56 MUSCI-ACROCARPI-PER1STOMI. [Orthotrichum. 



1 1. O. Hutehinsice, Sm. {Miss Hutchins Bristle-Moss); stems 

 erect, leaves lanceolate erect rigid, capsule clavate furrowed, 

 calyptra very hairy. E. Bot. t. 2523. Hobs. Br. Mosses, v. 2. 

 n. 44. Schwaegr. Suppl v. 2. P. II. p. 138. Drum. Muse. 

 Scot. v. 2. n. 33. Muse. Brit. ed. 2. p. 131. t. 21. 



On rocks in alpine situations, in England, Scotland and Ireland: 

 first discovered in the latter country by Miss Hutchins, near Bantry. 

 Fr. May.— This has the capsule of O. crispum, but the foliage more re- 

 sembling that of O. anomalum, of a blackish-brown colour, and as erect 

 when dry as it is when moist. Seta often twisted. Peristome with its 8 

 teeth, when recurved, deeply and regularly cleft down the middle. 



12. O. Ludwigii, Brid. (Ludwigian Bristle- Moss); stems creep- 

 ing, leaves erecto-patent narrowly lanceolate crisped when dry, 

 capsule pyriform smooth furrowed only at the extremity, mouth 

 extremely contracted, calyptra remarkably hairy. Brid. Muse. 

 Suppl. p. 26. Schwaegr. Suppl. v. 1. P. II. p. 24. t. 51. 

 Brum. Muse. Scot. v. 2. n. 52. Grev. Scot. Cr. Fl. t. 133. 

 Muse. Brit. ed. 2. p. 132. Suppl. t. 4. — Splachnum Wulfe- 

 nianum, Schwaegr. Suppl. v. I. p. 46. t. 14. 



Frequent on young oaks, in subalpine glens, in various parts of Scot- 

 land. Fr. Aug. — The capsule may distinguish this, at first sight, from 

 every other Orthotrichum. The inner fringe of the peristome is exceed- 

 ingly fugacious. 



13. O. crispum, Hedw. (curled Bristle-Moss); stems erect, 

 leaves lanceolato subulate much crisped when dry, capsule 

 oblongo- clavate furrowed, teeth of the peristome 8 geminate 

 patent reflexed, calyptra very hairy. Hedw. St. Cr. v. 2. t. 35, 

 Sp. Muse. t. 162. Schwaegr. Suppl. v. 1. P. II. p. 23. Fl. 

 Brit. p. 1266. E. Bot. t. 996. Hobs. Br. Mosses, v. 1. n. 54. 



Drum. Muse. Scot. v. 1. n. 58 Bryum striatum, 2. Linn. — 



Dill. Muse. t. 55. f. 11. 



Abundant on trees ; rarely found upon walls and stones. Fr. Aug. 

 — The leaves of this common and well-marked species of the genus 

 are frequently infested with a small brown parasite, the Conferva 

 Orthotrichi. 



•4-+- Cilia sixteen. 



14. O.pulcMllum, Sm. (elegant Bristle-Moss); stems creep- 

 ing short, leaves narrow-lanceolate crisped when dry, teeth of 

 the peristome 16 approaching in pairs patent (red), calyptra 

 almost glabrous plaited at the base. E. Bot. t. 1787. Hobs. Br. 

 Mosses, v. 1. n. 57. Drum. Muse. Scot. v. 1. n. 55. Muse. 

 Brit.ed. 2. p. 134. t. 21. 



On trunks of trees ; particularly in subalpine countries. Fr. May. 

 — This is an exceedingly beautiful species and well deserves the name 

 which Smith has given it. The capsule, Mr. Wilson observes, is very 

 generally tuberculated. 



