Plant Image
Flowers


Yavapai County Native & Naturalized Plants

Pectis cylindrica - Sonoran chinchweed

Synonyms: Pectis postrata var. cylindrica
Plant Form: Forb or Subshrub

Family: Asteraceae


   
 
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Flowerheads and leaves
Sue Carnahan @http://swbiodiversity.org, Usage Rights: CC BY-NC (Attribution-Non-Commercial)
Plant
Sue Carnahan @http://swbiodiversity.org, Usage Rights: CC BY-NC (Attribution-Non-Commercial)
Forb Plant Description

Origin: Native   Life Cycle: Annual   Similar Species: Pectis prostrata
General Desc: Diffused, much-branched, stems marked by fine lines or grooves, usually very hairy, unscented; leaves narrow, to 1/2 inch long, can be fleshy, dotted by small glands; yellow flower heads usually solitary in leaf axils, in rounded clusters at ends of stem.
Identification notes: Trailing stems with leafy flower clusters; leaves, flowers, and stems gland-dotted; leaves bluish-green, narrow; flower heads have 3 bracts in a single series; disc flowers 3 to 14, ray 3 to 4; achenes topped with scales, sometimes 1 or more bristles.
Height: To 8 inches


Habitat

Habitat Description: Sandy or gravelly soils on plains and mesas, in deserts, oak-juniper woodlands, grasslands, wash channels, mud flats, lawns, and roadsides.
Plant Communities: Desert Scrub, Interior Chaparral, Semidesert Grasslands, Pinyon Juniper Woodland, Riparian, Disturbed Areas
Elevation: 1500 - 5000 feet


Flower Characteristics

Color: Yellow     Shape: Daisy or dandelion-like in round clusters     Tubular: N     Flowering Period: May - Sep
Description: Flower heads <1/8 inch, usually in leaf axils and solitary, in rounded clusters towards end of stems; ray flowers 3 to 4, 3 common, barely surpass phyllaries (bracts), phyllaries fall as a unit, dotted with scattered, glands; disc flowers 3 to 14.


Leaf and Stem Characteristics

Leaf Color: Bluish-green     Leaf Type: Simple     Leaf Shape: Narrow     Leaf Margin: Other     Leaf Attachment: Opposite     Leaves Clasp: N
Hairs: No     Spines: N
Leaf Description: Narrow to lance-like, narrowest end at attachment site, to 8 inches long, <1/8 inch wide, gland-dotted on lower surface, margins with 2 to 5 pairs of short bristles.


Fruit and Seed Characteristics

Fruit Color: Black   
Fruit Type: Achene
Fruit Notes: Fine silvery hairs; achenes (1-seeded dried fruit that does not split open) of ray flowers have 2 scales; disc flower achenes 5 scales.


  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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