uepaticjs. (liverworts.) 693 



24. JUNGEEMAHIA, L. Scale-Moss. (Tab. 22.) 



Fructification terminal on the main stem, or on a short branch. Involucral 

 leaves free, like or ur.like the stem-leaves. Perianth tubular, moie or less an- 

 gled; the mouth laciniate. Calyptra included, rarely projecting. Capsule 

 globose or oval. Elaters with two spiral fibres. Antheridia in the base of in- 

 flated perigonial leaves. Stem-leaves entire, or 2 - many-lobed. (Dedicated to 

 Jungermann, a German botanist of the 1 7th century.) 



# Leaves and amphigastria alike, 2 - 4-parted. 



1. J. trachopliyila, L. Stems flaccid, "branched ; leaves and amphi- 

 gastria 3-4-parted; the divisions straight, spreading, bristle-form, each com- 

 posed of a single row of tubular cells ; fruit-bearing branch lengthened ; perianth 

 nearly cylindrical, coatracted and toothed at the mouth. — Decayed wood, &c. 

 — A minute, pale-cobred species. (Eu.) 



2. Jf. setacea, Weber. Leaves and amphigastria 2-3-clcft; the divis- 

 ions incurved, each composed of two rows of cells ; fruit-bearing branch short ; 

 mouth of perianth ciliate. — On the ground, &c. — Smaller than No. 1 , brownish- 

 colored. (Eu.) 



# * Leaves 2-cleft or (from No. 7-11) 2 - %-chft : amphigastria none, except in 



No. 7 and 8. 



3. J. COimivens, Dickson. Stems creeping, fiexuous; leaves nearly 

 orbicular, with a broad decurrent base, distant, a little wider than the stem, 2- 

 cleft to £ or J of their length, the sinus obtuse; segments acute, connivent; 

 areolation large ; involucral leaves 3 - 5-cleft ; perianth slender, the mouth 

 lacerate-ciliate. — On rotten wood. (Tab. 21.) (Eu.) 



4. J. Clirvifdlia. Dickson. Fruit-bearing branch short; stems creep- 

 ing; leaves imbricated, ascending, nearly orbicular, inflated at the ventral base, 

 innately 2-cleft ; the segments long-linear, indexed ; involucral leaves erect, 

 2-3-cleft, serrate; perianth narrow, plaited-triangular, the mouth denticulate. — 

 Rotten logs, &c. (Eu.) 



5. J. bicuspid a ta, L. Fruit-bearing branch short; stems loose, pro- 

 cumbent ; leaves distant or crowded, half vertical, ovate, a little wider than the 

 stem, 2-cleft to the middle, the sinus obtuse ; segments acute ; involucral leaves 

 spreading at the apex, 2 -5-cleft, repand-scrrulate ; perianth elongated, the 

 mouth denticulate. — A small and common species. (Eu.) 



6. J. divaricata, Engl. Bot. Fruit-bearing branch elongated; stems 

 prostrate, rigid, thick ; leaves distant, spreading, rather fleshy, equalling the 

 stem in diameter, oblong, the sinus and segments acute; involucral leaves nu- 

 merous, imbricated, 2-3-cleft, serrulate; perianth oval, plaited above; the- 

 mouth membranaceous, denticulate. (J. byssacea of authors.) — Among Mosses 

 and on decayed woods. — A minute, dark green species. (Eu.) 



7. 3. setiformis, Ehrhart. Stems erect or ascending, and, with the 

 leaves, terete-sulcate ; leaves toothed at the base, 3 - 4-cleft ; the lobes chan- 

 nelled, ovate-oblong, acute ; amphigastria ciliate-toothed at the base, deeply 

 2-cleft, with lanceolate segments ; perianth oval, plaited. — Alpine regions of 

 the White Mountains, Oakes. (Eu,) 



