RARE PLANTS OF THE SOUTHERN INTERIOR

The Okanagan and Similkameen valleys are home to one of the most unique, endangered and biodiverse ecosystems in Canada. Biodiversity is the variety of life and loss of biodiversity can have lasting effects including fewer new medicines, greater vulnerability to natural disasters and greater effects from climate change. Rare plants have become threatened or endangered in most cases due to urban development and agricultural land use.

HOW CAN YOU HELP?

  • Learn how to identify rare plants in your communities and report them to info@osstewardship.ca

  • Keep areas free from competing invasive plants

  • Avoid use of motorized vehicles in ecologically sensitive areas

  • Exclude livestock from sensitive areas and limit their access to riparian areas with a nose-in where possible

  • Become a steward of your rare and unique habitats! Find out how here

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Lyall’s Mariposa Lily

 

White to purplish-tinged petals with fringed margin

 

Found in high elevation, sagebrush grasslands west of Osoyoos in BC

Stoloniferous Pussytoes

 

Low-lying plant with woolly leaves and brownish flowers

 

Found in sandy, eroded slopes south-west of Princeton

Dwarf Woolly-heads

 

Hairy flower heads located in the forks of branches with short, opposite leaves

 

Found in wet, clay soils along shorelines of south-west Princeton

​Showy Phlox

 

Long, narrow leaves, white to pinkish flowers with five petals

 

Plant is covered in fine hairs

 

Found in very hot, dry sagebrush and open pine forests south of Summerland.

Nugget Moss

 

Small moss, less than 2mm tall; leaves are light green, to golden-green

 

Extremely rare, and found only at one site in Penticton and one in Kamloops at undisturbed sites in clay-rich soil

Branched Phacelia

 

Lobed leaves with purple, white or pink petals from a terminal cluster

 

Found in dry, rocky slopes near Mount Kruger in Osoyoos

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Rusty Cord Moss

 

Small, light–to medium green moss, measuring up to 3mm in height

 

Grows on a small strip of shorelines of seasonally wet, alkaline wetlands throughout the southern Okanagan and Similkameen valleys, and northeast of Kamloops

Toothcup

Smooth upright plant growing from 5-15 cm with oblong leaves and groups of pinkish to white flowers in leave axis

 

Found in sparsely vegetated, fine –textured soils on flats alongside ponds that dry out

Slender Collomia

 

Up to 15cm freely branched stem with alternate, elongated leaves and pinkish to white flowers growing singly or in pairs

 

Found on eroded, steep, southeast-facing slopes in south-west Princeton

Photo by Nolan Exe via inaturalist.org (CC BY-NC 4.0)

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Grand Coulee Owl-clover

 

Narrow, alternating leaves; multiple stalks from a singular base with a yellow terminal flower-head

 

Found in extremely dry, open sagebrush communities in Osoyoos

Scarlet Ammannia

 

Oval, opposite leaves with 3 or 5 pink to purple flower heads located above leaves

 

Only known to exist on the shorelines of Osoyoos Lake

Short-rayed Alkali Aster

 

Leaves are outlined with fine hairs; flowers are pink, purple or white

 

Found on sandy shorelines of lakes throughout the Okanagan Valley

 

Beach management and tidying is a threat to this species.

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RESOURCES

RARE PLANTS PDF
SAGEBRUSH NURSERY
OKANAGAN XERISCAPE
INVASIVE SPECIES
ATTRACTING NATIVE POLLINATORS
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FUNDING SUPPORT FOR STEWARDSHIP PROJECTS PROVIDED BY >

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ACKNOWLEDGEMENT >

We acknowledge that our initiatives take place primarily on the traditional, unceded territories of the Syilx/Okanagan people.

CONTACT >

M: #6 - 477 Martin St, Penticton, BC, V2A 5L2

P: 250-770-1467

E: info[@]osstewardship.ca

Reg # 84539 8775 RR0001