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Families of Angiosperms by Bertel Hansen & Knud Rahn         Search

Hansen, B. & K. Rahn. 1969. Determination of angiosperm families by means of a punched card system. Dansk Botanisk Arkiv 26.


Character List

1: habit [Unordered List]

2: important diagnostics [Unordered List]
    • 1. aquatic plants, leaves floating or submerged   (41 taxa)
    • 2. chlorophyll absent   (14 taxa)
    • 4. milky juice present   (34 taxa)
    • 5. spiny stems or leaves   (89 taxa)
    • 7. cladodes or phyllodes   (15 taxa)
    • 8. cystoliths present   (22 taxa)
3: hairs [Unordered List] 4: leaf: position [Unordered List] 5: leaf: nature [Unordered List] 6: leaf: venation [Unordered List]
    • 1. pinnate or hardly visible in leaves or leaflets.   (369 taxa)
    • 2. invisible or leaves 1-nerved   (29 taxa)
    • 3. longitudinal in leaves or leaflets   (88 taxa)
    • 4. palmate in leaves or leaflets   (78 taxa)
7: margin [Unordered List] 8: leaf: epidermis [Unordered List]
    • 1. epidermis of leaf papillose   (122 taxa)
9: leaf: glands/ligule [Unordered List]
    • 1. with pellucid or glandular dots or lines   (86 taxa)
10: leaf: stipules [Unordered List] 11: inflorescence [Unordered List] 12: flower: sexuality [Unordered List] 13: flower: symmetry [Unordered List] 14: flower: receptacle [Unordered List]
    • 2. enlarged, completely united with the ovary, totally or partially covering it   (126 taxa)
    • 3. enlarged, totally or partially free from the ovary   (81 taxa)
    • 4. enlarged, conical or hemispherical   (42 taxa)
15: flower: disc [Unordered List] 16: flower: perianth number [Ordered List] 17: flower: perianth nature [Unordered List]
    • 1. perianth of similar segments   (190 taxa)
    • 2. perianth of calyx and corolla   (300 taxa)
18: flower: sepal number [Ordered List] 19: flower: sepal position [Unordered List] 20: flower: sepal nature [Unordered List]
    • 1. sepals imbricate or contorted   (284 taxa)
21: flower: petal number [Ordered List] 22: flower: petal position [Unordered List] 23: flower: petal nature [Unordered List] 24: flower: corona [Unordered List]
    • 1. present, or scales in the throat   (22 taxa)
25: stamen: number [Ordered List] 26: stamen: symmetry [Unordered List]
    • 1. the same number as and opposite the petals or alternate with the sepals   (75 taxa)
    • 2. flowers obdiplostemonous   (28 taxa)
27: stamen: anthers [Unordered List] 28: stamen: filaments [Unordered List]
    • 2. inserted on the corolla   (137 taxa)
    • 4. connate into 1 tube or bundle   (121 taxa)
    • 5. connate into separate bundles   (37 taxa)
29: stamen: other characters [Unordered List]
    • 1. anthers with a conspicuous appendage   (53 taxa)
    • 2. pollen coherent into pollinia or wax-like masses   (4 taxa)
30: pistil: gynophore [Unordered List] 31: pistil: style [Unordered List]
    • 1. styles absent, stigmas sessile   (149 taxa)
    • 2. styles more than 1, free   (123 taxa)
    • 3. style 1, or styles more or less connate   (350 taxa)
32: pistil: carpel [Ordered List] 33: pistil: ovary [Ordered List] 34: pistil: ovule [Ordered List] 35: pistil [Unordered List]
    • 1. carpels free from each other or carpel 1   (128 taxa)
    • 2. ovules parietal, carpels connate   (93 taxa)
    • 3. ovules axile, carpels connate   (311 taxa)
    • 4. ovules attached to the central axis or ventrally in apocarpae   (342 taxa)
    • 5. ovules attached to the apex of the ovary   (135 taxa)
    • 6. ovules attached to the base of the ovary   (132 taxa)
36: fruit: type [Unordered List] 37: fruit: seed [Ordered List] 38: seed: aril [Unordered List]
    • 1. arillus or arill-like organs present   (64 taxa)
39: seed: embryo [Unordered List] 40: seed: cotyledons [Unordered List]
    • 1. folded or crumpled   (44 taxa)
41: seed: endosperm [Unordered List]
    • 1. seeds without endosperm   (175 taxa)
    • 3. endosperm ruminate   (25 taxa)
42: distribution [Unordered List]

Groups

  • 1: General
  • 2: Leaves
  • 3: Flowers
  • 4: Stamen
  • 5: Pistil
  • 6: Fruit/Seed

 

Copyright: (c) Christopher A. Meacham, used with permission.
References: Hansen, B. & K. Rahn. 1969. Determination of angiosperm families by means of a punched card system. Dansk Botanisk Arkiv 26.
Acknowledgments: Thanks to Myriam Fica for entering the data.

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