Erodium

and California

This site was created and is maintained by Benjamin Coultrup.

Photos all ©Benjamin Coultrup unless otherwise indicated, 1984-2021.

Home

Erodium

Classification

Species

Clade I, Subclade 1

Subgenus Erodium

 - Section Erodium

 - Section Oxyrynchia

 - stephanianum group

Clade I, Subclade 2

Subgenus Barbata

 - Section  Absinthoidea

Clade II, Subclade 3

 - cygnorum group

Clade II, Subclade 4

 - botrys group

 - Section Cicutaria,

   - Subsection Cicutaria

   - Subsection Acaulia

 - Section Malacoidea

   - Subsection Reichardia

   - Subsection Malacoidea

 - Section Foetida

California

Literature and References

Notes

Erodium stephanianum Willd.


Annual, 20-50(100) cm, possibly over wintering as a rosette; stems numerous, ascending to decumbent villose, axillary stems short, branching.


Leaves: Leaves opposite, ovate to triangular-ovate, pinnatipartite, with 2 almost free basal lobes; pinnae 5-9, lamina narrow linear along the veins, acuminate, sparsely appressed pilose but rather grey colour; leaf blade 4-7 cm long, petioles more densely covered; stipules 3-8 mm, lanceolate to triangular-lanceolate, acuminate, bipartite to base.


Inflorescence: Umbels axillary on long peduncles (-34cm), of 2-5 flowers, pilose; bracts small, narrow triangular, free; sepals 6-9 mm, elliptic with sparse hairs c2mm long; long mucronate, mucro half the length of sepal, 3-5mm long; petals 5-7mm, equal size, obovate, rounded tip; colour varies – white with pink veins (China, Nepal & Ledebour), pink with deeper veins (Mongolia & Nepal), mauve or pale violet with pink veins, or purple; stamen filaments purple; anthers purple; pollen yellow; stigma green or, in darker flowered plants, purple. Flowers June to August.


Fruit: Beak 3.5-4.5cm long; mericarp 8-11 mm, with a small bare foveole, no furrow; awn with c.3 turns. 2n=16 Guitt.


Distribution: Afghanistan, China, Kashmir, Korea, Kyrgyzstan, Mongolia, Nepal, Pakistan, Russia; meadows, steppes, flood plains, farmlands; 400-4000 m