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Series 2. Part 1. Choripetalae

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Arizona Flora
This chapter is in the book Arizona Flora
THE FLORA OF ARIZONA 2. SESTJVIUM. SEA-PURSLANE Plants fleshy; leaves opposite, narrow, usually oblanceolate; stipules none; petioles more or less connate at base; perianth 5-lobed, the lobes purplish within, the tube turbinate; stamens numerous, inserted on the perianth tube. 1. Sesuvium verrucosum Raf. (S. sessile Robins.). Maricopa, Pinal, and Yuma counties, 1,500 feet or lower, saline soil, March to November. Arkansas to California, south to tropical America. 3. TRIANTHEMA Plants somewhat fleshy; leaves with stipules, opposite, those of the pair very unequal in size, obovate, cuneate at base; perianth purplish within, the lobes concave, with a hornlike dorsal appendage; stamens 6 to 10; capsule crested. 1. TrianthemaPortulacastrumL. Havasu Canyon (Coconino County), and Greenlee, Maricopa, Pinal, Cochise, and Pima counties, 1,000 to 4,000 feet, June to October. Widely distributed in tropical and subtropical America; Eastern Hemisphere. A common weed in irrigated land in southern Arizona, but easily controlled by cultivation. Locally known as pigweed, a name applied to several unrelated plants. This plant is a host of the beet leaf hopper in Arizona. Series 2. Choripetalae (Families 49 to 101) KEY TO THE FAMILIES1 1. Corolla distinctly irregular (2). 1. Corolla regular or nearly so (11). 2. Leaves compound, rarely reduced to a single leaflet (3). 2. Leaves simple, sometimes palmately lobed or parted (4). 3. Sepals 2; corolla conspicuously spurred, not pealike; leaves decompound, with numerous narrow segments: genus Corydalis 55.Papaveraceae 3. Sepals or calyx lobes more than 2; corolla not or inconspicuously spurred, usually pealike (reduced to 1 petal in Amorpha); leaves variously compound 64. Leguminosae 4. Carpels normally more than 1, distinct, in fruit becoming several-seeded follicles. Leaves palmately cleft to parted; flowers showy, mostly blue or bluish, very irregular, the sepals larger and usually more highly colored than the petals: genera Delphinium, Aconitum 52. Sanunculaceae 4. Carpel solitary or if more than one, then the carpels united to form a single fruit (5). 5. Stamens many more than 12. Plants herbaceous; leaves palmately cleft or parted; flowers large and showy; fruit a large, thick-walled capsule... .89. Cochlospermaceae 5. Stamens not more than 12 (6). 6. Plants large shrubs; flowers appearing before the leaves, somewhat pealike. Leaves entire, round-cordate; fruit a flat 2-valved pod: genus Cercis 64. Leguminosae 6. Plants herbaceous, or low shrubs; flowers appearing with the leaves, not pealike (7). 7. Petals and stamens borne on the throat of the calyx, this gamophyllous, asymmetric, and enlarged in fruit: genus Cuphea 96. Lythraceae 7. Petals and stamens free from the calyx, this of distinct or nearly distinct sepals (8). 8. Stipules present; stamens 5, the anthers connivent or slightly cohering, the filaments distinct or almost none 91. Violaceae 8. Stipules none or reduced to glands; stamens more or fewer than 5, the anthers distinct, the filaments more or less united (9). 9. Petals 5, two of them fleshy and glandlike; fruit spiny, indehiscent: genus Krameria 64. Leguminosae 'Two families that belong properly to series Sympetalae are included in this key because some of their members have the petals distinct.
© 2020 University of California Press, Berkeley

THE FLORA OF ARIZONA 2. SESTJVIUM. SEA-PURSLANE Plants fleshy; leaves opposite, narrow, usually oblanceolate; stipules none; petioles more or less connate at base; perianth 5-lobed, the lobes purplish within, the tube turbinate; stamens numerous, inserted on the perianth tube. 1. Sesuvium verrucosum Raf. (S. sessile Robins.). Maricopa, Pinal, and Yuma counties, 1,500 feet or lower, saline soil, March to November. Arkansas to California, south to tropical America. 3. TRIANTHEMA Plants somewhat fleshy; leaves with stipules, opposite, those of the pair very unequal in size, obovate, cuneate at base; perianth purplish within, the lobes concave, with a hornlike dorsal appendage; stamens 6 to 10; capsule crested. 1. TrianthemaPortulacastrumL. Havasu Canyon (Coconino County), and Greenlee, Maricopa, Pinal, Cochise, and Pima counties, 1,000 to 4,000 feet, June to October. Widely distributed in tropical and subtropical America; Eastern Hemisphere. A common weed in irrigated land in southern Arizona, but easily controlled by cultivation. Locally known as pigweed, a name applied to several unrelated plants. This plant is a host of the beet leaf hopper in Arizona. Series 2. Choripetalae (Families 49 to 101) KEY TO THE FAMILIES1 1. Corolla distinctly irregular (2). 1. Corolla regular or nearly so (11). 2. Leaves compound, rarely reduced to a single leaflet (3). 2. Leaves simple, sometimes palmately lobed or parted (4). 3. Sepals 2; corolla conspicuously spurred, not pealike; leaves decompound, with numerous narrow segments: genus Corydalis 55.Papaveraceae 3. Sepals or calyx lobes more than 2; corolla not or inconspicuously spurred, usually pealike (reduced to 1 petal in Amorpha); leaves variously compound 64. Leguminosae 4. Carpels normally more than 1, distinct, in fruit becoming several-seeded follicles. Leaves palmately cleft to parted; flowers showy, mostly blue or bluish, very irregular, the sepals larger and usually more highly colored than the petals: genera Delphinium, Aconitum 52. Sanunculaceae 4. Carpel solitary or if more than one, then the carpels united to form a single fruit (5). 5. Stamens many more than 12. Plants herbaceous; leaves palmately cleft or parted; flowers large and showy; fruit a large, thick-walled capsule... .89. Cochlospermaceae 5. Stamens not more than 12 (6). 6. Plants large shrubs; flowers appearing before the leaves, somewhat pealike. Leaves entire, round-cordate; fruit a flat 2-valved pod: genus Cercis 64. Leguminosae 6. Plants herbaceous, or low shrubs; flowers appearing with the leaves, not pealike (7). 7. Petals and stamens borne on the throat of the calyx, this gamophyllous, asymmetric, and enlarged in fruit: genus Cuphea 96. Lythraceae 7. Petals and stamens free from the calyx, this of distinct or nearly distinct sepals (8). 8. Stipules present; stamens 5, the anthers connivent or slightly cohering, the filaments distinct or almost none 91. Violaceae 8. Stipules none or reduced to glands; stamens more or fewer than 5, the anthers distinct, the filaments more or less united (9). 9. Petals 5, two of them fleshy and glandlike; fruit spiny, indehiscent: genus Krameria 64. Leguminosae 'Two families that belong properly to series Sympetalae are included in this key because some of their members have the petals distinct.
© 2020 University of California Press, Berkeley

Chapters in this book

  1. Frontmatter I
  2. Preface V
  3. Contents VII
  4. Introduction: Botanical Exploration 1
  5. Part I. The Physical Background and Vegetation of Arizona
  6. Topography 7
  7. Geology and Soils 10
  8. Climate 11
  9. Vegetation in Relation to Physical Conditions 12
  10. Life Forms 16
  11. Part II. The Flora of Arizona
  12. Plan of the Book 21
  13. Geographic Elements of the Flora 23
  14. Taxonomic Composition of the Flora 26
  15. Key to the Phyla 26
  16. PTERIDOPHYTA 27
  17. SPERMATOPHYTA
  18. Gymnospermae 50
  19. Angiospermae
  20. MONOCOTYLEDONEAE 62
  21. DICOTYLEDONEAE
  22. Series 1. Apetalae 203
  23. Series 2. Part 1. Choripetalae 281
  24. Series 2. Part 2 477
  25. Series 3. Part 1. Sympetalae 626
  26. Series 3. Part 2 799
  27. Literature Consulted 973
  28. Glossary 987
  29. Index of Scientific and Common Names 1007
  30. Supplement 1035
  31. Literature Consulted for Supplement 1077
  32. Index to Supplement 1083
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https://doi.org/10.1525/9780520324244-016

Chapters in this book

  1. Frontmatter I
  2. Preface V
  3. Contents VII
  4. Introduction: Botanical Exploration 1
  5. Part I. The Physical Background and Vegetation of Arizona
  6. Topography 7
  7. Geology and Soils 10
  8. Climate 11
  9. Vegetation in Relation to Physical Conditions 12
  10. Life Forms 16
  11. Part II. The Flora of Arizona
  12. Plan of the Book 21
  13. Geographic Elements of the Flora 23
  14. Taxonomic Composition of the Flora 26
  15. Key to the Phyla 26
  16. PTERIDOPHYTA 27
  17. SPERMATOPHYTA
  18. Gymnospermae 50
  19. Angiospermae
  20. MONOCOTYLEDONEAE 62
  21. DICOTYLEDONEAE
  22. Series 1. Apetalae 203
  23. Series 2. Part 1. Choripetalae 281
  24. Series 2. Part 2 477
  25. Series 3. Part 1. Sympetalae 626
  26. Series 3. Part 2 799
  27. Literature Consulted 973
  28. Glossary 987
  29. Index of Scientific and Common Names 1007
  30. Supplement 1035
  31. Literature Consulted for Supplement 1077
  32. Index to Supplement 1083
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