. The Botanical magazine. Plants; Plants -- Japan. 122 THE BOTANICAL MAGAZINE. IToi. xxxv. No. "5ï¼ the . preceding species, because leaves are arranged in % clock- wise man ner. Foliar traces, two in number, depart from both sides of a gap (Fig. 4, A ï¼ marked with X )⢠Polystichum varium (L.) Pr. Oblique or erect rhizome with leaves arranged very closely in % clockwise manner. The stelar con- struction is quite similar to that of the above mentioned species. The nuttiDer of foliar traces is five to seveu, one departing from the bottom, the others from both sides of a gat), liie last pa
. The Botanical magazine. Plants; Plants -- Japan. 122 THE BOTANICAL MAGAZINE. IToi. xxxv. No. "5ï¼ the . preceding species, because leaves are arranged in % clock- wise man ner. Foliar traces, two in number, depart from both sides of a gap (Fig. 4, A ï¼ marked with X )⢠Polystichum varium (L.) Pr. Oblique or erect rhizome with leaves arranged very closely in % clockwise manner. The stelar con- struction is quite similar to that of the above mentioned species. The nuttiDer of foliar traces is five to seveu, one departing from the bottom, the others from both sides of a gat), liie last pair is always larger than the others (Fig. 4ï¼ A ï¼ marked withã). Polystichum Standishii (Moore) Chr. Erect rhizome with 2ã counterclockwise foliar arrangement. The stelar struc- ture is quite contrariwise to the five to seven in number. General Considerations and Conclusions. The gaps of the stele above described, have the relation to foliar traces. The foliar traces depart from the margin of gaps as one, two, three or more separate strands according to different species. In his paper advocating his view of the absence of foliar gaps in Lycopsida, Jeffrey^^ characterized the foliar gap in the following manner : "the foliar gap may be distinguished from the other gaps in the wall of the fibrovascular hoUoW cylinder by the fact that it occurs immediately above aleaf trace. A true foliar gap, moreover, is always related to put a single leaf-trace. If several traces appear in relation to a stelar gap and especially if they are related to the side of the gaps, it may be concluded at once that no true foliar gap is ; Following this restriction the gaps of Polypodiaceous 1)Jeffrey, E. C.(1908) Are there foliar gaps in Lycopsidaï¼âBot. Gaz., Vol. 46, p. Fig. IV. Developing figures of steles with f clockwise (A) or counter- clockwise (B) phyllotaxy. The depart- ing points of foliar traces are also iiKirked (details in text). preceding. Foliar trac
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