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Salix petrophila Rydb.
ALPINE WILLOW
Life   Plantae   Dicotyledoneae   Salicaceae   Salix


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You are here: Home / Plant Profile

Salix petrophila Rydb.
alpine willow

Image of Salix petrophila

General Information
Symbol: SAPE18
Group: Dicot
Family: Salicaceae
Duration: Perennial
Growth Habit : Shrub
Native Status : CAN   N
L48   N
Data Source and Documentation
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Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   

Images

click on a thumbnail to view an image, or see all the Salix thumbnails at the Plants Gallery

©Al Schneider. Southwest Colorado Wildflowers . United States, CO, NM, AZ, UT, Four Corners vicinity, within 150 miles of the corners. Usage Requirements .

©Al Schneider. Southwest Colorado Wildflowers . United States, CO, NM, AZ, UT, Four Corners vicinity, within 150 miles of the corners. Usage Requirements .

slideshow

Synonyms

Symbol Scientific Name
SAARP Salix arctica Pall. ssp. petraea (Andersson) Á. Löve & D. Löve & Kapoor
SAARC2 Salix arctica Pall. var. caespitosa (Kennedy) L. Kelso
SAARG Salix arctica Pall. var. graminifolia (E.H. Kelso) L. Kelso
SAARP5 Salix arctica Pall. var. petraea (Andersson) Bebb
SAARP4 Salix arctica Pall. var. petrophila (Rydb.) L. Kelso
SABRP4 Salix brownei (Andersson) Bebb var. petraea
SACA30 Salix caespitosa Kennedy
SAPEC Salix petrophila Rydb. var. caespitosa (Kennedy) C.K. Schneid.

Classification

Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Dilleniidae
Order Salicales
Family Salicaceae – Willow family
Genus Salix L. – willow
Species Salix petrophila Rydb. – alpine willow

Subordinate Taxa

This plant has no children

Legal Status

Wetland Status

Interpreting Wetland Status

Related Links

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ARS Germplasm Resources Information Network (SAPE18)
CalPhotos (SAPE18)
Integrated Taxonomic Information System (SAARC2)
Integrated Taxonomic Information System (SAARG)
Integrated Taxonomic Information System (SAARP)
Integrated Taxonomic Information System (SAARP4)
Integrated Taxonomic Information System (SAARP5)
Integrated Taxonomic Information System (SABRP4)
Integrated Taxonomic Information System (SACA30)
Integrated Taxonomic Information System (SAPE18)
Integrated Taxonomic Information System (SAPEC)
Jepson Interchange (University of California - Berkeley) (SAPE18)

Wildlife

Food

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Cover

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover


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Following modified from Flora of North America
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FNA Vol. 7 Page 63, 79 , 81 , 82 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 7 | Salicaceae | Salix

41. Salix petrophila Rydberg, Bull. New York Bot. Gard. 1: 268. 1899.

Rocky Mountain willow

Salix arctica Pallas var. petraea Andersson in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 16(2): 287. 1868, not S. petraea Andersson 1829; S. arctica subsp. petraea (Andersson) Á. Löve, D. Löve & B. M. Kapoor; S. arctica var. petrophila (Rydberg) Kelso; S. petrophila var. caespitosa (Kennedy) C. K. Schneider

Plants 0.02-0.1 m, forming clones by layering. Stems decumbent or trailing; branches yellow-brown, gray-brown, or red-brown, (often weakly glaucous, dull or slightly glossy), glabrous; branchlets yellow-green or yellow-brown, usually glabrous, sometimes pilose to glabrescent. Leaves: stipules absent or rudimentary; petiole 2-13 mm (longer than subtended bud); largest medial blade usually amphistomatous, very narrowly to broadly elliptic, oblanceolate, or obovate, 19-44 × 7-21 mm, 1.5-4.6 times as long as wide, base cuneate or convex, margins flat, entire, apex acute, acuminate, convex, or rounded, abaxial surface pilose to glabrescent, hairs wavy, adaxial dull or slightly glossy, pilose or sparsely villous to glabrescent; proximal blade margins entire; juvenile blade villous or pilose abaxially, mainly on margin. Catkins: staminate (ca. 50 flowers), 18-32 × 6-13 mm, flowering branchlet 3-13 mm; pistillate moderately densely to loosely flowered, (18-80 flowers), slender or stout, 18-59(-70 in fruit) × 6-15 mm, flowering branchlet 2-40 mm; floral bract tawny or brown, 0.5-3.6 mm, apex acute or rounded, entire or 2-fid, abaxially hairy or ciliate, hairs straight or wavy. Staminate flowers: abaxial nectary 0-0.2 mm, adaxial nectary oblong, narrowly oblong, or square, 0.4-1.2 mm, nectaries distinct; filaments distinct or connate less than 1/2 their lengths; anthers ellipsoid, short-cylindric, or globose, 0.4-0.8 mm. Pistillate flowers: adaxial nectary oblong, square, narrowly oblong, or ovate, 0.5-1.2 mm, equal to or longer than stipe; stipe 0.2-0.8 mm; ovary pyriform or obturbinate, sparsely to densely villous, beak gradually tapering to styles; ovules 6-12 per ovary; styles 0.4-1.6 mm; stigmas flat, abaxially non-papillate with rounded or pointed tip, or broadly to slenderly cylindrical, 0.28-0.36-0.6 mm. Capsules 3.6-5 mm. 2 n = 76.

Flowering Jul-Aug. Alpine snowbeds, meadows, talus slopes and open dry pool beds in spruce-fir forests; 1700-4000 m; Alta., B.C.; Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wash., Wyo.

Salix petrophila is often included in S. arctica (G. W. Argus 1993), but southern cordilleran populations, extending as far north as southern British Columbia and Alberta, seem to be a distinct taxon (Argus 1997). The exact northern limit of this species still needs to be established, but in Alberta it does not seem to extend north of Waterton Lakes National Park, except for a population on springy slopes above Agness Lake, Banff National Park. Suitable alpine habitats between Waterton Lakes and Banff national parks, e.g., Mt. Armstrong, Tornado Mountain, and Crowsnest Pass, should be explored for S. arctica and S. petrophila .

Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Salix+petrophila&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Salix+petrophila&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant

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Number of matches : 56
Query: SELECT * FROM img WHERE ready=1 and taxon like "Salix petrophila%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Salix petrophila
Salix petrophila
Arctic Willow
ID: 6246 3041 2918 0055 [detail]
© 1995 Saint Mary's College of California

Salix petrophila
Salix petrophila
Arctic Willow
ID: 6246 3041 2918 0054 [detail]
© 1995 Saint Mary's College of California

Salix petrophila
Salix petrophila
Alpine Willow
ID: 0000 0000 1202 1049 [detail]
© 1991 Gary A. Monroe

Salix petrophila
Salix petrophila
ID: 0000 0000 1103 0669 [detail]
© 2003 Steve Matson

Salix petrophila
Salix petrophila
ID: 0000 0000 1103 0671 [detail]
© 2003 Steve Matson

Salix petrophila
Salix petrophila
ID: 0000 0000 1103 0672 [detail]
© 2003 Steve Matson

Salix petrophila
Salix petrophila
ID: 0000 0000 1103 0673 [detail]
© 2003 Steve Matson

Salix petrophila
Salix petrophila
Arctic Willow
ID: 6246 3041 2918 0053 [detail]
© 1995 Saint Mary's College of California

Salix petrophila
Salix petrophila
Arctic Willow
ID: 6246 3041 2918 0056 [detail]
© 1995 Saint Mary's College of California

Salix petrophila
Salix petrophila
Alpine Willow
ID: 8253 3202 3491 0010 [detail]
Charles Webber
© 1999 California Academy of Sciences

Salix petrophila
Salix petrophila
Arctic Willow
ID: 6246 3041 2918 0050 [detail]
© 1995 Saint Mary's College of California

Salix petrophila
Salix petrophila
Arctic Willow
ID: 6246 3041 2918 0049 [detail]
© 1995 Saint Mary's College of California

Salix petrophila
Salix petrophila
Arctic Willow
ID: 6246 3041 2918 0051 [detail]
© 1995 Saint Mary's College of California

Salix petrophila
Salix petrophila
ID: 9092 3191 3542 0117 [detail]
Steven Kaune
© 1999 California Academy of Sciences

Salix petrophila
Salix petrophila
Arctic Willow
ID: 6246 3041 2918 0052 [detail]
© 1995 Saint Mary's College of California

Salix petrophila
Salix petrophila
ID: 0000 0000 1103 0670 [detail]
© 2003 Steve Matson

Salix petrophila
Salix petrophila
Alpine Willow
ID: 8253 3202 3490 0128 [detail]
Charles Webber
© 1999 California Academy of Sciences

Salix petrophila
Salix petrophila
Alpine Willow
ID: 8076 3101 3987 0030 [detail]
Charles Webber
© 1999 California Academy of Sciences

Salix petrophila
Salix petrophila
Alpine Willow
ID: 0000 0000 1202 1048 [detail]
© 1991 Gary A. Monroe

Salix petrophila
Salix petrophila
Alpine Willow
ID: 8253 3202 3491 0019 [detail]
Charles Thoreau Townsend
© 1999 California Academy of Sciences

Salix petrophila
Salix petrophila
ID: 0000 0000 1105 0902 [detail]
© 2005 Steve Matson

Salix petrophila
Salix petrophila
ID: 0000 0000 1105 0903 [detail]
© 2005 Steve Matson

Salix petrophila
Salix petrophila
ID: 0000 0000 1105 0904 [detail]
© 2005 Steve Matson

Salix petrophila
Salix petrophila
ID: 0000 0000 1105 0905 [detail]
© 2005 Steve Matson

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos .   


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