I C Verdoorn

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STERCULIACEAE

Authors: I C Verdoorn

Published in Bothalia, in 1964, in volume 8, issue 2, pages 177-179

Created: 2026-04-05, modified: 2026-04-05

doi:10.4102/abc.v8i2.1629

AMARYLLIDACEAE

Authors: I C Verdoorn

Published in Bothalia, in 1969, in volume 10, issue 1, pages 56

Created: 2026-04-05, modified: 2026-04-05

doi:10.4102/abc.v10i1.1511

STERCULIACEAE

Authors: I C Verdoorn

Published in Bothalia, in 1969, in volume 10, issue 1, pages 76-81

Created: 2026-04-05, modified: 2026-04-05

doi:10.4102/abc.v10i1.1520

STERCULIACEAE

Authors: I C Verdoorn

Published in Bothalia, in 1972, in volume 10, issue 4, pages 571-573

Created: 2026-04-05, modified: 2026-04-05

doi:10.4102/abc.v10i4.1565

HIPPOCRATEACEAE

Authors: I C Verdoorn

Published in Bothalia, in 1962, in volume 8, issue 1, pages 114-115

Created: 2026-04-05, modified: 2026-04-05

doi:10.4102/abc.v8i1.1613

THE GENUS PLINTHUS

Authors: I C Verdoorn

Published in Bothalia, in 1941, in volume 4, issue 1, pages 177-179

Created: 2026-04-05, modified: 2026-04-05

doi:10.4102/abc.v4i1.1714

The Oleaceae of Southern Africa

Authors: I C Verdoorn

Published in Bothalia, in 1956, in volume 6, issue 3, pages 549-639

Created: 2026-04-05, modified: 2026-04-05

doi:10.4102/abc.v6i3.1707

Encephalartos Natalensis

Authors: R A Dyer | I C Verdoorn

Published in Bothalia, in 1951, in volume 6, issue 1, pages 205-211

Created: 2026-04-05, modified: 2026-04-05

doi:10.4102/abc.v6i1.1688

CRINUM MACOWANII

Authors: I C Verdoorn

Published in Journal of South African botany, in 1956, in volume 22, pages 79-83

Created: 2024-07-23, modified: 2024-07-23

The Nomenclature of the Cape Acacia

Authors: I C Verdoorn

Published in Bothalia, in 1954, in volume 6, issue 2, pages 409-413

Created: 2026-04-05, modified: 2026-04-05

doi:10.4102/abc.v6i2.1698

THE TRANSVAAL ERICACEAE

Authors: I C Verdoorn

Published in JOURNAL OF SOUTH AFRICAN BOTANY, in 1954, in volume 20, pages 91-115

Created: 2024-06-11, modified: 2024-06-11

PLATE 1114. SANSEVIERIA DOONERI

Authors: I C Verdoorn

Published in The Flowering Plants of Africa, in 1951, in volume 28, pages 1-2

Created: 2025-11-29, modified: 2025-11-29

PLATE 961. HALLERIA LUCIDA

Authors: I C Verdoorn

Published in The Flowering Plants of Africa, in 1945, in volume 25, pages 1-2

Created: 2025-11-29, modified: 2025-11-29

PLATE 967. KALANCHOE CRUNDALLII

Authors: I C Verdoorn

Published in The Flowering Plants of Africa, in 1945, in volume 25, pages 1-2

Created: 2025-11-29, modified: 2025-11-29

PLATE 1009. ALBUCA TRANSVAALENSIS

Authors: I C Verdoorn

Published in The Flowering Plants of Africa, in 1947, in volume 26, pages 1-2

Created: 2025-11-27, modified: 2025-11-29

PLATE 1019. BULBINE TORTIFOLIA

Authors: I C Verdoorn

Published in The Flowering Plants of Africa, in 1947, in volume 26, pages 1-3

Created: 2025-11-27, modified: 2025-11-29

PLATE 1021. HYPOXIS RIGIDULA

Authors: I C Verdoorn

Published in The Flowering Plants of Africa, in 1947, in volume 26, pages 1-2

Created: 2025-11-27, modified: 2025-11-29

PLATE 978. COMBRETUM MICROPHYLLUM

Authors: I C Verdoorn

Published in The Flowering Plants of Africa, in 1945, in volume 25, pages 1-2

Created: 2025-11-29, modified: 2025-11-29

PLATE 1026. CLEMATOPSIS KIRKII

Authors: I C Verdoorn

Published in The Flowering Plants of Africa, in 1947, in volume 26, pages 1-2

Created: 2025-11-27, modified: 2025-11-29

PLATE 998. BARLERIA OBTUSA

Authors: I C Verdoorn

Published in The Flowering Plants of Africa, in 1946, in volume 25, pages 1-2

Created: 2025-11-29, modified: 2025-11-29

PLATE 1044. BULBINE STENOPHYLLA

Authors: I C Verdoorn

Published in The Flowering Plants of Africa, in 1948, in volume 27, pages 1-2

Created: 2025-11-29, modified: 2025-11-29

Revision of Hermannia subgenus Hermannia in southern Africa

Authors: I C Verdoorn

Published in Bothalia, in 1980, in volume 13, issue 1/2, pages 1-63

Created: 2026-04-05, modified: 2026-04-05

doi:10.4102/abc.v13i1/2.1291

THREE SPECIES OF STRYCHNOS WITH 1- SEEDED FRUITS

Authors: I C Verdoorn

Published in Bothalia, in 1939, in volume 3, issue 4, pages 583-588

Created: 2026-04-05, modified: 2026-04-05

doi:10.4102/abc.v3i4.1760

PLATE 882. ALOE ORTHOLOPHA

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1943, in volume 23, pages 1-2

Created: 2025-11-27, modified: 2025-11-29

PLATE 897. HYPERICUM SONDERI

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1943, in volume 23, pages 1-2

Created: 2025-11-27, modified: 2025-11-29

PLATE 885. CRYPTOSTEPHANUS VANSONII

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1943, in volume 23, pages 1-2

Created: 2025-11-27, modified: 2025-11-29

PLATE 887. CRINUM BUPHANOIDES

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1943, in volume 23, pages 1-2

Created: 2025-11-27, modified: 2025-11-29

PLATE 894. DICHROSTACHYS GLOMERATA

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1943, in volume 23, pages 1-2

Created: 2025-11-27, modified: 2025-11-29

PLATE 812. STAPELIA MCLOUGHLINII

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1941, in volume 21, pages 1-2

Created: 2025-11-29, modified: 2025-11-29

PLATE 803. STREPTOCARPUS GRANDIS

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1941, in volume 21, pages 1-2

Created: 2025-11-29, modified: 2025-11-29

PLATE 804. STREPTOCARPUS REYNOLDSII

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1941, in volume 21, pages 1-2

Created: 2025-11-29, modified: 2025-11-29

PLATE 801. THUNBERGIA ERECTA

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1941, in volume 21, pages 1-2

Created: 2025-11-29, modified: 2025-11-29

PLATE 847. ACROCEPHALUS CALLIANTHUS

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1942, in volume 22, pages 1-2

Created: 2025-11-28, modified: 2025-11-29

PLATE 861. CHLOROPHYTUM LONGIPEDUNCULATUM

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1942, in volume 22, pages 1-2

Created: 2025-11-28, modified: 2025-11-29

PLATE 860. ACACIA MELLEI

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1942, in volume 22, pages 1-3

Created: 2025-11-28, modified: 2025-11-29

PLATE 851. ACACIA ROBUSTA

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1942, in volume 22, pages 1-2

Created: 2025-11-28, modified: 2025-11-29

PLATE 880. HAWORTHIA BLACKBURNIAE

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1942, in volume 22, pages 1-2

Created: 2025-11-28, modified: 2025-11-29

PLATE 869. DAIS COTINIFOLIA

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1942, in volume 22, pages 1-2

Created: 2025-11-28, modified: 2025-11-29

PLATE 874. DIERAMA IGNEUM

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1942, in volume 22, pages 1-2

Created: 2025-11-28, modified: 2025-11-29

PLATE 796. ECHINOPS AMPLEXICAULIS

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1940, in volume 20, pages 1-2

Created: 2025-11-29, modified: 2025-11-29

PLATE 790. LOBELIA ROSULATA

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1940, in volume 20, pages 1-2

Created: 2025-11-29, modified: 2025-11-29

PLATE 800. THUNBERGIA GIBSOnII

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1940, in volume 20, pages 1-2

Created: 2025-11-29, modified: 2025-11-29

PLATE 677. STULTITIA PARADOXA

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1937, in volume 17, pages 1-2

Created: 2025-11-30, modified: 2025-11-30

PLATE 836. DIERAMA REYNOLDSII

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1941, in volume 21, pages 1-2

Created: 2025-11-29, modified: 2025-11-29

PLATE 438. TULBAGHIA FRAGRANS

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1931, in volume 11, pages 1-2

Created: 2025-11-30, modified: 2025-11-30

PLATE 954. EUCOMIS HUMILIS

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1944, in volume 24, pages 1-2

Created: 2025-11-25, modified: 2025-11-29

PLATE 955. EUCOMIS VANDERMERWEI

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1944, in volume 24, pages 1-2

Created: 2025-11-25, modified: 2025-11-29

PLATE 927. STAAVIA GLUTINOSA

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1944, in volume 24, pages 1-2

Created: 2025-11-25, modified: 2025-11-29

PLATE 930. BULBINELLA SETOSA

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1944, in volume 24, pages 1-2

Created: 2025-11-25, modified: 2025-11-29

PLATE 818. HAWORTHIA UBOMBOENSIS

Authors: I C Verdoorn

Published in The Flowering Plants of South Africa, in 1941, in volume 21, pages 1-2

Created: 2025-11-29, modified: 2025-11-29