[Thuidium. 



HYPNACE^i.j 



Peristome ferruginous, the teeth long, closely trabeculate below; 

 processes of endostome entire or perforated in the keel, cilia 34. 



Male plant small, the infl. with many ovate bracts, recurved at 

 apex. 

 HAS. Shady banks and in woods, common. Fr. 10-11 not common. 



Common as this moss is here, it does not appear to exist in N. America, 

 or has never been distinguished from the two allied species. To the other 

 European species must now be added T. PhMberti LIMPR. T. inttmtdwm 

 PHILIB. (non MITTEN), closely resembling T. vecognitum in the non-ciliated 

 perich. bracts, and probably not specifically different from it ; it is described 

 by Philibert in Rev. bryol. 1893, p. 33.* 



Great confusion has existed between T. tamariscifolium and T. recognition, 

 although Smith clearly recognized the specific value of the latter, and it is 

 interesting to read his observations on it in Trans. Linnean Soc. xiii, 459, 

 and Hooker's remarks in Muse. brit. 2 ed. 171 (1827). 



The male plant is generally very small and insignificant. 



2. THUIDIUM DELICATULUM (L. Hedw.} Mitt. 



Dioicous ; stems trailing, bipinnate. Cauline leaves widely cordato- 

 triangular, with a short lanceolate bluntish point, revolute at margin. 

 Perich. bracts ciliate in upper half. Apex of ramuline leaves with the 

 terminal cell crowned by 3 4 short acute papillae. (T. LXXXV, B.) 



SYN. Hypnnm filicinum, iamarisci foliis minimi s non splendentibus, setis, capsulis ct alls 



brevioribus DILL. Hist. muse. app. 546, t. 83, f. 6 (1741) et Herb. 

 Hypnum delicatulnm L. Sp. pi. 1125, the American plant only (1753)- ROTH Tent. Fl. 



germ, i, 467 (1788). HEDW. Stirp. cr. iv, 87, t. 33 (1797). Sp. Muse. 260. LESQ. 



JAMES Moss. N. Amer. 325 (1884). 



Hypnum tamariscinum g. delicatulum BRID. Bry. univ. ii, 441 (1827). 

 Hypnum proliferum, H. tamariscinum et Thuidium tamariscinum Auct. Americ. 

 Thuidium delicatulum MITT, in Journ. Linn. Soc. xii, 578 (1869). LINDB. Not. ur Saells. 



Fn. Fl. fenn. foer. xiii, 416 (1874). SCHIMP. Synops. 2 ed. 615 (1876). PHILIB. in Rev. 



bryol. 1880, p. 99. BOULAY Muse. Fr. 157 (1884). HUSN. Muse. gall. 309, t. 88 (1892). 



LIMPR. in RABENH. D. kr. fl. Laubm. ii, 832 (1895). Dix. & JAMES. Stud. Handb. 385 



(1896). 



Dioicous ; in loose yellow-green tufts, brown at base, stem 

 bipinnate, with filiform, branched, papillose paraphyllia. Stem leaves 

 from a wide cordate orange base, triangular, with a short lanceolate 

 recurved point ; the margin revolute for nearly all the length, nerve 

 vanishing at | the length. Branch-leaves ovate, acute, nerve lost 

 below the point ; ramuline leaves ovate, nerved to middle, the apical 

 cell oval, crowned with 3 4 acute papillae ; cells roundish-oval, the 

 papillae low and often bluntly forked. Outer perich. bracts smooth or 



* This has just been detected by Mr. Dixon (Craig Chailleach, 1893). 



