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Published In: Prodrome des Cinquième et Sixième Familles de l'Aethéogamie 101. 1805. (10 Jan 1805) (Prodr. Aethéogam.) Name publication detail
 

Project Name Data (Last Modified On 7/9/2009)
Acceptance : Accepted
Project Data     (Last Modified On 8/5/2009)

 

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1. Selaginella P. Beauv. (spikemoss)

Plants perennial, heterosporous. Stems mostly prostrate (erect or pendant elsewhere), the branch tips somewhat ascending in some species, forming loose to dense mats. Leaves scalelike, with a small, scaly appendage near the base of the upper surface. Sporangia mostly ovoid occurring singly on the upper side of the bases of leaves, these 4-ranked in dense strobili at the branch tips. Megasporangia with (1, 2) 4 trilete megaspores, each 0.2–1.0 mm in diameter, variously ornamented. Microsporangia with several hundred trilete microspores, each 18–60 mm in diameter, papillose to spiny. Gametophytes endosporic within the megaspore walls. About 700 species, worldwide.

 

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1.Leaves spirally alternate along the stems, all similar in size and shape
Selaginella rupestris
1.Leaves in 4 ranks along the stems, 2 spreading, lateral ranks and 2 appressed ranks on the upper surface
2.Appressed leaves of the upper stem surface acute to slightly attenuate, the midvein not extending to the tip
Selaginella apoda
2.Appressed leaves of the upper stem surface abruptly long-attenuate, the midvein extending nearly to the tip
Selaginella eclipes
 
 
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