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

Rank Metadata
State Rank: S2 Rank Changed: 04/08/2015
Rank Reviewed: 04/08/2015
Reason: Based on narrow habitat specificity and threats to the habitat.
 
Ecological Factors
Specificity: Very narrow. Specialist or community with key requirements scarce. Range Extent: N/A
Occurences: 6 - 20 Population Size: 10,000 - 100,000 individuals
Area of Occupancy: 29 grid cell occupied based on current EO info Threat Summary: N/A

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: 17

Number of Mapped Locations: 383

Number of Observations: 439

Observation date range: 09-10-1980 to 10-11-2024

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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