Delphinium cardinale Hook.
Cardinal or Scarlet larkspur

Family:   Ranunculaceae

Habit:  Perennial with deep, thickened roots and erect, woody stems; simple or branched above, 1 to 2 m. tall, with scarlet flowers.

Distribution:  Found in dry openings in coastal sage scrub, chaparral and foothill woods; from Monterey County to San Diego County and Baja California.

Seed unit:  Free seed.

Seed:   Quadrangular with sharp angles, 2 to 3 mm. long, dark, bumpy.

Embryo:  Small basal embryo in fleshy endosperm.

Purity instructions:   Pure seed definition:
AOSA:  PSU #1 Seed, with or without seed coat.  Piece of broken seed, with or without seed coat, larger than one-half the original size.
ISTA:  PSD #10 Seed, with or without testa.  Piece of seed larger than one-half the original size, with or without testa.

Lab Notes:  Germination test can show thermal dormancy at warm temperatures.

Average pure 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).

Range of percent pure seed:   14 to 81%

Range of percent inert:  18 to 85%

Description of inert:   Plant material, stone, broken seed, dead and live insects.

Planting instructions:  400 seeds, T, 28 days @ 15C; for fresh and dormant seed, prechill recommended.

References: (link to main reference page)
Hickman, J.C., Ed.  1993.  p. 918.
Munz, P.A. and D.D. Keck.  1968.  p. 90.
Ransom Seed Laboratory
Rules for Testing Seeds, AOSA


Copyright Ransom Seed Laboratory - All rights reserved