Jepson eFlora
Key to families | Table of families and genera

Key to Pelargonium

View taxon page for Pelargonium

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

1. Leaf peltate, glabrous ..... [P. peltatum]

1' Leaf not peltate, glabrous or not

2. Leaf blade ± as long as wide

3. Leaf membranous, hairs 0 or sparse; petals pink-purple ..... [P. zonale]

3' Leaf ± succulent, hairs dense; petals red to white

4. Leaf blade 15–20 cm wide; petals red to white ..... P. ×hortorum

4' Leaf blade generally 4–8 cm wide; petals red ..... P. inquinans

2' Leaf blade longer than wide or wider than long

5. Flower < 10 mm wide; stem slender, < 3 mm diam ..... P. grossularioides

5' Flower 15–40 mm wide; stem stout, > 3 mm diam

6. Inflorescence ± lax; flower 30–40 mm wide; leaf blade abaxially hairier, of different color than adaxially ..... P. panduriforme

6' Inflorescence dense; flower 15–18 mm wide; leaf blade abaxially, adaxially equally hairy, of same color

7. Plant prostrate to sprawling; margins of lower leaves irregularly curled; inflorescence 8–20-flowered ..... [P. capitatum]

7' Plant erect; margins of lower leaves not curled; inflorescence 3–12-flowered ..... [P. vitifolium]


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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