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Acaena inermis

Spineless Acaena · Mountain Bidibid

Family RosaceaeGenus Acaena

A dense low mat of small toothed gray-purple leaflets spilling over rocks in a rock garden
The whole plantGhislain118 (AD) http://www.fleurs-des-montagnes.netCC BY-SA 3.0

About the plant

What it is and where it grows — not part of any germination protocol.

Habit
subshrubPlants of the World Online
Native range
New Zealand North, New Zealand SouthGBIF Backbone Taxonomy

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: Plants of the World Online — Royal Botanic Gardens, Kew; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

  • Inermis means "unarmed", because the seed head of this bidibid has no spines. It was described in 1988, is endemic to New Zealand, and its cultivar 'Purpurea' is widely sold as a ground cover. Wikipedia: Acaena inermis

Protocol

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: dark

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: dark

about 6 months from start to step 3. Germination happens during step 3, in 42 days.

30% germination in 28–42 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Acaena p. 83Public domain
Show the original text
Acaena (Rosaceae). There is much debris in the bur like seed capsules so that estimates of the number of seeds were not always possible. A. inermis germ. 70D-40-70D(30% in 4-6 w) GA-3 had no effect.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Acaena p. 83. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

How each step is done, in Deno’s words, and what Verified and Derived mean.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

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