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Index / Search / Lomatium macrocarpum

§1 Plant — species · Apiaceae

Lomatium macrocarpum (Nutt. ex Torr. & A. Gray) J.M. Coult. & Rose

vernacular bigseed biscuitroot

USDA
LOMA3
GBIF
3034329
Rank
species
bigseed biscuitroot (Lomatium macrocarpum)
Platephotograph · Matt LavinCC BY-SA source · iNaturalist ↗

§2Habit & range

Habit and range

Growth habit
Forb/herb
Duration
Perennial
Group
Dicot
Family
Apiaceae Lindl.
Genus
Lomatium
§2a

Native status, by region

  • CAN Canada Native
  • L48 Lower 48 States Native

§3Cultivation specs · USDA

Recorded by the USDA Plant Materials Program.

§3a

Tolerances

Drought
High
Shade
High
Moisture use
Low
Fire
Medium
Salinity
Low
Anaerobic
None
CaCO₃
Medium
Hedging
None
§3b

Climate & soil

Cold tolerance
-28 °F minimum
Frost-free days
105 min.
Precipitation
8–16 in/yr
pH range
6–8.5
Root depth
10 in min.
Fertility need
Low
Soil texture
coarse, medium
§3c

Form & growth

Growth form
Single Crown
Growth rate
Moderate
Lifespan
Short
Mature height
0.5 ft
Foliage texture
Fine
Foliage colour
Gray-Green
Porosity (summer)
Porous
Porosity (winter)
Porous
Flower colour
White
Fruit colour
Brown
Fire resistant
No
N fixation
None
Toxicity
None
§3d

Reproduction

Bloom period
Early Spring
Seed abundance
Medium
Seed begins
Spring
Seed ends
Spring
Spread rate
Slow
Stratify
No
Seeds / lb
100,000
Propagation
seed, tubers
§3e

Use & availability

Commercial availability
Contracting Only
Nursery stock
No
Browse palatability
Low
Graze palatability
Low
Palatable, human
Yes
Protein potential
Low
Lumber
No
Christmas tree
No

§4Montana distribution

Recorded in 19 of 56 Montana counties.

§5Sources & provenance

USDA PLANTS

Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.

plants.usda.gov/LOMA3 ↗

GBIF Backbone

Canonical taxonomic identity, synonym resolution, cross-refs. CC0.

gbif.org/species/3034329 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-25

fetched 2026-05-25T16:28:53Z