Key to Marsilea

View taxon page for Marsilea

(For a list of species in Marsilea, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Distal 

tooth 

1. A small, pointed projection, such as on the margin of a leaf, sepal, or petal. 2. The free tips of otherwise fused structures, such as sepals or petals (somewhat archaic usage); smaller than lobes.

of 

sporangium 

In non-seed plants, a case or sac in which spores are produced, and from which they are released.

case 

obtuse 

Having a short-tapered, blunt tip or base, the sides convex or straight and converging at more than a right angle.

, < 0.4 mm or 0; sporangial stalk nodding, fused to case 0.8–1 mm ..... M. oligospora

1' Distal tooth of sporangium case 

acute 

Having a short-tapered, sharp tip, the sides convex or straight and converging at less than a right angle.

, (0.2)0.4–1.2 mm; sporangial stalk ± 

erect 

Upright; vertically oriented.

, fused to case 1.1–1.7 mm ..... M. vestita subsp. vestita

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