Plant Image
Flowers


Yavapai County Native & Naturalized Plants

Apocynum androsaemifolium - spreading dogbane

Synonyms: Apocynum ambigens , A. androsaemifolium var. glabrum, A. ancrosaemifolum var. griseum, A. androsaemifolium var. incaum and more See SEINET.
Other Common Names: bitter dogbane, honey bloom
Plant Form: Forb or Subshrub

Family: Apocynaceae


   
 
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Leaves and flowers
Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Plant
Patrick Alexander @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Forb Plant Description

Origin: Native   Life Cycle: Perennial   Similar Species: A. cannabinum and A. sibiricum
General Desc: Erect or ascending stems emerge from horizontal rootstalks, becoming branched, widely loosely spreading, often with a curve at end; flowers open from the top of the cluster down; at the base of the flower there are organs that secrete nectar.
Identification notes: Erect diffuse branched stems without hairs, milky sap (latex); leaves dark green above, whitish, hairy below; flower petals 5, pinkish with red marks, fused most of their length, spread into very short lobes, sometimes bent back at the tips, fragrant.
Height: 8 to 19-1/2 inches


Habitat

Habitat Description: Found in open to rocky sites, often in higher elevation forests.
Plant Communities: Montane Conifer Forest
Elevation: 7000 - 9500 feet


Flower Characteristics

Color: White to pink     Shape: Bell-shaped in round clusters     Tubular: Y     Flowering Period: Jun - Aug
Description: Flowers are grouped in terminal loosely rounded clusters and in the leaf axils; sepals 1/16 to 1/4 inch long; petals to 1/2 inch, broadly bell shaped; with 5 spreading lobes which bend backwards; white to pink with occasional pink or red veins.


Leaf and Stem Characteristics

Leaf Color: Dark green, whitish below     Leaf Type: Simple     Leaf Shape: Other     Leaf Margin: Smooth     Leaf Attachment: Opposite     Leaves Clasp: N
Hairs: Leaves     Spines: N
Leaf Description: Stems smooth, erect to ascending to 20 inches tall; leaves dark green above with few hairs, denser hairs on undersides making them whitish, egg-shaped to oblong or lance shaped, 3/4 to 2-1/2 inches long, 1/2 to 1-1/4 inches wide; short stems or no stems.


Fruit and Seed Characteristics

Fruit Notes: Fruit is a narrow, dry follicle (capsule-like but derived from an ovary with a single female reproductive organ, that splits open on 1 side), 1-1/2 to 6 inches long, pendulous, round in cross section, opens at maturity.
Seed Notes: Seeds are many, brown, 1/6 to 1/8 inch long with a tuft of brown hairs at the tip.



  Arizona Cooperative Extension
Yavapai County
840 Rodeo Dr #C
Prescott, AZ 86305
(928) 445-6590
Version 8.0  
http://cales.arizona.edu/yavapaiplants/SpeciesDetailForb.php  
Last Updated: Dec 13, 2022
Content Questions/Comments: Email Matt Halldorson  
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