. Memoirs and proceedings of the Manchester Literary & Philosophical Society . Fig. V. Nos. 1-3 show the gradual separation of the vascular supply to the Imsal sporangiophore 4 shows the Inindle supply to the sporangia on both sides of tlie main 5-9 show stages in the formation and separation of the remaining branches.(All figures drawn with the aid of a camera lucida.). t;v,^„,; tVio /i«to;i ^r iK» ,^ii tKo loft =\A^ Manchester Meinoiys, Vol. Iv. {\gi\), No. 0. ii that is, that there is one strand passing between each pairof sporangia throughout {Text-Jig. V. 4)
. Memoirs and proceedings of the Manchester Literary & Philosophical Society . Fig. V. Nos. 1-3 show the gradual separation of the vascular supply to the Imsal sporangiophore 4 shows the Inindle supply to the sporangia on both sides of tlie main 5-9 show stages in the formation and separation of the remaining branches.(All figures drawn with the aid of a camera lucida.). t;v,^„,; tVio /i«to;i ^r iK» ,^ii tKo loft =\A^ Manchester Meinoiys, Vol. Iv. {\gi\), No. 0. ii that is, that there is one strand passing between each pairof sporangia throughout {Text-Jig. V. 4). The spiral arrangement may therefore, quite reason-ably, be regarded as a secondary modification, admittingof the insertion of an unusually large number of sporangia,and probably correlated with the crowded arrangement ofthe parts. One last point in support of this view is that, thoughthe number of vascular bundles throughout is considerablyin excess of the normal, this is to be regarded as anecessary concomitant of the extra demands placed uponit, the characteristic, dominant, central strand being readilydistinguishable from base to apex and terminating themain fertile spike. Summary. 1. The specimen represents a condition of the fertile Ophioglossaceous spike derived by a process ofsplitting or chorisis. 2. Its robust character makes great demands upon the vascular supply and t
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Keywords: ., bookcentury1800, bookdecade1880, bookidmemoirsproce, bookyear1888
