Biyophyten. — Pteridophyten. 253 



Malier, K,, Rabenhorst, Kryptogamen Flora von Deutsch- 

 land, Oesterreich und der Schweiz. (Vol. VI. Lieferuno- 8. 1909.) 



Diese Lieferung bringt die Fortsetzung der Gattung Marsupella 

 und zwar die folgenden Arten: 



M. sparsifolla (Lindb.) Dum., M. Spnicei (Limpr.) Bernetj M. 

 pi'ofiifida (Lindb.), M. icstidata (Hübn.) Spr. und deren var. neglecta 

 (Limpr.) K. iVL, M. Boeckii (Austin) Lindb. und deren var. intricata 

 (Lindb.) Arn. sowie var. incrassata Arn. & Sons, M. 7ievicensis {Curr.) 

 Kaal., M. pyginaea (Limpr.) Steph., M. conimutata (Limpr.) Bernet, 

 M. hadensis Schfifn., M. Fiinkii (W. & M.J, M. ramosa K. M. nova 

 species (aus Ba^'-ern), M. emarginata (Ehrh.) Dum. und deren var. 

 densifolia (Nees) Breidler, M. aqiiatica (Ldbg.) Schffn. und deren var. 

 gracüis Jens., M. Pearsoni Schffn., M. groenlmidica Jens., M. Sulli- 

 vanti (De Not.) Evans, M. sphacelata (Gies.) Lindb., M. Joergensii 

 Schffn. 



Weiter folgt Prasanthus suecicus (G.) Lindb., Southbya stillicidi- 

 ai'um (Raddi) Lindb., 5. nigrella (De Not.) Spr., ArnelUa fennica (G.) 

 Lindb., Gongylanthns evicetorurn (Raddi) Nees, Alicidaria compressa 

 (Hook.) Nees. 



Wie bisher ist das Heft mit reichlichen Abbildungen versehen, 

 welche das leichtere Erkennen dieser meist winzigen und je nach 

 dem Standorte oft sehr variablen und schwierigen Pflanzen wesent- 

 lich unterstützen. F. Stephani. 



Lang, W. H., Preliminar}^ Statement on the Morpholog}' of 

 the Cone of Lycopodiiun cerniiinn and its bearing on the 

 Affinities of Spencerites. (Proc. Roy. Soc. Edinburgh, Vol. XXVIII, 

 Part V, 21. p. 356—367. with 4 figures in the text. 1908.) 



The cone of Lycopodiuni cernuwn consists of alternating whorls 

 of five sporoph^^lls, each sporoph^'il having a nearly erect lamina 

 and a horizontal base, close to the distal limit of which the large 

 sporangium is attached by a ver}' short stalk consisting of lignified 

 tracheide-like cells. The dorsal part of the sporophyl base is occupied 

 b\^ a large mucilaginous mass reaching to and involving the lower 

 epidermis. The disappearance of this mass of mucilage makes the 

 mature sporoph3il appear peltate; it should be called pseudopeltate. 

 As the outer margin of the base of the sporophyll has a small 

 downward projection it is also slightl}" truly peltate. The form of 

 this appendage is determined hy the fact that when young it fits in 

 between the sporangium and the sporophyll below. The bases of 

 the sporophjäls extend down between the sporangia of the alternating 

 whorl of sporophylls immediatel}" below, and these decurrent bases 

 are coherent with the margins of the two sporophylls between which 

 the}'- lie; this character becomes obscured at maturit}^ by the dis- 

 appearance of the mucilaginous masses. Mucilage cavities occur also 

 in L. iuicudatmn but being less extensive do not make the sporo- 

 phyll pseudopeltate; in this species the sporophylls are not coherent 

 laterall5^ Thus the cone of L. ceniiiiun is the most complex found 

 in the genus; it is then compared to Spencerites; iti both the sporo- 

 ph^ils have a narrow pedicel and an upturned lamina; further the 

 shape of sporophylls is essentially the same if we imagine, as the 

 author does, that the structureless mucilage of Spencerites has 

 escaped fossilization. In the latter genus there is a marginal ap- 

 pendage similar in shape and position to that of L. cernuiim. 

 The principal difference between the sporophj^lls of the two forms 



