BOT 360F - Families of Vascular Plants

Lab 16-Oct-08 - page 1 - page 2

Morphological terminology for "lower" plants

(1) "Pteridophytes"

These sketches also demonstrate good technique not just in the way in which the students captured the likeness of the plant but also in the large size of the original sketches (half to full page, for the most part) and the way in which many structures are labeled (NB corrections added where necessary) so as to enhance the usefulness of the sketches as study aids. Other examples of botanical sketches are these, of Jamaican bryophytes.

Lycophytes

Note how small the leaves of these plants are; they're call microphylls because they contain only a single, unbranched vascular strand that connects them to the vascular system of the stem.

 
Lycopodium sp. Huperzia sp.

Lycopodium sp. collected at Koffler Scientific Reserve by N. Talent.

Image © 2008 F. Y. Cao

Huperzia sp. collected at Koffler Scientific Reserve by N. Talent.

Image © 2008 J. Yukht

Monilophytes

In the Equisetaceae the leaves are highly reduced; this is not the case in most other groups of Monilophytes.

 
Equisetum spp.

Equisetum cf. arvense (left) and E. xnelsonii (right) collected at Wards Island in the habitats indicated.

Image © 2008 F. Y. Cao

 
Equisetum cf. arvense Equisetum cf. arvense

Equisetum cf. arvense collected at Wards Island.

Image © 2008 D. Apong

Equisetum cf. arvense collected at Wards Island.

Image © 2008 J. Yukht


| What are plant families? | How do we distinguish them? | How and why do we study them? | Selected vascular plant families of Ontario | Reading List | Course outline |

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