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

Orobanche uniflora L.
naked broomrape; oneflowered broomrape
Orobanchaceae (Broom-rape Family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #6625)

E-Flora BC Static Map
Distribution of Orobanche uniflora
Click here to view the full interactive map and legend
Details about map content are available here

Species Information

Click on the image below to view an expanded illustration for this species.



General:
Parasitic herb from a coarse, tuber-like, fleshy root; stems single or clustered, usually smooth except finely glandular-hairy above, 5-15 cm tall.
Leaves:
Basal leaves lacking; stem leaves scaly-bracteate, alternate, lance shaped, smooth.
Flowers:
Inflorescence of single flowers, 1-3 per plant; corollas purplish, sometimes yellowish, 1.5-3.5 cm long, the lips similar to the other lobes, finely fringed, stalked, the leafless stalks 3-12 cm long; calyces 4-12 mm long, the unequal, narrow lobes fringed; 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 on Sedum, Saxifragaceae, Asteraceae and others; moist to dry meadows and forest openings in the lowland, steppe and montane zones; common on SE Vancouver Island and Gulf Islands, infrequent eastward in S BC; E to NF and S to FL, TX and CA.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Orobanche uniflora

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

Minimum

Average

Maximum

Elevation (metres) 31 857 1780
Slope Gradient (%) 0 36 80
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
50 216 340
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 1 5
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
17
Modal BEC Zone Class
ICH
All BEC Zones (# of stations/zone) species was recorded in: BG(1), CDF(2), CWH(2), ESSF(2), ICH(4), IDF(2), MS(3), PP(1)

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.

Synonyms and Alternate Names

Aphyllon uniflorum (L.) Torr. & A. Gray
Orobanche porphyrantha G. Beck
Orobanche purpurea Jacq.
Orobanche sedii (Suksd.) Fech.
Orobanche terrae-novae Fern.
Orobanche uniflora subsp. occidentalis (Greene) Abrams ex Ferris
Orobanche uniflora var. minuta (Suksd.) G. Beck
Orobanche uniflora var. occidentalis (Greene) Roy L. Taylor & MacBryde
Orobanche uniflora var. purpurea (A. Heller) Achey
Orobanche uniflora var. sedii (Suksdorf) Achey
Orobanche uniflora var. terrae-novae (Fern.) Munz
Orobanche uniflora var. typica Achey
Thalesia uniflora (L.) Britt.

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References