66 MUSCI-ACROCARPI-PERJSTOMr. [Bartramia. 



— Named in honour of J. C. Timm, a German, and author of 

 a Flora Megapolitana. 



1. T. megapolitana, Hedw. (3Iechlenburg Timmia.) — a. cap- 

 sule inclined. T. megapolitana, Hedw. St. Cr. v. 1. 1. 31. Schwaegr. 

 Suppl. v. 1. P. II. p. 84. Muse. Brit. ed. 2. p. 191. Suppl. 

 t. 6. — T. cucidlata, (the veil persistent on the seta). Mich. Am. 

 v. 2. p. 304. — (3. capsule cernuous. T. austriaca, Hedw. Sp. 

 Muse. p. 176. t. 42. /. 1—7. Schwaegr. Supjilv. 1. P. i/.jD. 84. 



Rocks on the banks of the Islay, above Airly castle, Angus-shire ; dis- 

 covered by Mr. Drummond in 1824 : always barren. This grows in 



dense tufts, 3 — 4 inches high, erect, slightly branched, brown below, 

 green above. Leaves linear-lanceolate, erecto-patent, plane or some- 

 what recurved at the margin, serrated, slightly carinate, with a strong 

 nerve reaching to the point, crisped when dry. Capsule oblongo-obovate. 

 Lid hemispherical, slightly mammillate. — The American state of the 

 plant is remarkable for having the seta passing through the fissure of the 

 calyptra, which then remains attached to it. 



29. Bartramia. Hedw. Apple-Moss. 



Seta terminal. Capsule subglobose. Peristome double : the 

 outer of 16 teeth; the inner of a membrane divided into 16 

 bifid segments. Calyptra, dimidiate. (Muse. Brit. t. 3.) — Named 

 in compliment to John Bartram, an American Botanist and 

 traveller. 



* Seta elongated, straight. 



1. B. pomiformis, Hedw. (common- Apple-Moss) ; leaves patent 

 subulate strongly serrated twisted when dry, the nerve reach- 

 ing to the summit. Muse. Brit. ed. 2. p. 144. t. 23. — x. minor ; 

 stems short, leaves flexuose. B. pomiformis, Hedw. Sp. Muse, 

 p. 164. Fl. Brit. p. 1340. E. Bot.t. 998. Turn. Muse. Hib. p. 



108. Schwaegr. Suppl. v. 1. P. Up. 145. t. 58. Hobs. Br. Mosses, 

 v. 1. n. 60. Drum. Muse. Scot. v. 1. n. 65. — B. crispa, Sw. 

 — Bryum pomiforme, Linn. — Dill. Muse. t. 44. /. 1. |3. major ; 

 stems much elongated branched, leaves longer crisped especially 

 when dry. Hook, in Fl. Lond. cum Ic. — B. crispa, Brid. Muse, 

 v. 2. P. III. t.l.f. 4. E. Bot. t. 1526. Schwaegr. Suppl. v. 1. 

 P. II. p. 146. t. 59. 



Heaths and dry banks. /3. Principally in subalpine countries. — Fr. 

 Apr. May. 



2. B. ithyphylla, Brid. {straight-leaved Apple-Moss); stems 

 short, leaves rigid erecto-patent subulato-setaceous almost en- 

 tire, the nerve half-way up passing into the substance of the 

 leaf, straight when dry, seta much elongated. Brid. Muse. v. 

 2. p. 1. t. 6. E. Bot. t. 1710. Schwaegr. Suppl. v. I. P. II. p. 

 51. *. 60? Hobs. Br. Mosses, v. 2. n. 53. Drum. Muse. Scot. 

 v. 1. n. 66. Muse. Brit. ed. 2. p. 145. t. 23. 



Dry banks, in mountainous situations. Fr. Spring. — Stems tufted, as 

 in all of this genus. Distinguished from the preceding by its straight 



