Lycopsids Flashcards
What are Lycopsids?
Most primative extant vascular plants
What type of leaves do they have?
Generally microphylls
Where are the sporangia located?
Near the axis of the microphylls, often aggregated into cones
Which phase of life is dominant?
Sporophyte
Which methods of reproduction do they use?
Hetero and homosporous
What are the different families?
Lycopodium, Phylloglossum, Selaginella, Isoetes
How many species of Lycopodium are there?
200
What are the features of Lycopodium?
Elingulate leaves, homosporous, Gametophytes may be subterranean
How many species of Phylloglossum are there?
one in Australia
What are the features of Selaginella?
Lingulate microphylls,have strobili, heterosporous
How many species of Selaginella are there?
700, mostly tropical
What are the features of Isoetes?
Lingulate microphylls, heterosporous, mostly aquatic. at first leaves bear megasporangia, then later in life bear microsporangia
