Plant Image
Flowers


Yavapai County Native & Naturalized Plants

Psilostrophe sparsiflora - greenstem paperflower

Synonyms: Riddellia tagetina var. sparsiflora
Plant Form: Forb or Subshrub

Family: Asteraceae


   
 
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Leaves
Kirsten Phillips @http://swbiodiversity.org, Usage Rights: CC BY-NC (Attribution-Non-Commercial)
Plant
Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Forb Plant Description

Origin: Native   Life Cycle: Biennial or perennial
General Desc: Stems single or clustered at base from branched or unbranched caudex (old part of stem); stems and leaves hairy; basal leaves often laciniate (narrow, irregular lobes); flower heads yellow, showy; rarely flowering first year.
Identification notes: Stems often hairy, greenish, sometimes long, soft, shaggy hairs in axils; basal leaves wither with age, narrow to spatula-like, smooth or lobed margins; stem leaves similar, reduced in size; ray and disc flowers yellow; ray flowers bent downward in fruit.
Height: 6 to 16 inches


Habitat

Habitat Description: Dry mesas and slopes, often in grasslands, pinyon-juniper, open pine forests and higher elevation woodlands.
Plant Communities: Interior Chaparral, Semidesert Grasslands, Pinyon Juniper Woodland, Montane Conifer Forest
Elevation: 4500 - 7500 feet


Flower Characteristics

Color: Yellow     Shape: Regular in elongated clusters     Tubular: N     Flowering Period: May - Nov
Description: Arranged in groups of 3 to 6 in loose clusters; flower head cylindric to bell-shaped, 1/4 inch, ray petals yellow, wider than long, bent backward in fruit, 3-lobed; disc florets 7 to 9 per flower head; bracts loosely woolly in 1 to 2 sub-equal layers.


Leaf and Stem Characteristics

Leaf Color: Green     Leaf Type: Simple     Leaf Shape: Narrow     Leaf Margin: Smooth     Leaf Attachment: Basal and alternate     Leaves Clasp: N
Hairs: Leaves and stems     Spines: N
Leaf Description: Basal leaves narrow on long stalk, to 4 inches long, smooth or occasionally lobed margins, often laciniate (narrow, irregular lobes), loosely hairy, withering with age; stem leaves similar but reduced in size, alternate, stalkless, narrow, less hairy.


Fruit and Seed Characteristics

Fruit Type: Achene
Fruit Notes: Achenes narrow, usually smooth, sometimes gland-dotted; topped with a pappus of unequal narrow scales, these half as long as disc flowers.


  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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