BARTRAMIA. 87 



be the same as our plant ; and we are unable to distinguish 

 any essential mark of difference in the American B. gran- 

 diflora of Schwaegrichen. 



B. fontana ; stems fastigiate ; leaves closely imbricated, rigid, 

 erect, broadly ovate or lanceolate, acuminated, nearly plane, 

 serrated; fruitstalks lateral from innovations. (TAB. XXIII.) 



a., major ; stems from 3 to 6 inches in length; leaves broadly ovate, 

 acuminate. 



B. fontana. Swartz in Sclirad. Journ. Turn. Muse. Hib. p. 107- 

 Moug. et Nestl. n. 36. Mnium fontanum. Linn. Hedw. Sp. Muse. 

 Bryum fontanum. Engl Bot. t. 390. Dill. Muse. t.44.f.2. 



ft- marchica ; stems from half an inch to an inch in length ; leaves 

 lanceolate, acuminated. B. marchica. Swartz in Schrad. Journ. 

 Engl. Bot. t. 2074. Mnium marchicum. Hedw. St. Cr. v. 2. t. 39, 

 B. fontana B>. pumila. Turn. Muse. Hib. p. 107. t. 10. f. 1. 



HAB. Wet places in a turfy soil. 



Not only do the stems of this species vary much in size, 

 but the leaves also in size and direction ; and we have seen 

 specimens, which we have gathered in Switzerland, with 

 leaves as decidedly curved to one side as in B.falcata of 

 Hooker in Linn. Trans.., whence we are disposed to think 

 that that may be only a variety of ours. B. marchica we 

 have traced, from its usually small size, up to the true and 

 common B. fontanum; and indeed the var. /3. of Mr. Tur- 

 ner is so intermediate between the two kinds now mentioned, 

 that we hesitated for some time to which to refer it. We 

 could wish that B. sphcerocarpa of Hedw.. the B. scalrida, 

 B. Muhle?ibergii, and even B. radicalisof Schwaegrichen 's 

 Supplement possessed more decidedly marked characters to 

 distinguish them from our var. marchica. 



* * Fruitstalks very short, curved. 



B. Halleriana; stems much elongated, proliferous; leaves 

 long, subulate, flexuose, serrated above ; fruitstalks lateral 

 from innovations, very short, curved. (TAB. XXIII.) 



B. Halleriana. Hedw. St. Cr. v. 2. t. 40. Turn. Muse. Hib. p. 109. 

 Engl. Bot. t. 997. 3/0115-. et Nestl. n. 35. Bryum laterale. Dicks. 

 HAB. Moist mountain rocks. 



The foliage of this has great affinity with that of B. po- 

 miformis |3., and the stems vary from two to five and six 

 inches. These however are exceedingly proliferous, throw- 

 ing off their shoots from the summits, whence the fruit of 

 the two or three preceding years, still remaining on the 

 stems, has the appearance of being lateral. The fruitstalks 

 are very short and curved. Capsules globose^ much fur- 



