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Species Information

Kingdom: Plantae
  Phylum: Anthophyta
    Class: Dicotyledoneae
      Order: Asterales
        Family: Asteraceae
          Genus: Helianthus
            Species: paradoxus

Puzzle Sunflower - Helianthus paradoxus

Puzzle Sunflower

Image courtesy of New Mexico Rare Plants

421597

Species Extent (New Mexico)

General Description

Annual, 1-2 m tall, branched above, stem glabrous to hispid; leaves opposite below, alternate above, up to 17.5 cm long by 8.5 cm wide, lanceolate with 3 prominent veins, base tapering to a short petiole, margins entire except for a few prominent teeth on larger leaves, surface scabrous; flower heads solitary, terminating branches, 3-5 cm across including ray flowers; ray flowers 12-20, yellow; phyllaries 15-25, 3-4 mm wide, oblong-lanceolate, acuminate, hispid, margins ciliate; pales glabrous at tips; achenes 3-4 mm long, glabrous. Flowers August to October.

Status

Global Rank: G2

State Rank: S2

State Status: E

Federal Status: Listed Threatened [LT]

USFS Status:

BLM Status:

SWAP Status:

NMRP Strategy Status: Strategy Species

Observations in Natural Heritage New Mexico Database

Number of Subpopulations: 13

Number of Mapped Locations: 70

Number of Observations: 113

Observation date range: 09-10-1980 to 10-20-2016

External Links

View More Information about this species at:
  NatureServe Explorer
  New Mexico Rare Plants Website
  Environmental Conservation Online System (ECOS)

Species Related Publications

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