E-Flora BC: Electronic Atlas of the Flora of British Columbia

Daucus pusillus Michx.
American wild carrot
Apiaceae

Introduction to Vascular Plants

Distribution of Daucus pusillus
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Species Information

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Illustration Source: The Illustrated Flora of British Columbia

General:
Slender annual herb from a slender taproot; stems single, 50-70 (90) cm tall, stiff-hairy throughout.

Leaves:
Basal and stem leaves pinnately dissected with small narrow ultimate segments, leaf blades 3-10 cm long.

Flowers:
Inflorescence of numerous, compound umbels with compact heads; flowers white, small; involucral bracts pinnatifid into linear segments without paper-like margins.

Fruits:
Oblong, 3-5 mm long, 2 mm wide, usually broadest below the middle, ribbed and armed with barbed prickles along alternate ribs.

Source: The Illustrated Flora of British Columbia

Key to the Species and Taxonomic Notes

1. Involucral bracts with paper-like edges below; leaf segments threadlike to awl-shaped; plants introduced, coarse biennials..................... D. carota

1. Involucral bracts without paper-like edges below; leaf segments linear or lanceolate, scarcely elongate; plants native, slender annuals..................... D. pusillus

Source: Illustrated Flora of British Columbia

Habitat / Range

Dry rock outcrops and grassy sites in the lowland zone; locally common on SE Vancouver Island, the Gulf Islands and adjacent mainland; S to MO, SC, FL and MX.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Daucus pusillus

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information	Value / Class
Site Information	Minimum	Average	Maximum
Elevation (metres)	122	216	285
Slope Gradient (%)	1	33	60
Aspect (degrees) [0 - N; 90 - E; 180 - S; 270 - W]	60	182	360
Soil Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric]	0	1	2
Modal Nutrient Regime Class
Number of field plots species was recorded in:	32
Modal BEC Zone Class	CDF
All BEC Zones (# of stations/zone) species was recorded in:	CDF(4)
Source: Klinkenberg 2020

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Status Information

Origin Status	Provincial Status	BC List (Red Blue List)	COSEWIC
Native	S5	Yellow	Not Listed

BC Ministry of Environment: BC Species and Ecosystems Explorer, the authoritative source for conservation information in British Columbia.

Taxonomic and Nomenclatural Links

Genetic information (NCBI Taxonomy Database)
International Plant Names Index
Taxonomic Information from the World Flora Online
Integrated Taxonomic Information System

Additional Range and Status Information Links

Burke Museum of Natural History (Washington State records)
CalFlora
Consortium of Pacific Northwest Herbaria records
Jepson Interchange
NatureServe Explorer
USDA

Additional Photo Sources

UBC Herbarium Scanned Collection Record
Images From CalPhoto
UT Austin's Native Plant Database
Google Image Search
Flickr Image Search

General References

Google Scholar Search
Family References
General Botanical References for BC

Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2020. E-Flora BC: Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. [Accessed: 2024-09-20 3:51:44 AM ]

Disclaimer: The information contained in the E-Flora atlas pages is derived from expert sources as cited in each section. This information is scientifically based. E-Flora also acts as a portal to other sites via deep links. As always, users should refer to the original sources for complete information. E-Flora BC is not responsible for the accuracy or completeness of the original information.