Delphinium cardinale Hook.
Cardinal or Scarlet larkspur
Perennial with deep, thickened roots and erect, woody stems;
simple or branched above, 1 to 2 m. tall, with scarlet flowers.
Found in dry openings in coastal sage scrub, chaparral and
foothill woods; from Monterey County to San Diego County and
Quadrangular with sharp angles, 2 to 3 mm. long, dark, bumpy.
Small basal embryo in fleshy endosperm.
Pure seed definition:
PSU #1 – Seed, with or without seed coat. Piece of broken
seed, with or without seed coat, larger than one-half the
ISTA: PSD #10 – Seed, with or without testa. Piece of seed
larger than one-half the original size, with or without testa.
Germination test can show thermal dormancy at warm temperatures.
seed units per gram: 806 seeds per gram (based on AOSA pure seed units only from 6 samples
received for testing from 1993 to 2004).
percent pure seed:
14 to 81%
18 to 85%
Plant material, stone, broken seed, dead and live insects.
400 seeds, T, 28 days @ 15°C; for fresh and dormant seed,
to main reference page)
J.C., Ed. 1993. p. 918.
Munz, P.A. and D.D. Keck. 1968. p. 90.
Ransom Seed Laboratory
Rules for Testing Seeds, AOSA