; April to June. Perichetial leaves similar to the stem leaves, distant, often leaving the calyx quite exposed. XXIII. 337, BAZZANIUS. Bazzanio. Monoicous. Male. Anther spherical, pedicelled, in the axillae of the perichetial leaves. Fem. Calyx from the under side of the stem, pedicelled, oblong, tubular, narrow at top ; mouth slit down on one side, toothless ; peduncle long; capside ovate, 4

Pl.ceU.fol. l;j. HEPATIC^. 338. Scalius. 705 larly; peduncle long; capsule ovate, 4-valved; valves regularly streaked lengthways and across; seeds spherical, clustered, in threes ; elaters affixed to the tops of the valves helices single, slenderer at each end. Root fleshy, branched; stipules 0. Scalius Hookeri. Hooker's scalius. Stem upright ; leaves distant, tiledlike, ovate, oblong or lobed and cornered. Jungermannia Hookeri, Engl. Bot. ^bob'. Hooker Jung. 54. On the sides of ditches ; October to May, XXV. 339. CESIUS. Cesius. Monoicous. Male. ? Fem. Calyx 0; calyptra terminal, ovate, bursting; peduncle long; capsule globular, ^-valved; valves regularly streaked lengthways and across; seeds spherical ; elaters affixed to the valves ; helices double, rather slender at each end. Leaves 2-rowed ; stipules ; perichetial leaves embracing each other, and serving as a calyx. Cesius concinnatus. Braided cesius. Stem upright, branched, top enlarged and compressed leaves 2-rowed, closely tiledlike, compact, upright, hollow, ovate, nicked ; Jruit terminal. JuDgermannia concinnata, Light/. Scot. 2,7S6; Hooker Jung. 3. Jungermanuia julacea, Fl. Dan, 1002. On barren spongy places on mountains. XXVI. 340. HERBERTUS. Herbert. Monoicous. Male. Anthers spherical, pedicelled, in clusters, in the axillae of the perichetial leaves. Fem. Calyx ; calyptra terminal, ovate ; peduncle long ; capsule ovate, 4

704 336. Jungermannia. 13. HEPATICiE. PLcell.Jol:<br />

Lichenastrura alpinum, bryijulacei argentei facie, Dillen Muse. 73,38.<br />

Jungermannia julacea, Lin. S. P. 1601 ; Engl. Bot. 1023 ; Hooker<br />

Jung. 2.<br />

Jungermannia concinnata, TVahlenh. Lapp. 3S4.<br />

On wet places, on alpine heights.<br />

/3. gracilis. Stem long; leaves small, distant.<br />

39. Jungermannia laxifolia. Lonsc-leaved jungermanii.<br />

Stem upright, scarcely branched, threadlike; leaves dis-<br />

tant, 4-rowed, upright, spreading, ovate, slightly keeled,<br />

acutely 2-cut \ fruit terminal ; calyx oblong, slightly plaited<br />

mouth contracted, toothed.<br />

Jungermannia laxifolia, Hooker Jung, 59.<br />

In mountain rivulets ; April to June.<br />

Perichetial leaves similar to the stem leaves, distant,<br />

often leaving the calyx quite exposed.<br />

XXIII. 337, BAZZANIUS. Bazzanio.<br />

Monoicous. Male. Anther spherical, pedicelled, in the<br />

axillae of the perichetial leaves. Fem. Calyx from the<br />

under side of the stem, pedicelled, oblong, tubular, narrow<br />

at top ; mouth slit down on one side, toothless ; peduncle<br />

long; capside ovate, 4

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