Gary Fewless
Key to Selaginella
| 1. Sterile leaves four ranked and of two types,
with larger leaves on two opposing sides of the stem and smaller leaves
on the other 2 sides; larger leaves less than 2 mm long, bright, light
green; usually in moist, sunny and often calcareous sites; spores borne
in flattened strobili near the tip of the stems, each strobilus not much
different from the rest of the stem. |
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| 1. Sterile leaves spirally arranged and of only one type; larger leaves longer than 2 mm, color and habitats as described below; strobili either 4- angled (squarish) or round in cross-section. | 2 |
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