Eucephalozia 43 



18. Cephalozia Lammersiana Hiiben.! 

 JanH. Lammersiana Hiibn. Hep. Germ. 165. — Junrj. bicuspidata ^i uligi- 

 nosa Nees, Eur. Leberm. II, 253, et (ex parte) 77 ohliquata Nees, I.e. 

 2-54:.— Jumi. bicuspidata E. Bot. t. 2239. 



A C. bicuspidata L. differt statura 2 — 3-plo elatiore; colore albicante 

 luridove — nuuquam roseo picto ; ilagellis nullis vel perraris ; folio- 

 rum laciniis magis insequilatis et acuminatis; foliolis frequenti- 

 oribus, ad plantascf prsecipue ; fiorescentia dioicfl, fcBminea semper 

 fere in ramo elongate) terminali ; bracteis lateralibus magis pro- 

 fande fissis, laciniis integerrimis ; perianthiis majoribus. 



Rab. locis uliginosis, saxosis liumidis, lacum marginibus umbrosis, etc. 

 per insulas Britannicas ut videtur satvulgata, etiamin totaEuropa 

 et America boreali temperata. 



This can hardly be considered more than the dioicous and perfect form of C. 

 bicuspidata, some even of the smaller forms of which are sometimes in part unisexual. 

 Whether species, subspecies, or variety, it is mostly easy to distinguish from C. bi- 

 cuspidata by its much larger size, tufted growth, the absence of flagella, the dioicous 

 inflorescence, and the female flowers terminating long branches — not on branches so 

 short as to seem lateral, as in C. bicuspidata ; although even in the latter an elongate 

 fertile branch is sometimes seen. What seems the normal form of C. Lammersiana 

 grows in large whitish tufts, and, where male plants are present along with the female, 

 it fruits abundantly. Underleaves are always present in the male plants, not only on 

 the spikes but (more rarely) also ou flowerless branches ; they are much shorter than 

 the leaves, subulate or ovate-lanceolate, mostly entire, rarely bidentate at the apex. 

 In the female plant they are nearly always confined to the involucres, and sometimes 

 only the uppermost pair of bracts is accompanied by an underleaf or bracteole. This 

 form I have gathered in Eskdale, Yorkshire, by rivulets, especially at the waterfall on 

 the Mirk Esk (Dec. i841); and Mr. Slater has found it in several other places in the 

 same valley. Mr. Stabler gathers it in bogs adjacent to Morecambe Bay. Sterile 

 specimens from Maize Beck, Teesdale (July, 1843) are large, erect, tufted, dull green, 

 tinged with lurid purple, here and there almost black. Leaves large, very concave, 

 rather narrow at the base, then dilated (especially on the postical margin) so as to be 

 broadly deltoideo-ovate ; lobes broad, subacuminate. A similar form, as to the colour 

 and the form of the leaves, was found by Dr. D. Moore in a bog on Connor Hill, Ire- 

 land. 



The E. Bot. plate 2239, " y?^w^. Siciis/ftfato," represents C. Lammersiana fairly 

 well ; while Hooker's figure (Brit. Jung. t. 11 — copied by Ekart in Syn. Jung. Germ, 

 t. 4, f. 23) is doubtless that of typical C. bicuspidata. 



