asterids diversity of wisconsin rosids asterids
TRANSCRIPT
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Diversity of Wisconsin Asterids!
. . . dogwoods, blueberries, and primroses . . . !
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Asterids!Asterids is the second of the two large groups of eudicots; we have just completed the Rosids
Asterids:
Fused petals
Rosids: Separate petals
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Asterids!
(1) fused petals (2) stamens = or less than number of
petals (3) stamens fused to petals
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**Ericaceae - blueberry family!
Worldwide family of subshrubs, shrubs, epiphytes, and small trees. Characteristic of nutrient poor soils; in Wisconsin common in bogs, acidic pine dominated forests, or sandy soils.
Leatherleaf in bog
Ericaceae now includes the totally fungus dependent mycotrophs - non chlorophyllous, all food and water from fungi
Pinesap in pine forest
Symbiotic relationship with mycorrhizal relationship, forming haustoria - root to fungus connection, permits nutrient uptake by plants, carbon uptake by fungus.
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**Ericaceae - blueberry family!
Rhododendron (Ledum) Labrador tea Note revolute leaves Chimaphila
shinleaf
Arctostaphylos bearberry
Plants are generally evergreen, with tough, leathery leaves often revolute or inrolled along edge of leaf, with sunken stomata, and bottom of leaves often covered with protective hairs
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**Ericaceae - blueberry family!
CA (4-5) CO (4-5) A 8-10 G (4-5)
Calyx and corolla are fused, the corolla tube bell or vase shaped - most of our species are 5 merous
Stamens are 2X the number of petals; they often exhibit terminal pores for pollen release - rather than slits - for buzz pollination by bees
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**Ericaceae - blueberry family!
CA (4-5) CO (4-5) A 8-10 G (4-5)
Pistil is superior in most genera, but inferior in blueberries and relatives Fruit a berry or capsule with 4-5 partitions and many seeds
Superior pistil
Inferior pistil
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**Ericaceae - blueberry family!
Andromeda glaucophylla - bog rosemary
Bog rosemary has alternate leaves, revolute, and glaucous (white powdery) on the undersides
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**Ericaceae - blueberry family!
Leatherleaf is often a dominant shrubby member of bogs. Has an extensive stem and root system under the peat. Leaves are glandular dotted. Fruit is a dry berry/capsule.
Chamaedaphne calyculata leatherleaf
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**Ericaceae - blueberry family!
Rhododendron groenlandicum (formerly Ledum ) Labrador tea
Kalmia polifolia - pale laurel 2 bog genera
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**Ericaceae - blueberry family!
V. macrocarpon cranberry
Vaccinium myrtilloides Velvet-leaf blueberry
Vaccinium angustifolium Lowbush blueberry
Blueberries and cranberries are inferior ovaried and berry fruited
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**Ericaceae - blueberry family!
Chimaphila umbellata pipsissewa
Pyrola rotundifolia Round-leaved shinleaf Former Pyrolaceae
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**Ericaceae - blueberry family!
Moneses uniflora One-flowered shinleaf Former Pyrolaceae
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**Ericaceae - blueberry family!
Hypopitys monotropa (Monotropa hypopithys)
pinesap
Monotropa uniflora Indian-pipe
Pterospora andromedea Giant pinedrops
Endangered Mycotrophs from the old family Monotropaceae
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*Primulaceae - primrose family!
Chiefly north temperate family of herbs; 20 genera and about 1000 species. In Wisconsin we have 5 genera and about 15 species. [Note: Michigan Flora separates into Primulaceae + Myrsinaceae]
CA (5) CO (5) A 5 G (5)
5 merous, stamens attached unto petals, and opposite the petals rather than the sepals
Primula (Dodecatheon) - shooting star Lysimachia - loosestrife
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*Primulaceae - primrose family!
Chiefly north temperate family of herbs; 20 genera and about 1000 species. In Wisconsin we have 5 genera and about 15 species. [Note: Michigan Flora separates into Primulaceae + Myrsinaceae]
CA (5) CO (5) A 5 G (5)
Pistil is superior, unilocular, with free-central placentation, fruit a capsule
Primula (Dodecatheon) - shooting star
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*Primulaceae - primrose family!
Primula - the classic study organism for heterostyly by Darwin
Pollen and stigmatic differences in thrum (L) and pin (R) flowers
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*Primulaceae - primrose family!
Primula meadii shooting star
P. amethystinum Western shooting star
Basal leaves
both formerly in Dodecatheon
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*Primulaceae - primrose family!
Lysimachia ciliata Fringed loosestrife
Lysimachia thyrsiflora Tufted loosestrife, Swamp candles
Opposite leaves
Lysimachia nummularia Moneywort,
Creeping Charlie
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*Primulaceae - primrose family!
Trientalis borealis Starflower
Ubiquitous woodland herb with whorl of leaves just below single flower Flower is unusual with 7 merous perianth; note how stamens are lined up with petals rather than sepals
Whorled leaves
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*Sarraceniaceae - pitcher plant family!
Sarracenia purpurea - pitcher plant
Insectivorous family of 3 genera; 1 species in Wisconsin. Pitfall trap (pitcher) from modified leaf; luring color, odor, downward projecting hairs, slippery slope, drowning pool, digesting enzymes
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*Sarraceniaceae - pitcher plant family!
Sarracenia purpurea - pitcher plant
All adaptations to live in nutrient (N) poor habitats; mainly in bogs, but also in fens, lake edges, swales of Great Lakes
Insectivorous family of 3 genera; 1 species in Wisconsin. Pitfall trap (pitcher) from modified leaf; luring color, odor, downward projecting hairs, slippery slope, drowning pool, digesting enzymes
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*Sarraceniaceae - pitcher plant family!
CA 5 CO 5 A ∞ G (5)
Sarracenia purpurea - pitcher plant
5 merous flower; unusual peltate stigma; flower structure ensures outcrossing by bees
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**Polemoniaceae - phlox family!
CA (5) CO (5) A 5 G (3)
5 merous flowers, corolla tube with 5 stamens fused to inside of tube, often at different heights; 3 fused carpels and 3 styles
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**Polemoniaceae - phlox family!
Phlox divaricata - woodland phlox
2 genera in Wisconsin
Phlox has opposite leaves
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**Polemoniaceae - phlox family!
Polemonium reptans - Jacob’s ladder
Alternate leaved spring flowering plant of woodlands and openings [great Botany 401 final exam species!]
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**Polemoniaceae - phlox family!
Polemonium occidentale – western polemonium
Endangered species – Western Disjunct
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*Balsaminaceae - jewelweed family!
Impatiens capensis - orange jewelweed
Small family of juicy-stemmed herbs with spurred sepals; we have two species
Impatiens pallida - yellow jewelweed
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*Balsaminaceae - jewelweed family!
Fruit is explosive to the touch - so also called touch-me-nots
Mature ripe capsule
Capsule sprun open
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**Cornaceae - dogwood family!
• Opposite (except for one) leaved shrubs or subshrubs
• Arcuate (arcing) venation
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**Cornaceae - dogwood family!
CA 4 CO 4 A 4 G (2)
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Flowers small, grouped in tight inflorescences often with 4 inflorescence bracts; 4 merous and with a 2 carpellate inferior ovary; fruit a 1-seeded drupe
bract
Cornus foemina var. racemosa - Gray dogwood
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Common component of shrub carr
Cornus foemina var. racemosa - Gray dogwood
**Cornaceae - dogwood family!
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**Cornaceae - dogwood family!
Cornus sericea (= C. stolonifera) Red-osier Common in wet places, distinctive with red stems
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Low to ground circumboreal subshrub, appears to have a whorl of leaves, and has 4 showy bracts below flowers
Cornus canadensis - bunch berry
**Cornaceae - dogwood family!
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Eastern North American small tree with 4 conspicuous white bracts
Cornus florida - flowering dogwood
**Cornaceae - dogwood family!
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*Gentianaceae - gentian family!
Cosmopolitan family of 80 genera and nearly 900 species. Herbs to small trees (in the tropics) with opposite leaves.
CA (4-5) CO (4-5) A 4-5 G (2)
Flowers 4 or 5 merous; pistil superior of 2 carpels; parietal placentation; fruit capsular
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*Gentianaceae - gentian family!
Gentiana andrewsii - Bottle gentian
Gentiana is 5 merous, with plaits between each petal lobe
Gentiana puberulenta - Prairie gentian
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*Gentianaceae - gentian family!
Gentianopsis virgata - fringed gentian Genus is 4 merous with fringed petals
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*Gentianaceae - gentian family!
Gentianella quinquefolia - stiff gentian
Gentianella is 4-5 merous, without fringe, and without plaits between petal lobes