Huperzia mannii

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Huperzia mannii

Critically Imperiled (NatureServe)
Scientific classification
Kingdom: Plantae
Division: Lycopodiophyta
Class: Lycopodiopsida
Order: Lycopodiales
Family: Huperziaceae
Genus: Huperzia
Species: H. mannii
Binomial name
Huperzia mannii
(Hillebr.) Kartesz & Gandhi

Huperzia mannii is a species of lycopod plant known by the common names Mann's clubmoss and wawae`iole. It is endemic to Hawaii, where there are only six populations remaining.[1] It is a federally listed endangered species of the United States.

This plant is an epiphyte which grows upon other plants, especially koa (Acacia koa), 'olapa (Cheirodendron trigynum), and kawa'u (Ilex anomala).[2] It has a hanging, branching, reddish stem no more than 10 centimetres (3.9 in) long. Each branch has three longitudinal rows of toothlike leaves. When reproducing the plant produces a branching fruiting spike which may be up to 20 centimetres (7.9 in) long.[2]

Today the plant is known from just a few occurrences on the islands of Maui and Hawaii. It is historically known from Kauai, but it may be extirpated there.[1] Threats to its existence include damage to the habitat by feral pigs, cattle, and introduced plant species, and the fact that there are few individuals remaining.[1][2]


  1. ^ a b c "Huperzia mannii". The Nature Conservancy. 
  2. ^ a b c Huperzia mannii. Hawaii's Comprehensive Wildlife Conservation Strategy.

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