DICRANACE^.] 149 [Dicranum. 



more abbreviated. The plant referred here by Mitten I regard as a variety 

 of the next species. 



Dicr. spadiceum ZETTERST. (D. neglectum JURATZ.) is an extreme form 

 having much the aspect of a distinct species, but quite agreeing with 

 D. scoparium in its areolation. The leaves are quite entire and smooth at 

 back. 



From this it will be seen that D. scoparium is highly polymorphous, and 

 that the presence or absence of serrated margins to the leaf cannot be relied 

 upon to afford a distinctive character, yet a peculiar facies runs through all 

 its forms which will generally indicate the species, but the microscope must 

 also be used for confirmation. 



8. DICRANUM BONJEANI De Not. 



Dioicous ; laxly tufted, tomentose. Leaves lanceolate, erecto- 

 patent, glossy, undulated above, nerve lost below the serrated apex. 

 Capsule solitary, subcylindric, slightly curved, striated. (T. XXI, B.) 



SYN. Dicranum Bonjeani DE NOT. in LISA Elen. 29, et Syll. muse. 213 (1838), Epil. bri. ital. 



616 (1869). C. MUELL. Syn. i, 369 (1849). 



Dicr. undulatum (baud EHRH.) TURN. Muse. hib. 59 (1804). SM. Eng. bot. t. 2260 p.p. 

 HOOK. TAYL. Muse. brit. 57, t. 18 (1818). HOOK. Fl. scot. p. 2, 133 (1821), Br. Fl. ii, 41 

 (1833). GRAY Nat. arr. br. pi. i, 737 (1821). MACK. Fl. hib. P. 2, 24 (1836). JENS. Bry. 

 dan. 90 (1856). 



[ARTM. 

 18 (1855). 



I. MlLDE 



Bry. siles/72 (1869)." HO'BK. Syn. br. 111.48 (1873). HUSN. Mouss. nord-ouest 54 (1873). 

 JURATZ. Laubm. Oesterr.-ung. 49 (1882). 



Autoicous and dioicous; in large soft lax tufts, stems slender 

 4 6 in. high, covered with tomentum, at first whitish, finally 

 ferruginous, subcuspidate at apex. Leaves thin, erecto-patent, 

 yellowish-green, very glossy, sharply serrate and minutely transversely 

 undulate above, from a broad base, lanceolate acuminate, acute, nerve 

 vanishing below apex, narrow, smooth at back, or faintly serrate near 

 apex ; cells at base large, quadrang. brown, above elongate hexagono- 

 rectangular, upper narrowly elliptic or oblong, Seta solitary, slender, 

 yellowish above, pale red below; bracts short, from a broad base, 

 abruptly subulate, inner longer, convolute, nerve obsolete ; capsule 

 leptodermous, cernuous, incurved, turgid obovate-oblong, with a 

 substrumose neck, exannulate, yellowish-brown, striated with orange ; 

 calyptra large straw-colored; lid subulate, long as caps, pale red; 

 peristome as inZ). scoparium. pale purple. 



HAB. In moorland bogs and on damp shady banks ; not uncommon. 



Fr. 78. 



In fr. Forest of Ballochbui and Kinnoul (Croall 1855)! Doune (McKinlay 

 1866) ! Levens, Brandt Fell and Bowness (Barnes 1867) ! ! 



Var. ft. juniperifolium (Sendt.) 



Dicr. palustre (baud LA PYL.) BR. SCH. Bry. eur. fasc. 37-40, p. 39, t. 31 (1847). H/ 

 Skand. fl. RABENH. Deutsch. kr. fl. ii, S. 3, 146 (1848). WILS. Bry. br. 79, t. 18 (i 

 SCHIMP. Synops. 91 (1860), 2 ed 94 (1876). BERK. Handb. br. m. 279 (1863). M 



