Natuurtijdschriften: Natuurtijdschriften

Cytotaxonomic studies in the genus Symphytum.II. Crossing experiments between Symphytum officinale L. and Symphytum asperum Lepech. Article

Acta botanica neerlandica, 18(4), 544-549.

Th.W.J. Gadella and E. Kliphuis

January 1969
An explanation of the different pH optima for indoleacetic acid oxidase activity of extracts from roots of pea and cucumber Article

Acta botanica neerlandica, 18(4), 538-543.

M.G.H. Janssen

January 1969
The influence of acropetally transported indoleacetic acid on the geotropism of intact pea roots and its modification by 2, 3, 5-triiodobenzoic acid Article

Acta botanica neerlandica, 18(4), 528-537.

H. Konings

January 1969
Palynology of the first 30 metres of a 120 m deep section in Northern Greece Article

Acta botanica neerlandica, 18(4), 511-527.

T.A. Wijmstra

January 1969
Pavlova mesolychnon (Chrysophyta) a new species from the Tamar estuary, Cornwall Article

Acta botanica neerlandica, 18(4), 496-510.

J. van der Veer

January 1969
The occurrence of Pythium in the Netherlands. II Another heterothallic species: Pythium splendens Braun Article

Acta botanica neerlandica, 18(4), 489-495.

A.J. van der Plaats-Niterink

January 1969
Book Reviews Article

Acta botanica neerlandica, 18(3), 487-488.

M. Jacobs

January 1969
Meetings of the Botanical Society of the Netherlands Article

Acta botanica neerlandica, 18(3), 483-486.

onbekend

January 1969
Factor analysis as a method in synecological research Article

Acta botanica neerlandica, 18(3), 477-482.

L.F.M. Fresco

January 1969
Biosystematic studies on Spergularia media and S. marina in the Netherlands II. The morphological variation of S. marina Article

Acta botanica neerlandica, 18(3), 467-476.

A.A. Sterk

January 1969
Novitates Burseracearum III (Addenda) Article

Acta botanica neerlandica, 18(3), 466-466.

J.J. Swart

January 1969
New taxa and combinations in the neotropical Olmedieae Article

Acta botanica neerlandica, 18(3), 462-465.

C.C. Berg

January 1969
The penetration and adsorption of Cesium in bean leaves Article

Acta botanica neerlandica, 18(3), 455-461.

E. Levi

January 1969
Auxin transport, auxin metabolism and ageing Article

Acta botanica neerlandica, 18(3), 447-454.

H. Veen

January 1969
A new species of Urtica from the Papuan highlands and an emended distinction of Urtica urens and dioica Article

Acta botanica neerlandica, 18(3), 442-446.

M. Zandee

January 1969
The atlantic species of Rhizophora Article

Acta botanica neerlandica, 18(3), 434-441.

F.J. Breteler

January 1969
The form of indoleacetic acid oxidase of pea roots Article

Acta botanica neerlandica, 18(3), 429-433.

M.G.H. Janssen

January 1969
Pauldopia, a new genus of southeast Asian Bignoniaceae Article

Acta botanica neerlandica, 18(3), 425-428.

C.G.G.J. van Steenis

January 1969
Studies on productivity of Coffee. III – Differences in photosynthesis between four varieties of coffee Article

Acta botanica neerlandica, 18(3), 420-424.

M.A. Nunes, J.F. Bierhuizen and C. Ploegman

January 1969
The histochemical localization of dehydrogenases in the cotyledons of Pisum sativum L. during germination Article

Acta botanica neerlandica, 18(3), 406-419.

C. Kollöffel

January 1969
New species of Souroubea (Marcgraviaceae) Article

Acta botanica neerlandica, 18(3), 401-405.

A.C. de Roon

January 1969
Meetings of the Botanical Society of the Netherlands Article

Acta botanica neerlandica, 18(2), 396-400.

onbekend

January 1969
A contribution to the wood anatomy of South American (chiefly Suriname) Rubiaceae. II Article

Acta botanica neerlandica, 18(2), 377-395.

J. Koek-Noorman

January 1969
The african Dichapetalaceae I Article

Acta botanica neerlandica, 18(2), 375-376.

F.J. Breteler

January 1969
Studies on productivity of Coffee. II – Effect of soil moisture on photosynthesis and transpiration of Coffea arabica Article

Acta botanica neerlandica, 18(2), 367-374.

J.F. Bierhuizen, M.A. Nunes and C. Ploegman

January 1969
The role of changes in enzyme activities in the regulation of carbohydrate dissimilation in potato tuber tissue after wounding or infection with Gibberella zeae Article

Acta botanica neerlandica, 18(2), 353-366.

J.D. Verleur

January 1969
The influence of light of different spectral regions on the synthesis of phenolic compounds in gherkin seedlings, in relation to photomorphogenesis. VI. Phenol synthesis and photoperiodism Article

Acta botanica neerlandica, 18(2), 347-352.

G. Engelsma

January 1969
An investigation of the polyphenoloxidase test with catechol and proline Article

Acta botanica neerlandica, 18(2), 343-346.

M.G.H. Janssen

January 1969
Action of hydrolytic enzymes on spinach chloroplast fragments Article

Acta botanica neerlandica, 18(2), 339-342.

C. Bril, J.F. Hobbelen, J.C. van Miltenburg, Y. Schouwstra and J.B. Thomas

January 1969
Biosystematic studies of Spergularia media and S. marina in the Netherlands I. The morphological variability of S. media Article

Acta botanica neerlandica, 18(2), 325-338.

A.A. Sterk

January 1969
On the contribution of air-borne salt to the gradient character of the Voorne Dune area Article

Acta botanica neerlandica, 18(2), 315-324.

Clara J.M. Sloet van Oldruitenborgh and Els Heeres

January 1969
The lignin of Populus nigra L. cv. ‘Italica’. A comparative study of the lignified structures in tissue cultures and the tissues of the tree Article

Acta botanica neerlandica, 18(2), 241-314.

Catharina J. Venverloo

January 1969
Intimations on Quaternary palaeoecology of Africa Article

Acta botanica neerlandica, 18(1), 230-239.

E.M. van Zinderen Bakker

January 1969
Studies on phloem exudation from Yucca flaccida Haw. VII. The effect of cooling on exudation Article

Acta botanica neerlandica, 18(1), 224-229.

P.M.L. Tammes, C.R. Vonk and J. van Die

January 1969
Joseph Gaertner and his carpologia Article

Acta botanica neerlandica, 18(1), 216-223.

F.A. Stafleu

January 1969
Nucleic acids in plastids and starch formation Article

Acta botanica neerlandica, 18(1), 203-215.

R. Salema and N.P. Badenhuizen

January 1969
Three new species and a new subspecies of Marcgravia and Souroubea (Marcgraviaceae) from Central America Article

Acta botanica neerlandica, 18(1), 197-202.

A.C. de Roon

January 1969
Some investigations on the Mycorrhiza of Calluna, Erica and Vaccinium Article

Acta botanica neerlandica, 18(1), 180-196.

P.J. Nieuwdorp

January 1969
The wood structure of Dicranostyles (Convolvulaceae) Article

Acta botanica neerlandica, 18(1), 173-179.

Alberta M.W. Mennega

January 1969
Time, space, light and darkness in the metabolic flare-up of the Sauromatum appendix Article

Acta botanica neerlandica, 18(1), 159-172.

Bastiaan J.D. Meeuse and Richard G. Buggeln

January 1969
Notes on American Loganiaceae III. Revision of Bonyunia Rich. Schomb. Article

Acta botanica neerlandica, 18(1), 152-158.

A.J.M. Leeuwenberg

January 1969
Some observations on barium sulphate in Spirogyra Article

Acta botanica neerlandica, 18(1), 143-151.

D.R. Kreger and H. Boeré

January 1969
Two new species of ferns from Suriname Article

Acta botanica neerlandica, 18(1), 138-142.

K.U. Kramer

January 1969
The occurrence of asperulosidic glycosides in the Rubiaceae Article

Acta botanica neerlandica, 18(1), 124-137.

P. Kooiman

January 1969
A contribution to the wood anatomy of South American (chiefly Suriname) Rubiaceae. I. Article

Acta botanica neerlandica, 18(1), 108-123.

J. Koek-Noorman

January 1969
An electron-microscopical study of the plasmodesmata in the roots of young barley seedlings Article

Acta botanica neerlandica, 18(1), 99-107.

R.J. Helder and J. Boerma

January 1969
Gregor Mendel and Hugo de Vries on the species concept Article

Acta botanica neerlandica, 18(1), 95-98.

J. Heimans

January 1969
Oscillations in the redistribution of the growth sibstance naphthylacetic acid after phototropic induction Article

Acta botanica neerlandica, 18(1), 84-94.

I. de Haan

January 1969
Chromosome numbers and seedling morphology of some Angiospermae collected in Brazil Article

Acta botanica neerlandica, 18(1), 74-83.

Th.W.J. Gadella, E. Kliphuis, J.C. Lindeman and E.A. Mennega

January 1969
Cytotaxonomic notes on African Papilionaceae Article

Acta botanica neerlandica, 18(1), 67-73.

J.A. Frahm-Leliveld

January 1969
Responses of bean plants to root temperatures. IV Translocation of 22Na applied to the leaves Article

Acta botanica neerlandica, 18(1), 58-66.

R. Brouwer and E. Levi

January 1969
On a case of polyembryony in Pterocarya fraxinifolia (Juglandaceae) and on polyembryony in general Article

Acta botanica neerlandica, 18(1), 50-57.

F. Bouman and F.D. Boesewinkel

January 1969
The effect of low temperature on dry matter production, chlorophyll concentration and photosynthesis of maize plants of different ages Article

Acta botanica neerlandica, 18(1), 39-49.

Th. Alberda

January 1969
Intercellular polar transport and the role of the plasmodesmata in coleoptiles and Vallisneria leaves Article

Acta botanica neerlandica, 18(1), 14-38.

W.H. Arisz

January 1969
Theo J. Stomps Article

Acta botanica neerlandica, 18(1), 12-13.

B. Polak

January 1969
G. van Iterson Jr. Article

Acta botanica neerlandica, 18(1), 8-11.

A.D.J. Meeuse

January 1969
Cornelius Elisa Bertus Bremekamp Article

Acta botanica neerlandica, 18(1), 6-7.

J. Lanjouw

January 1969
Willem Hendrik Arisz Article

Acta botanica neerlandica, 18(1), 3-5.

I. de Haan

January 1969
Preamble Article

Acta botanica neerlandica, 18(1), 1-1.

H.F. Linskens

January 1969
Boekaankondiging Article

Gorteria Dutch Botanical Archives, 4(12), 218-218.

C. Kalkman

January 1969
De vegetatie van een gestoorde strook grond in een Goois heideveld Article

Gorteria Dutch Botanical Archives, 4(12), 217-218.

H. Griffioen

January 1969
Wat is „Plantago intermedia”? Article

Gorteria Dutch Botanical Archives, 4(12), 212-217.

F. Adema

January 1969
Een vruchtbaar terrein van studie Article

Gorteria Dutch Botanical Archives, 4(12), 210-212.

M. Jacobs

January 1969
Een weinig gebruikt kenmerk van Ajuga genevensis L Article

Gorteria Dutch Botanical Archives, 4(12), 208-210.

Ch. Henriëtte Andreas and Maja C. Salverda

January 1969
Vindplaatsen van stinseplanten in Friesland Article

Gorteria Dutch Botanical Archives, 4(12), 203-208.

D.T.E. van der Ploeg

January 1969
Excursie Article

Gorteria Dutch Botanical Archives, 4(11), 202-202.

onbekend

January 1969
Boekaankondiging Article

Gorteria Dutch Botanical Archives, 4(11), 200-201.

onbekend

January 1969
Differentiatie van Scirpus maritimus L. in Nederland Article

Gorteria Dutch Botanical Archives, 4(11), 193-200.

E. Irene Robertus-Koster

January 1969
Enige opmerkingen betreffende Gagea lutea en het begrip stinseplant Article

Gorteria Dutch Botanical Archives, 4(11), 191-193.

G. Londo

January 1969
De identiteit van Portulaca advena Reichg. & Von Poellnitz Article

Gorteria Dutch Botanical Archives, 4(11), 189-191.

R. Geesink

January 1969
Cochlearia pyrenaica DC. in Nederland aangetroffen Article

Gorteria Dutch Botanical Archives, 4(11), 187-188.

S.J. van Ooststroom

January 1969
Boekaankondigingen Article

Gorteria Dutch Botanical Archives, 4(10), 184-186.

onbekend

January 1969
Enkele opmerkingen over het geslacht Enteromorpha Link op de schorren en slikken van Z.W.-Nederland Article

Gorteria Dutch Botanical Archives, 4(10), 178-183.

P.H. Nienhuis

January 1969
Nieuwe vondsten van zeldzame planten in Nederland, hoofdzakelijk in 1968 Article

Gorteria Dutch Botanical Archives, 4(10), 167-177.

S.J. van Ooststroom and J. Mennema

January 1969
Boekbesprekingen Article

Gorteria Dutch Botanical Archives, 4(9), 166-166.

J.H. Kern and J. Mennema

January 1969
Korte mededeling Article

Gorteria Dutch Botanical Archives, 4(9), 165-165.

S.J. van Ooststroom

January 1969
Zijn Gagea lutea (L.) Ker-Gawl. en Gagea spathacea (Hayne) Salisb. in N.O.-Nederland als stinseplanten te beschouwen? Article

Gorteria Dutch Botanical Archives, 4(9), 161-165.

H.P.M. Hillegers

January 1969
Verspreiding van wegbermplanten in Oostelijk Flevoland Article

Gorteria Dutch Botanical Archives, 4(9), 151-160.

J. van der Toorn, B. Donougho and M. Brandsma

January 1969
Een westelijke vindplaats van Carex elongata L Article

Gorteria Dutch Botanical Archives, 4(9), 150-151.

J. den Held

January 1969
Nog eens Polypodium: een nieuw anatomisch-morfologisch kenmerk voor onze drie Europese soorten Article

Gorteria Dutch Botanical Archives, 4(9), 147-150.

E. van Rompaey

January 1969
Interessante terugmeldingen Article

Op het Vinkentouw, 2(4), 66-66.

onbekend

January 1969
Historische ringen Article

Op het Vinkentouw, 2(4), 65-65.

R. Schut

January 1969
E.J. Kortenoever gehuldigd Article

Op het Vinkentouw, 2(4), 65-65.

onbekend

January 1969
Verslag ringersdag 1969 Article

Op het Vinkentouw, 2(4), 64-64.

B.J. Speek

January 1969
Buitenlandse ringverslagen Article

Op het Vinkentouw, 2(4), 62-63.

H.J. Lichtenbeld

January 1969
Gids voor ringers, boekbespreking Article

Op het Vinkentouw, 2(4), 60-62.

B.J. Speek

January 1969
Ringmaten van boerenzwaluwen Article

Op het Vinkentouw, 2(4), 59-60.

G. van Tol

January 1969
Ringen aan- of boven het loopbeen: Kokmeeuw Article

Op het Vinkentouw, 2(4), 59-59.

onbekend

January 1969
Ringen aan- of boven het loopbeen: purperreiger Article

Op het Vinkentouw, 2(4), 58-58.

C.J.A. Wijnaendts

January 1969
Het vangen van spechten Article

Op het Vinkentouw, 2(4), 55-57.

G.M.P. Sponselee

January 1969
Interessante terugmeldingen Article

Op het Vinkentouw, 2(3), 51-51.

onbekend

January 1969
Historische ringen Article

Op het Vinkentouw, 2(3), 49-50.

M.J. Tekke

January 1969
Uit het nest geworpen pulli Article

Op het Vinkentouw, 2(3), 49-49.

R. Schut

January 1969
Zeldzame vogelsoorten Article

Op het Vinkentouw, 2(3), 48-48.

M.J. Tekke

January 1969
De parijse ringcentrale schrijft ons het volgende: Article

Op het Vinkentouw, 2(3), 48-48.

R.D. Etchecopar

January 1969
Waarom worden in Nederland zo weinig boomklevers geringd? Article

Op het Vinkentouw, 2(3), 47-47.

H.F.M. de Beer

January 1969
De veldleeuwerik als verkeersslachtoffer Article

Op het Vinkentouw, 2(3), 46-46.

W. de Jong

January 1969
Experiment kokmeeuw 1968 Article

Op het Vinkentouw, 2(3), 43-45.

B.J. Speek

January 1969
Verplaatsingen van de roodborst door West-Europa Article

Op het Vinkentouw, 2(3), 37-42.

H.J. Lichtenbeld

January 1969
Het vangen van graspiepers met behulp van een bandrecorder Article

Op het Vinkentouw, 2(3), 36-37.

P.C. van Spanje

January 1969

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