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Tetraneuris acaulis

Stemless Four-nerve Daisy · Stemless Hymenoxys · Butte Marigold

Family AsteraceaeGenus Tetraneuris

A yellow daisy with notched ray petals around a domed orange center, on dry ground among gray twigs.
FlowerNo machine-readable author provided. Curtis Clark assumed (based on copyright claims).CC BY-SA 2.5

About the plant

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

Habit
Perennial, Forb/herbPLANTS Database
Flower
YellowFlora of North America
Native range
Canada, lower 48 statesPLANTS Database

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

Sources: PLANTS Database — USDA NRCS; Flora of North America — Flora of North America Editorial Committee.

Worth knowing

  • Tetraneuris means four nerves, for the four veins on each ray petal. It varies so much that 32 species have been described that are now counted as synonyms of its four varieties. Wikipedia: Tetraneuris acaulis

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around February 1, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C

Germination happens during step 1, in 63 days.

100% germination in 21–63 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Hymenoxys p. 154Public domain
Show the original text
Hymenoxys (Asteraceae). H. acaulis ssp caespitosa germ. 70(100% in 3-5 d) and 40(100% in 3-9 w).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Hymenoxys p. 154. 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.

Protocol 2

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around March 31, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 5 days to germinate.

100% germination in 3–5 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Hymenoxys p. 154Public domain
Show the original text
Hymenoxys (Asteraceae). H. acaulis ssp caespitosa germ. 70(100% in 3-5 d) and 40(100% in 3-9 w).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Hymenoxys p. 154. 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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