Download A flora of southern Illinois by Robert H. Mohlenbrock, John W. Voigt PDF

By Robert H. Mohlenbrock, John W. Voigt

This e-book could be of specific curiosity to these inter­ested in utilized fields of biology, reminiscent of conservation, forestry, and wild lifestyles. The southern twelve counties of Illinois, a complete of 4,355 sq. miles, contain the world lined during this e-book. it truly is a space within which either northern and southern plant life specimens abound. a wide selection of plant species develop during this region, and approximately 2 hundred new vegetation now not previously pointed out with this quarter were incorporated within the listings. Especially invaluable to novice botanists, the e-book is a crucial guide in settling on the vegetation that make up the local surroundings of this zone. Seventy-seven illustrations relief in settling on and knowing the plant groups.

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Extra resources for A flora of southern Illinois

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Plants of rocky places; carpels 1 to several or 2 basally fused 68. Saxifragaceae 12. Plants not of rocky places; carpels 5; free-central placentation; ovules numerous. 114. Primulaceae 11. Leaves not usually forming a basal rosette 78. Linaceae 9. Petals 3, 4, or 5, or petals absent 13 13. Petals 3; sepals 5; stamens 3 to 12; ovary 3-carpellate 97. Cistaceae 13. Petals and sepals 4 to 5 or petals or sepals absent 14 14. Petals and sepals 4 to 5 with stamens twice the number of petals, or stamens 6 15 15.

Flowers not in terminal and axillary cymes 23 23. Sepals and petals 4; stamens twice as many as the petals; ovary 4-carpellate. 107. Onagraceae 23. Sepals and petals 2; petals white, notched at apex; stamens 2; fruit obovoid with hooked bristly hairs Circaea in 107. Onagraceae 20. Flowers in flattened heads or flowers in a subglobose or ovoid head 24 24. Flowers in flattened heads; calyx reduced to a pappus; stamens 5 143. Compositae 24. Flowers in subglobose or ovoid heads; calyx not reduced to a pappus; stamens 2 to 4 142.

Callitrichaceae 17. Flowers irregular, white; stamens 4 Bacopa in 130. Scrophulariaceae 15. Leaves alternate, basal, or fascicled on stolons, or uppermost leaves opposite 18 18. Leaves floating on water 19 19. Leaves large, simple, round or oval, petiolate, leathery 20 20. Leaves with a sinus at base 58. Nymphaeaceae 20. Leaves without a sinus at base 57. Nelumbonaceae 19. Leaves smaller, not leathery 21 21. Flowers small, pinkish; nodes swollen, sheathed 44. Polygonaceae 21. Flowers on axillary peduncles, without a perianth; submerged leaves often linear 16.

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