Abstract
Anatomy, the study of internal construction, as compared to external morphology has the great disadvantage that its object usually is only open for observation after special preparation; often the studied spatial forms have to be synthesized by combination of the observations made on different sections.
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References
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K. Sprengel, Von dem Bau und die Natur der Gewächse, Halle 1812
C. F. Bris-seau-Mirbel, Éléments de physiologie végétale et de botanique, Paris 1815f.
Ad. Brongniart, Histoire des végétaux fossiles, I, Paris 1828, see p. 100.
H. von Mohl, De structura caudicis filicum arborearum, 1833, in: C. F. Ph. de Martius, Icones plantarum cryptogamicarum quas in itinere annis 1817–20 per Brasiliam instituto collegit et descripsit, Monachii 1828–1834; shortened and translated into German in: H. von Mohl, Vermischte Schriften botanischen Inhalts, Tübingen 1845, see p. 108.
H. van Mohl, Über den Bau des Stammes von Isoetes lacustris, Linnaea 1840, p. 181; Vermischte Schriften p. 122.
J. W. Moll, Phytography as a fine art, Leiden 1934, see p. 465.
A. de Bary, Vergl. Anatomie der Vegetationsorgane der Phanerogamen und Farne, Leipzig 1877.
Engler und Prantl, Die natürlichen Pflanzenfamilien, I, 4, Leipzig 1902.
W. Zimmermann, Die Phylogenie der Pflanzen, Jena 1930.
M. Hirmer, Handbuch der Paläobotanik, München und Berlin 1927.
Elise Hofmann, Paläohistologie der Pflanze, Wien 1934.
F. O. Bower, Primitive land plants also known as the Archegoniatae, London 1935.
Bower, op.c. p. 328.
F. Hegelmaier, Zur Morphologie der Gattung Lycopodium, Bot. Ztg 30, 1872, col. 773, see col. 797.
W. L. Beekman, Über die Torsion des Stengeis von Psilotum Bernhardi, Rec. trav. botan. néerl. 21, 1924, p. 1.
H. G. Holle, Über Bau und Entwickelung der Vegetationsorgane der Ophioglosseen, Bot. Ztg 33, 1875, col. 241, see col. 246.
Hegelmaier l.c. (f.n. p. 67), col. 796.
For the reason why this layer may be taken as the innermost cortex layer see J. C. Schoute, Die Stelär-Theorie, Groningen 1902, Groningen und Jena 1903, on p. 162.
E. Pfitzer, Ueber die Schutzscheide der deutschen Equisetaceen, Jahr. f. wiss. Bot. 6, 1867, p. 297, seep. 318.
See Schoute, op.c. p. 144 and moreover F. J. Meyer, Die Stelärtheorie und die neuere Nomenklatur zur Beschreibung der Wasserleitungsbahnen der Pflanzen, B.B.C. 33, 1, 1916, p. 129.
A. Heard, On old red sandstone plants showing structure, from Brecon (South Wales), The Quarterly Journal of the Geological Society of London, 83, 1928 (volume for 1927), p. 195; see p. 199 and PI. 13, fig. 7, PI. 14, fig. 3, 7.
C. Nägeli, Das Wachsthum des Stammes und der Wurzel bei den Gefäss-pflanzen und die Anordnung der Gefässstränge im Stengel, in: Nägeli, Beitr. z. wiss. Botanik, 1, 1858, p. 1, see p. 52.
F. J. Meyer, Die diaplektischen Leitbündel der Lycopodien im Lichte der vergleichenden Anatomie und der Paläobotanik nebst einem Ausblick auf die übrigen Pteridophyten, Engler’s Botan. Jahrb., 60, 1926, p. 317, see p. 324.
F. J. Meyer 1926, l.c. p. 319.
C. Nägeli, Über das Wachsthum des Gefässstammes, in: Schleiden und Nägeli, Zeitschr. f. wiss. Botan., 3 und 4, 1846, p. 129, see p. 133; C. Cramer, Ueber Lycopodium Selago, in: Nägeli und Cramer, Pflanzenphysiologische Untersuchungen 3, 1855, p. 10, see p. 14, C. Nägeli l.c. 1858, p. 53; Hegelmaier l.c. (f.n. p. 67), col. 792.
See foot-note 4 p. 71.
A. de Bary op.c. (f.n. p. 66) p. 293; R. J. Harvey-Gibson, Contributions towards a knowledge of the anatomy of the genus Selaginella, Spr. [The stem], Ann. of Bot. 8, 1894, p. 133.
See: C. Nägeli und H. Leitgeb, Entstehung und Wachsthum der Wurzeln, in: C. Nägeli, Beiträge zur wiss. Botan, 4, 1868, p. 73, esp. p. 124; Ph. Van Tieghem, Recherches sur la symétrie de structure des plantes vasculaires, Ann. d. Sc. nat. 5th ser, 13, 1870/1, p. 1, esp. p. 88; R. J. Harvey-Gibson, Contributions towards a knowledge of the anatomy of the genus Selaginella, IV, The root, Ann. of Bot. 16, 1902, p. 449; J. C. Th. Uphof, Contributions towards a knowledge of the anatomy of the genus Selaginella. The root. Ann. of Bot. 34, 1920, p. 493.
Nägeli und Leitgeb, l.c. p. 127.
Harvey-Gibson, l.c. 1902 (f.n. p. 72) p. 457.
Harvey-Gibson, l.c. 1902, p. 460.
Nägeli und Leitgeb, l.c. p. 126; Van Tieghem l.c. (f.n. p. 72) p. 97 devotes two pages to explain the anomalous case of S. Kraussiana and terminates by saying: “L’anomalie signalée par MM. Naegeli et Leitgeb disparaît ainsi en s’expliquant.” As far as I see the facts are not so easily to be reasoned away.
Hirmer op.c. (f.n. p. 66), p. 271.
F. E. Weiss, A Stigmaria with centripetal wood, Ann. of Bot. 22, 1908, p. 221.
W. H. Lang, Studies in the morphology of Isoetes. II. The analysis of the stele of the shoot of Isoetes lacustris in the light of mature structure and apical development. Mem. & Proc. Manchester Lit. & Phil. Soc. 59, 1914/15, no. 8.
F. O. Bower, Size and form, London 1930.
D. H. Scott, The old wood and the new, New Phytol. 1, 1902, p. 25.
Nägeli, l.c. (f.n. 4 on p. 71) p. 45.
J. C. Schoute, Beiträge zur Blattstellungslehre II. Über verästelte Baumfarne und die Verästelung der Pteropsida im allgemeinen, Rec. trav. bot. néerl. 11, 1914, p. 93, see p. 156; O. Posthumus, On some principles of stelar morphology, ibid. 21, 1924, p. 111, see p. 145, J. C. Schoute, On the foliar origin of the internal stelar structure of the Marattiaceae, ibid. 23, 1926, p. 269, see p. 271; J. C. Schoute, On pleiomery and meiomery in the flower, Ibid. 29, 1932, p. 164, see p. 214.
Harvey-Gibson, l.c. (f.n. 2 on p. 72) p. 172, Pl. 9 fig. 37.
E. C. Jeffrey, The structure and development of the stem in the Pteridophyta and Gymnosperms, Phil. Trans. 195, 1902, p. 119, seep. 144; Are there foliar gaps in the Lycopsida? Botan. Gaz, 46, 1908, p. 241,
Bower, op.c. 1935 (f.n. p. 67) p. 329.
Posthumus l.c. (f.n. p. 75) p. 155.
For examples see Bower op.c. 1935 (f.n. p. 67), p. 334.
Posthumus l.c. 1924 (f.n. p. 75), p. 155, 163; O. Posthumus, On the anatomy of the Hymenophyllaceae and the Schizaeaceae and some additional remarks on stelar morphology, Rec. trav. bot. néerl. 23, 1926, p. 94, see p. 102.
A. G. Tansley and R. B. J. Lulham, A study of the vascular system of Ma-tonia pectinata, Ann. of Bot. 19, 1905, p. 475, see p. 503.
Posthumus l.c. 1924 p. 166.
Posthumus l.c. 1924, p. 115–139.
D. T. Gwynne-Vaughan, Observations on the anatomy of solenostelic ferns, II, Ann. of Bot. 17, 1903, p. 689, see p. 708.
Tansley and Lulham, l.c. (f.n. p. 78), p. 505.
Posthumus l.c. 1924, p. 163.
See foot-note 3 p. 76.
D. H. Scott, Studies in fossil botany, 3rd ed., I, London 1920.
De Bary, op.c. (f.n.p. 66), p. 294.
Posthumus l.c. 1924, Ch. I.
Posthumus l.c. 1924, p. 118, fig. 1.
Posthumus l.c. 1924, p. 280.
Posthumus l.c. 1926 (f.n. p. 78), p. 102.
Posthumus l.c. 1924, p. 278.
A. G. Tansley, Lectures on the evolution of the Filicinean vascular system, New Phytol., 6, 1907, p. 25, 53, 109, 135, 148, 187, 219, 253; 7, 1908, p. 1, 29. Issued in book-form as New Phytologist Reprint 1908.
Tansley, New Phytologist, 1908, p. 2.
Schoute l.c. 1926 (f.n. p. 75), with quotations of literature; see moreover Tansley l.c. 1907, p. 193; F. O. Bower, The Ferns, Cambridge I, 1923 (p. 151), II, Cambridge 1926 (p. 101).
Tansley l.c. 1907, p. 223; Posthumus l.c. 1924, p. 258.
G. Mettenius, Über den Bau von Angiopieris, Abh. math. phys. Cl. K. Sachs. Ges. d. Wiss., 6, 1864, p. 501 see p. 525.
D. T. Gwynne-Vaughan, l.c. (f.n. p. 78), p. 708.
Schoute, l.c. 1926, p. 274.
Tansley l.c. 1907, p. 193.
Tansley, l.c. 1907, p. 227; Schoute, l.c. 1926.
Our detailed knowledge of the stelar structure of Psaronius has been founded by K. G. Stenzel (Über die Staarsteine, Nova Acta 24, 1854, p. 753; Psaronius in: “H. von Meyer, Palaeontographica, Beiträge zur Naturgeschichte der Vorwelt, 12, H. R. Goeppert, Die fossile Flora der Permischen Formation, Cassel 1864/’65”, p. 46; Die Psaronien, Beobachtungen und Betrachtungen, in: Beiträge zur Paläontologie und Geologie Österreich-Ungarns und des Orients, 19, 1906, p. 85); R. Zeiller (Bassin houiller et permien d’Autun en d’Épinac, 2, Flore fossile 1, in: Études des gites minéraux de la France, 1890, see p. 178); K. Rudolph (Psaronien und Marattiaceen, Denkschr. k. Akad. d. Wiss. Wien, math, naturw. Kl. 78, 1906, p. 165). Hirmer in his hand-book (op.c. 1927 (f.n. p. 66) see p. 545) gives an elaborate and thorough description of the anatomical facts known about Psaronius. In his text as well as in his diagrams, however, some misconceptions have crept in which may tend to cause confusion. The least harmful of these errors is that in Psaronius infarctus a difference is assumed between two kinds of dictyosteles, as every first, third, fifth etc. dictyo-stele is supposed to have no relation to the continued leaf-traces which only attach to the second, fourth etc. (op.c. p. 559 and fig. 680). As Ps. infarctus, described and pictured from one single specimen by Zeiller (op.c. p. 208) and afterwards elucidated from Zeiller’ figures with perfect clearness by Rudolph (l.c. p. 177, Pl. 2, fig. 1), belongs to the best known Psaronii, we are in the position to state that Ps. infarctus in no way differs from the ordinary scheme and that Hirmer’s fig. 680 should be cancelled. More important are two independent errors, expressed in fig. 674, representing the bundle course in Ps. Ungeri, after Stenzel’s drawings. Hirmer gives a radial section through a cylindrical stem part, and delineates a number of obconical dictyosteles, the one within the other. All these dictyosteles are represented as abutting free on the stelar surface; in a superficially tangential section through the stele we therefore should have met with all dictyosteles. From the description given above it must be clear however, that the outer bundles of the whole stele, from its formation in the sporeling up to its last stages
Posthumus l.c. 1924 (f.n. p. 75) p. 219. H. Karsten, quoted there, has been the first to understand the structure of a polycyclic stele (1847).
Posthumus l.c. 1924, p. 224.
Posthumus l.c. 1924, p. 240..
Posthumus l.c. 1924, p. 247.
Posthumus l.c. 1924, p. 258. 6) Tansley l.c. 1907, p. 196.
Posthumus l.c. 1924, p. 155.
Schoute l.c. 1926 (f.n. p. 75), p. 294.
R. Kidston and W. H. Lang, On old red sandstone plants showing structure, from the Rhynie Chert Bed, Aberdeenshire. I. Rhynia Gwynne-Vaughani, Kidston and Lang, Trans. Roy. Soc. Edinburgh, 51, p. 761, seep. 775.
R. Wilson Smith, Bulbils of Lycopodium lucidulum, Bot. Gaz. 69, 1920, p. 426.
K. G. Stenzel, Untersuchungen über Bau und Wachsthum der Farne. II, Über Verjüngungserscheinungen bei den Farnen, Nova Acta 28, 1861, p. 3.
W. C. Williamson, On the organization of the fossil plants of the Coal-measures, 3, Lycopodiaceae (continued), Phil. Trans. London, 162, 1873, p. 283:, see Pl. 43, fig. 19.
Jeffrey, l.c. 1902, (f.n. p. 76), p. 123.
Cramer, l.c. (f.n. p. 71), Pl. 31, fig. 1–10; Meyer l.c. 1926 (f.n. p. 71), Pl. 12.
Jeffrey, l.c. 1902, p. 124, 125.
J. C. Schoute, Über Zellteilungsvorgänge im Cambium, Verh. Kon. Ak. v. Wet. Amsterdam, 2nd sect. 9, 4, 1902, see p. 56.
J. C. Schoute, Über das Dickenwachstum der Palmen, Ann. d. Buitenzorg 26, 1912, p. 1, see p. 203.
Ph. Van Tieghem, Sur quelques points de l’anatomie des Cryptogames vasculaires, Bull. Soc. bot. de France, 30, 1883, p. 169, see p. 170.
Van Tieghem, l.c. p. 171.
L. A. Boodle, On the occurrence of secondary xylem in Psilotum, Ann. of Bot. 18, 1904, 0. 505.
K. Barratt, A contribution to our knowledge’ of the vascular system of the genus Equisetum, Ann. of Bot. 34, 1920, p. 201, see p. 217.
Van Tieghem, l.c. p. 170.
M. H. Kisch, The physiological anatomy of the periderm of fossil Lycopo-diales, Ann. of Bot. 27, 1913, p. 281, seep. 287.
Kisch l.c. p. 301, J. Walton, Scottish lower carboniferous plants: the fossil hollow trees of Arran and their branches (Lepidophloios Wünschianus Carruthers), Trans. Roy. Soc. Edinburgh 58, 1935, p. 313, see p. 327.
B. Kubart, Stigmaria Bgt., Mitth. naturw. Ver. Steiermark, 71, 1934, p. 33, see p. 35.
Kisch, l.c.
Hirmer introduces the new terms exophelloderm for phellem and endophel-loderm for phelloderm (Hirmer op.c. 1927, p. 216). As phellem and phelloderm are already neutral terms indicating the tissues formed to the outside and to the inside of the phellogen, irrespective of their differentiation, there seems no reason for this introduction.
For the terms polygenous origin and transition cambium see Schoute in J. J. Beyer, Die Vermehrung der radialen Reihen im Cambium, Rec. trav. bot. néerl. 24, 1927, p. 631, see p. 649.
Kisch, l.c. p. 291, fig. 5.
M. Hovelacque, Recherches sur le Lepidodendron selaginoides Sternb., Mém. Soc. Linn, de Normandie, 17, 1892, p. 1, see p. 158.
W. C. Williamson, A monograph on the morphology and histology of Stig-maria ficoides, The Palaeontographical Soc, Volume for the year 1886, London 1887, see PL 6, fig. 9, 45; PL 8 fig. 22.
Kisch, l.c. PL 24, fig. 2, zone c.
W. C. Williamson, On the organization of the fossil plants of the Coal-measures, II, Lycopodiaceae: Lepidodendra and Sigillariae, Phil. Trans. London, 162, 1873, p. 197, see Pl. 30. fig. 41; Williamson l.c. 1887 (f.n. 5 above), PL 8, fig. 15.
Kisch, l.c. p. 299.
Hirmer op.c. 1927, p. 216.
B. Renault, Structure comparée de quelques tiges de la flore carbonifère, Nouv. Arch, du Mus. d’Hist. Nat. 2nd ser, 2, 1879, p. 213, see p. 252 and especially PL 10, fig. 6, 9–14.
Kisch, l.c. p. 308.
Williamson op.c. 1887 (f.n. p. 88), PL 8, fig. 23, 24.
Described for Sigiïlaria spinulosa in: B. Renault, Recherches sur les végétaux silicifiés d’Autun, Étude du Sigiïlaria spinulosa, par MM. B. Renault et Grand’Eury, Mém. prés, par divers savants à l’Acad. d. Sc. de l’Inst. Nat. de France, 22, 9, 1876, see especially the half schematic drawings PL 1, fig. 5, PL 4, fig. 20–22 for the general dilatation, and fig. 23 and its explanation for the gradual difference between inner and outer part.
Kisch, l.c. p. 308.
E. Russow, Vergleichende Untersuchungen betreffend die Histiologie der vegetativen und sporenbildenden Organe und die Entwickelung der Sporen der Leitbündel-Kryptogamen, etc. Mém. Acad. Imp. d. Sc. St. Pétersbourg, 7th ser. 19, 1, 1872, see p. 119.
Van Tieghem, l.c. (f.n. p. 86), p. 171.
Scott, l.c. 1920 (f.n. p. 79), p. 80; Hirmer l.c. 1927, p. 352; Van Tieghem on the other hand writes that the secondary xylem first appears outside the protoxylem (l.c. p. 173).
Scott, op. c. 1920, p. 25.
Hirmer op.c. 1927, p. 389.
Hirmer overrates both the frequency and the amount of this dilatation when he supposes (op. c. 1927, p. 392) it to be a general feature of Arthropitys and believes it to be correlated with a striking increase of the pith cavity. In A. bistriata the whole phenomenon evidently failed (see B. Renault, Bassin Houiller et Permien d’Autun et d’Épinac, IV, Flore fossile, 2, Paris 1893-’96, in: Études des gîtes minéraux de la France; see especially Pl. 45, fig. 1, 3, Pl. 46, fig 2, 3) and in A. communis it may almost have been absent in some cases (ibid. Pl 48, fig, 2, 6); A. gigas on the other hand perhaps shows slight indications by the extension of the parenchyma cells perpendicular to the earliest wood (ibid. Pl. 50, fig. 2). The amount of the dilatation no doubt is exaggerated by Hirmer because he bases it on a comparison between morphologically incomparable objects: a strong branch with a great number of stout primary vascular bundles and a large pith cavity on one hand, and a weaker branch on the other hand where everything has been laid down on a smaller scale. Cf. moreover the related phenomena in Astromyelon in § 3, sub B II.
Lang, l.c. (p. 73); C. West and H. Takeda, On Isoetes japonica, A. Br., Trans. Linn. Soc. London, 2nd ser. 8, Botany, 1915, p. 333, see p. 343.
Special treatments of the root being rare for all plant groups, the works of Van Tieghem l.c. 1870/71 (f.n. p. 72) and of G. Poirault, Recherches anatomiques sur les Cryptogames vasculaires, Ann. d. sc. nat., 7th ser. 18, 1893, notwithstanding their early date may be quoted here; the latter contains an extensive chapter on the root (p. 114–158) with full quotation of the older literature.
H. Graf zu Solms-Laubach, Der tiefschwarze Psaronius Haidingeri von Manebach in Thüringen, Zeitschr. f. Bot. 3, 1911, p. 721.
In a recently published preliminary communication (B. Sahni, The roots of Psaronius, Intra-cortical or extra-cortical? — A discussion, Current Science 1935, p. 555) the author returns to the old view of Stenzel, that this tissue may have been secondary cortex, developing pari passu with the roots after the leaves had fallen. His arguments as given in the preliminary note are that at the outside of the pseudocortex a periderm was developed, and further that in a recent Liliacea Asphodelus tenuifolius numerous roots grow down through the cortex of the main root, so as to distend the main root very strongly. As far as I see at present neither of these facts can invalidate in the least the evidence brought forward by Solms-Laubach.
Nägeli und Leitgeb, l.c. (f.n. p. 72) p. 82.
G. Mettenius, Über Phylloglossum, Bot. Ztg 25, 1867, p. 97, see p. 99. 2) Nägeli und Leitgeb, l.c. p. 84, 109.
Ph. van Tieghem, Traité de botanique, 2nd ed. I, Paris 1891, p. 681.
Schoute, op.c. 1902/3 (f.n. p. 68), see p. 142.
See sor instance the specimen of Equisetum pictured by Van Tieghem l.c. 1870/71 (f.n. p. 72), Pl. 5, fig. 22.
See sor instance the specimens pictured by Van Tieghe l.c. 1870/’71 on PL 5, fig. 18 (Lastraea) and 27 (Botrychium).
See sor instance the specimens pictured by Van Tieghem l.c. 1870/71, PL 4, fig. 11 (Marattia); a much larger and moreover a fistular pith may be found in large specimens of Astromyelon, the root of Calamités, the smaller specimens having a solid pith or no pith at all.
Van Tieghem l.c. 1870/’71, p. 86.
R. B. Thomson, A seed-plant feature of the root in Mavattiaceae, New Phytol. 33, 1934, p. 96.
Nägeli und Leitgeb, l.c. 1868, (f.n. p. 72) p. 143.
Van Tieghem l.c. 1870/’71, Pl. 3, fig. 5, 6.
Nägeli und Leitgeb, l.c. 1868, p. 129.
Van Tieghem, l.c. 1870/’71, p. 88.
Nägeli und Leitgeb, l.c. 1868, p. 121.
Nägeli und Leitgeb, l.c. 1868, p. 134, Pl. 19, fig. 8–10.
Russow l.c. (f.n. p. 90), p. 122; Van Tieghem l.c. 1870/’71, p. 108; Poirault l.c. (f.n. p. 93), p. 142.
Nägeli l.c. 1858 (f.n. 1 on p. 71), p. 52.
Van Tieghem, l.c. 1883 (f.n. p. 86), p. 170.
Sahni, l.c. (f.n. p. 93), p. 556.
Renault op. c. 1893/’96 (f.n. p. 91).
Renault op.c. Pl. 56, fig. 6, reproduced in most text-books. 6) Renault op.c. Pl. 53, fig. 2, 5, 6, 7.
Renault op.c. Pl. 56, fig. 6, just quoted, Pl. 57, fig. 1. and for the dilatation in the lacunar cortex PL 57, fig. 6.
R. J. Harvey-Gibson, Contributions towards a knowledge of the anatomy of the genus Selaginella, Spr. III, The leaf, Ann. of Bot. 11, 1897, p. 123, see description of S. Martensii, p. 130.
Hegelmaier l.c. 1872 (f.n. p. 67), col. 817–818.
Harvey-Gibson, l.c. 1897, p. 151.
A. Braun, Über die Isoetes-Arten der Insel Sardinien, Monatsber. k. pr. Akad. d. Wiss. Berlin a. d. J. 1863, Berlin 1864, p. 554, see p. 587.
D. H. Scott, On the occurrence of Sigillariopsis in the lower coal-measures of Britain, Ann. of Bot. 18, 1904, p. 519.
T. G. Hill, On the presence of a parichnos in recent plants, Ann. of Bot. 20, 1906, p. 267.
R. Graham, An anatomical study of the leaves of the Carboniferous Arborescent Lycopods, Ann. of Bot. 49, 1935, p. 587.
Renault, op.c. 1893/’96 (f.n. p.91), Pl. 34, fig. 4–8 (L. esnostense); Scott, op.c. 1920 (f.n. p. 79), p. 143 (L. Hickii).
Renault, op.c. 1893/’96, PL 41 fig. 7, 19 (S. spinulosa), 23 (S. Brardi).
F. E. Weiss, The vascular branches of Stigmarian rootlets, Ann. of Bot. 16, 1902, p. 559; 18, 1904, p. 180.
A polystelic condition in the simple sporophyll stalk of Equisetum is described by A. Santschi in Contribution à l’étude anatomique du système vasculaire d’Equisetum, Mém. Soc. vaudoise Sc. nat. 5, 1935, p. 103.
Harvey-Gibson l.c. 1897, (f.n. p. 98), p. 152 (Selaginella Lyallii).
Poirault l.c. (f.n. p. 93), p. 198.
Posthumus l.c. 1924 (f.n. p. 75), p. 170–193.
K. Thomae, Die Blattstiele der Farne, Jahrb. f. wiss. Bot., 17, 1886, p. 99.
Posthumus l.c. 1924, p. 146.
Thomae l.c. p. 119.
Van Tieghem l.c. 1883 (f.n. p. 86), p. 171.
J. C. Costerus, Het wezen der lenticellen, Thesis Utrecht 1875, see p. 35.
H. Potonié, Anatomie der Lenticellen der Marattiaceen, Jahrb. K. bot. Garten Berlin, 1, 1881, p. 307f.
A. J. Eames, Morphology of vascular plants. Lower groups (Psilophytales to Filicales), New York and London, 1936.
op. c. p. 355.
op. c. p. 354. As the term rhizomorph might give rise to confusion with rhizo-phore, and especially as the term rhizome may be used equally well, the introduction of the new term does not seem to be necessary.
Th. Spieker, l.c. (f. n. p. 62), see p. 186.
Solms-Laubach, l.c. (f. n. p. 34), see p. 228.
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Schoute, J.C. (1938). Anatomy. In: Verdoorn, F., et al. Manual of Pteridology. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-6111-6_2
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