Keys to Nature
Project
Species of Araceae


© Paul Rothrock - Keys to Nature Project

Title:
Species of Araceae
Version:
25
Author(s):
Jessica Helmbold, Paul Rothrock
Email:
plrothroc@taylor.edu, jh_beagle@hotmail.com,
Description:
Key to species of Araceae including Arisaema dracontium, A. triphyllum, Calla palustris, Peltandra virginica, and Symplocarpus foetidus

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Key Structure:
1. Leaves simple; flowers almost covering spadix - 2
1. Leaves compound; flowers limited to the base of the spadix - 4
2. Spathe green or mottled-brown to purple, convolute, more or less surrounding the spadix; leaf blades hastate or sagittate or, if cordate, then usually much longer than 15 cm - 3
2. Spathe white, open or flat; leaf blades usually cordate and less than 15 cm long - Calla palustris
3. Leaf blades cordate, foul smelling when bruised; spadix globular in shape - Symplocarpus foetidus
3. Leaf blades sagittate or hastate, not malodorous; spadix elongate - Peltandra virginica
4. Leaflets 3; spathe varigated green or maroon; spadix short and blunt, covered by the spathe - Arisaema triphyllum
4. Leaflets 7-15; spathe green; spadix elongate, extended 5-10cm beyond the spathe - Arisaema dracontium

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This page was last modified on: Sun, 29 Mar 2009 20:23:12 -0600.