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Announcements Final Exam: Monday, May 9 (10:10-12:10) Open lab next week: Tues. & Thurs.

Announcements Final Exam: Monday, May 9 (10:10-12:10) Open lab next week: Tues. & Thurs. 11-1, HS 204. Announcements Final Exam: Monday, May 9 (10:10-12:10) Open lab next week: T/Th 11-1. Robert Wiltzen. Robert Wiltzen. . Graminoid (grass-like) monocots. Poaceae (Grass family).

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Announcements Final Exam: Monday, May 9 (10:10-12:10) Open lab next week: Tues. & Thurs.

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  1. Announcements Final Exam: Monday, May 9 (10:10-12:10) Open lab next week: Tues. & Thurs. 11-1, HS 204

  2. Announcements Final Exam: Monday, May 9 (10:10-12:10) Open lab next week: T/Th 11-1 Robert Wiltzen Robert Wiltzen

  3. Graminoid (grass-like) monocots Poaceae (Grass family) Cyperaceae (Sedge family) Juncaceae (Rush family)

  4. Poaceae -- Grass Family Fruit type caryopsis (grain) similar to achene but ovary wall is fused to seed

  5. Poaceae -- Grass Family In Montana 2nd largest family: 64 genera, 243 species

  6. Agropyron spicatum -- Bluebunch Wheatgrass also called Elymus spicatum and Pseudoroegneria spicata

  7. Agropyron/Elymus -- Wheatgrass • spikelets held close to stem • spikelets spaced out along spike • ligule and auricles obvious • stems clearly jointed

  8. Festuca -- Fescue

  9. Festuca -- Fescue • thread-like (rolled) leaves • loose panicle of spikelets • no auricles • stem joints not apparent

  10. Commelinoid (Graminoid) monocot families Poaceae (Grass family) Cyperaceae (Sedge family) Juncaceae (Rush family)

  11. Cyperaceae - Sedge family Worldwide Widespread, mostly temperate and/or montane ~100 genera, 4500 species Cyperus papyrus

  12. Cyperaceae - Sedge family In Montana 3rd largest family 9 genera, 175 species (>140 in 1 genus - Carex!) Carex utriculata

  13. Cyperaceae - Sedge family Habitat dominant in wetlands, moist alpine areas, and tundra also in drier areas, both woods and grasslands

  14. Cyperaceae - Sedge family Habit perennial herbs w/ corms or other underground storage Eleocharis - Water Chestnut

  15. Cyperaceae - Sedge family Leaves/stems stems triangular => “sedges have edges”

  16. Cyperaceae - Sedge family Leaves leaf sheath closed leaves 3-ranked grass sedge

  17. Cyperaceae - Sedge family Inflorescences various arrangements of spikelets/spikes

  18. Cyperaceae - Sedge family Spikelets/spikes no glumes, often subtended by 1 large (leafy) bract

  19. Cyperaceae - Sedge family Flowers may be perfect (bisexual) or imperfect (unisexual) M F M & F Carex

  20. Cyperaceae - Sedge family Flower => each flower subtended by a bract Perianth lacking or reduced to bristly scales Stamens 3 Gynoecium 1 superior ovary

  21. Cyperaceae - Sedge family Fruit achene

  22. Sedges in Montana Cyperus -- Galingale

  23. Sedges in Montana Eleocharis -- Spikerush

  24. Sedges in Montana Scirpus -- Bulrush

  25. Carex - Sedges • 140 species in Montana!! • vegetative characters typical • diverse inflorescences • flowersunisexual (male OR female)

  26. Carex - Sedges ovary surrounded by a special bract => perigynium

  27. Juncaceae - Rush family Worldwide Widespread, mostly temperate and/or montane ~100 genera, 400 species

  28. Juncaceae - Rush family In Montana 2 genera, ~35 species Habitat Wetlands, often in standing water (Juncus) Moist or dry alpine areas (Luzula and Juncus)

  29. Juncaceae - Rush family Stems round and solid (never hollow and jointed like grasses) Leaves round OR grasslike Luzula

  30. Juncaceae - Rush family Flowers perfect(bisexual), radially symmetric Tepals 6, somewhat showy Stamens 6 Gynoecium 3 fused carpels superior ovary

  31. Juncaceae - Rush family Fruit capsule

  33. Graminoid monocot families  Cyperaceae - sedges triangular solid stems (usually) spikelets florets with 1 bract Juncaceae - rushes round, solid stems flowers with 6 tepals and 6 stamens Poaceae - grasses round, jointed hollow stems spikelets with glumes florets with 2 bracts - lemma & palea (no tepals) 3 stamens, 2 carpels

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