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

Aphyllon fasciculatum (Nuttall) Torrey & A. Gray
clustered broomrape
Orobanchaceae (Broom-rape family)

Introduction to Vascular Plants

Distribution of Aphyllon fasciculatum
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Species Information

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Illustration Source: The Illustrated Flora of British Columbia

General:
Parasitic herb from a coarse, tuber-like, fleshy root; stems single or clustered, short glandular-hairy, yellowish to purplish, 3-20 cm tall.

Leaves:
Basal leaves lacking; stem leaves scaly-bracteate, alternate, short glandular-hairy.

Flowers:
Inflorescence of loose flat-topped, several to many-flowered clusters; corollas yellow to purple-tinged, 1.5-3 cm long, the lips 4-9 mm long, stalked, the leafless stalks 2-15 cm long; calyces 9-11 mm long, the lobes 3-7 mm long, narrow, acute, equaling or slightly shorter than the tubes; anthers smooth or hairy.

Fruits:
Capsules; seeds numerous, angled, net-veined, less than 0.7 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Parasitic, mainly on Artemisia in dry shrublands in the steppe and lower montane zones; frequent in SC BC; rare northward and eastward; N to YT, E to ON, S to IN, MI, CA and N MX.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Aphyllon fasciculatum

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)	190	974	2013
Slope Gradient (%)	0	35	110
Aspect (degrees) [0 - N; 90 - E; 180 - S; 270 - W]	30	181	345
Soil Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric]	0	2	6
Modal Nutrient Regime Class	C
Number of field plots species was recorded in:	54
Modal BEC Zone Class	IDF
All BEC Zones (# of stations/zone) species was recorded in:	AT(3), BG(16), BWBS(2), CWH(1), ESSF(2), ICH(1), IDF(19), MS(1), PP(1)
Source: Klinkenberg 2020

Status Information

Origin Status	Provincial Status	BC List (Red Blue List)	COSEWIC
Native	S4 (2025)	Yellow	Not Listed

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

Synonyms and Alternate Names

Orobanche fasciculata Nutt.

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

Additional Photo Sources

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: 2026-09-05 4:17:37 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.