Saturday, February 13, 2016

Apocynum androsaemifolium (Spreading Dogbane, Bitter Dogbane)

8/15/11 Onion Valley, Inyo National Forest, Independence Region, Eastern Sierra, 
Inyo National Forest, Inyo County, CA

7/8/16 Lundy Canyon Trail, Inyo National Forest, Eastern Sierra, CA

7/7/07 Leavitt Campground off Hwy. 108 (Sonora Pass Hwy.), Toiyabe National Forest,
Sierra Nevada, Mono County, CA

 7/4/05 Clear Lake Trail from Mill Creek Falls Trail, South Warner Wilderness,
Modoc National Forest, Modoc County, CA

 7/8/00 Onion Valley

 7/6/02 Onion Valley

8/14/11 Lake Sabrina, Inyo National Forest, Bishop Region, Eastern Sierra, Inyo County, CA

7/11/07 Middle Fork of Bishop Creek near Lake Sabrina,
Bishop Region, Eastern Sierra, Inyo National Forest, Inyo County, CA

 7/5/16 Convict Lake, Eastern Sierra, Mono County, CA

7/5/16 Convict Lake, Eastern Sierra, Mono County, CA


COMMON NAME: Spreading Dogbane, Bitter Dogbane

SPECIES: Apocynum androsaemifolium

FAMILY: Apocynaceae (Dogbane Family)


LOCATION: Onion Valley, elevation 9,200,' abundant on gravelly roadside near patch of Wood's Rose (Rosa woodsii) approaching campground & trailheads on left side of road.


Treatment from The Jepson Manual (1993):

Stem diffusely branched

Leaf: petiole << blade; blade 4–6 cm, base generally round or cordate, tip round or obtuse to ± acute

Flower: corolla 4–8 mm, ± bell-shaped

Fruit 7–11 cm, pendent to erect

Ecology: Open slopes, rocky places, with conifers, chaparral

Elevation: 200–2500 m.  

Bioregional distribution: Klamath Ranges, High North Coast Ranges, Inner North Coast Ranges, High Cascade Range, High Sierra Nevada, San Francisco Bay Area, Inner South Coast Ranges, San Bernardino Mountains, San Jacinto Mountains, Modoc Plateau, White and Inyo Mountains 

Distribution outside California: to e N.America, Canada

Flowering time: Jun–Aug

Synonyms: var. glabrum Macoun; A. medium Greene var. floribundum (Greene) Woodson; A. pumilum (A. Gray) Greene 

Horticultural information: DRN: 1, 4, 5, 6, 15, 17 &SHD: 2, 3, 16 &IRR: 7, 14, 18, 20, 21; STBL, INV.

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