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Rhamnus crocea Nutt.
Spiny redberry
 Family:
Rhamnaceae
Habit:
Shrub to 2 meters, sometimes
thorn-tipped.
Distribution:
Found in coastal foothill chaparral and woodlands from
Sonoma
County in Northern California to
Baja
California, Mexico.
Seed unit:
The fruit
is a berrylike drupe containing two to four nutlike seeds
(seed unit is the free seed).
Seed:
5 to 6 mm. long, broadly rounded, triangular with a wedge-shaped
opening on one face. Has a distinct line lengthwise on the flat
face.
Embryo:
Foliar with 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.
Lab notes:
There are often intact seeds with no embryos.
Average
pure seed units per gram: 113 seeds per gram (based on AOSA pure seed units only
from 8 samples received for testing from 1994 to 2002).
Range of
percent pure seed: 96 to 99%
Range of
percent inert: .3 to 3.2%
Description of inert: Plant material, sticks, stone, broken seed.
Planting
instructions: 400 seeds, T, 35 days @ 15°C; for fresh and dormant seed,
GA3 recommended.
References:
(link
to main reference page)
Hickman, J.C., Ed. 1993. p. 940
Ransom Seed Laboratory |
