Species Detail Forb

Flower head Watson woods - Sue Smith		Yavapai County Native & Naturalized Plants Conium maculatum - poison hemlock Other Common Names: winter fern Plant Form: Forb or Subshrub Family: Apiaceae
Flower head Watson woods - Sue Smith


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Forb Plant Description

Origin: Introduced Life Cycle: Biennial
General Desc: A tall, erect, branching plant with compound finely divided leaves; many small white flowers at the end of short flower stalks which spread from a common point, like an umbrella.
Identification notes: Tall, hairless biennial; stems streaked or spotted with purple blotches; large taproot; pungent odor; leaves pinnately compound, finely divided, and sometimes toothed; flower loose inflorescence of small white flowers in umbels.
Height: To 10 feet

Habitat

Habitat Description: Moist ground near streams, canyons and disturbed areas.
Plant Communities: Riparian, Disturbed Areas
Elevation: 5000 - 7500 feet

Flower Characteristics

Color: White Shape: Regular in round clusters Tubular: N Flowering Period: Jun - Sep
Description: Small white flowers are 5-petaled to 1/8 inch wide. The flowers form small clusters to 1/2 inch wide. The clusters are grouped in compound umbels to 4 inches wide.

Leaf and Stem Characteristics

Leaf Color: Green Leaf Type: Compound Leaf Shape: Pinnatifid Leaf Margin: Lobed Leaf Attachment: Opposite Leaves Clasp: N
Hairs: No Spines: N
Leaf Description: Triangular shaped leaves are fern-like, finely divided, to 2 feet long, sometimes toothed. Purple-spotted grayish-green stems are hollow.

Fruit and Seed Characteristics

Fruit Color: Light brown
Fruit Type: Capsule
Fruit Notes: Ovate, 1/8 inch wide.
Seed Notes: Seed face is grooved.


	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 Legal Disclaimer