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Montana Field Guide

Montana Field Guides

Ten-petal blazingstar - Mentzelia decapetala


Global Rank: G5
State Rank: S3S4
* (see State Rank Reason below)

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value:

External Links






State Rank Reason (see State Rank above)
Widely, though sporadically distributed across Montana. Usually not abundant where found.
 
General Description
Usually biennial. Stems branched, 40–100 cm. Leaves lanceolate, sessile above, 4–15 cm long, deeply serrate. Flowers white with pectinate bracts adherent to the hypanthium, nocturnal; sepals 2–4 cm long; petals lanceolate, apparently 10 (5 are staminodes), 3–6 cm long. Capsule broadly cylindric, 2–4 cm long; seeds flattened, narrowly winged, horizontal in 3 to 5 columns (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
AB to MB south to NM and TX (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 6

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Sparsely vegetated, often gravelly soil of steep slopes, roadsides; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Ten-petal blazingstar — Mentzelia decapetala.  Montana Field Guide.  .  Retrieved on , from