1 / 28

LEC 08

LEC 08. Fern Terms & Ohio Natives. FIELD BOTANY – Lecture 08 Dr. Donald P. Althoff. Common ladyfern. Christmas fern. Ferns: some quick review & facts. About _________ species worldwide They would generally be considered “ ________________ ”

bertille
Télécharger la présentation

LEC 08

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. LEC 08 Fern Terms & Ohio Natives FIELD BOTANY – Lecture 08 Dr. Donald P. Althoff

  2. Common ladyfern Christmas fern

  3. Ferns: some quick review & facts • About _________ species worldwide • They would generally be considered “________________” • They represent the “first” major _____________ _______________….compare this to the mosses

  4. 1 LEAF, BLADE or 2 4 (root, trunk, stock) 3

  5. Basic Morphology - Terms 1 • LEAF = BLADE = = is the flat, green, expanded part leaves/fronds vary in size and shape according to species Some species have different sizes and shapes for fertile and sterile leaves ex. sensitive fern ostrich fern Contains rachis + leaflets (pinnae)

  6. Basic Morphology - Terms 2 • STALK = STIPE = supports the leaf below axis (i.e., first set of leaves/fronds Usually flat or concave in front Usually rounded in the back Young stems typically covered with hairs or scales

  7. Basic Morphology - Terms 3 • ROOTS usual forms are thin, wiry, black, and forking. Shallow. Grow from sides and undersides of rhizome • RHIZOMEthe part of a fern from which the fronds (leaves) and roots grow supports roots below and stalk above 4

  8. 5 Leaflet or Pinna (pinnae = plural) 6 Rachis = axis = midrib

  9. Leaflet Terminology 8 Teeth 6 5 7

  10. Leaflet / Pinna breakdown… 1-leaflet highlighted 1-pinnule/subleaf highlighted 1-lobe highlighted

  11. Leaflet / Pinna breakdown… “cut” (once divided) “cut” (twice divided) “cut” (thrice divided)

  12. Leaf base shapes to base at base at base

  13. Ohio Fern Species (partial listing) • maidenhair fern • lady fern • bulbet bladder fern • hay-scented fern • crested shield fern • giant wood fern • evergreen wood fern • marginal shield fern • ostrich fern • sensitive fern • royal fern • cinnamon fern • Christmas fern Acknowledgement: most fern pictures are by Walter Mura, Ontario

  14. Maidenhair fernAdiantum pedatum Thrice-divided

  15. Lady fern Athyrium filix-femina Thrice-divided

  16. Bulbet bladder fern Cystopteris bulbifera Thrice-divided

  17. Hay-scented fern Dennstaedtia punctilobula Thrice-divided

  18. Crested shield fern Dryopteris cristata Twice-divided

  19. Giant Wood Fern(goldie’s wood fern) Dryopteris goldiana Twice-divided

  20. Intermediate woodfern(Evergreen wood fern)Dryopteris intermedia Thrice-divided

  21. Marginal shield fern(marginal woodfern)Dryopteris marginalis Twice-divided

  22. Sori • A cluster of sporangia borne on the underside of a fern frond

  23. Sporangia = sporophyll • A cluster of sporangia borne on an erect stalk….cut-leaved grapefern

  24. Ostrich fernMatteuccia struthiopteris Twice-divided

  25. Sensitive fernOnoclea sensibilis Once-divided

  26. Royal FernOsmunda regalis Twice-divided

  27. Cinnamon fernOsmunda cinnamomea Twice-divided whitish velvet coating on lower stems and fiddleheads

  28. Christmas fernPolystichum acrostichoides Once-divided

More Related