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Hymenothrix loomisii - Loomis' thimblehead

Scientific Family
Asteraceae
Plant type
Forbs and Subshrubs
Origin
Native
Lifecycle
Biennial or annual
Similar species
Hymenothrix wrightii
Height
About 3 feet
Riparian
No
Bushy erect plant with stems branching out from the base. The white flower heads are in flat-topped clusters at the ends of the stems. Each flower head consists of many tiny, white, 5-petaled flowers.
Stems rather uniformly leafy to the inflorescence, yellow anthers not exerted from the corolla and overall greenish-yellow cast distinguishes this species from H. wrightii.

Habitat

Mostly in scrub oak, pine communities and rocky places, often with pinyons and junipers.
Plant Community
Pinyon Juniper Woodlands
Montane Conifer Forest
Interior Chaparral
Disturbed Areas
Low elevation
4000
High elevation
8000

Flower Characteristics

Branched, flat-topped flower clusters are found at the top of the stems. What looks like the flower is actually a flower head with 10 to 20 5-petaled florets.
Flower color
Greenish-yellow to white
Flower shape
Daisy or dandelion-like
Tubular
No
First bloom month
July
Last bloom month
October
Flower clusters
Other

Leaf and Stem Characteristics

The leaves are dissected into narrow lobes. They are found at the base of the stems and along the stems, becoming sparse toward the top of the plant.
Leaf type
Simple
Leaf color
Green
Leaf shape
Pinnatifid
Leaf margin
Dissected
Leaf attachment
Alternate
Leaves clasp
No
Leaf hairs
Leaves
Spines
No

Fruit and Seed Characteristics

Club shaped to 3/16 inch with 10-15 bristle-tipped scales at one end.
Fruit type
Achene