Achyranthes humilis

(Hillebr.) Di Vincenzo, Berends., Wondafr. & Borsch (2024)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-CoreEudicot Order: Caryophyllales Family: Amaranthaceae Genus: Achyranthes

kulu‘ī [kului]

Description

Key Characters:

Growth Form: Shrubs.

Stems: Stems erect to decumbent, 1–5 m long, openly branched, sparsely pubescent with short appressed hairs.

Roots:

Leaves: Leaves simple. Opposite. Blades ovate to oblong, 3–9 cm long, 2–5 cm wide (juvenile leaves or leaves of young flowering plants narrower than those of mature plants). Apex obtuse to rounded. Base cuneate to truncate. Surfaces moderately pubescent with short appressed hairs, becoming glabrate with age. Margins entire. Pinnately veined. Petioles 4–8 mm long. Stipules absent.

Flowers: Flowers in slender spikes 3–14 cm long, ca. 4 mm or less in diameter; Peduncles 0.5–1.5 cm long. Flowers bisexual (perfect), broadly ovoid, actinomorphic, Each flower subtended by a persistent bract and 2 bracteoles. Calyx of 4 sepals, equal, ovate, ca. 3 mm long, pubescent with short appressed to spreading hairs. Sepals subtended by a very broadly ovate, scarious bract ca. 1 mm long, ca. 1.5–2 mm wide, persistent on the rachis, bracteoles cordate to ovate, keeled, ca. 1 mm long, deciduous with the calyx and fruit. Corolla (petals) absent. Stamens 4, connate at base; anthers dithecal. Ovary superior, 2–3(4)-carpellate, the carpels connate to form a compound, 1-celled ovary; ovule placentation basal, free-central, or rarely apical; style 1, often lobed.

Fruit: Fruit ca. 2 mm long; enclosed by the calyx. Seeds 1 per fruit; the surface usually lustrous; endosperm essentially absent.

Ploidy:

Habitat: Rare in open; remnant dry forest; sometimes on cliff faces; in gulches; or on steep slopes.

Elevation Range: 300–700 m.

Historical Distribution

Uses and Culture

USES

PROPAGATION/CULTIVATION

  • /Spores The seeds of Nototrichium humile are very small, about 1/16 of an inch long, and lens shaped. Nototrichium humile can be grown from seed, but the resulting plants are variable in habit and leaf size. (Koob 2000; Wagner 1990)
  • Nototrichium humile is very easy to grow from cuttings. Use tip cuttings and remove the lower leaves before inserting the cuttings in the planting medium. Almost any sterile medium that will hold water (such as perlite, vermiculite, or potting soil) will work for this easy to root plant. No rooting hormone is required. Roots for quickly and cuttings are well rooted in less than 4 weeks. (Koob 2000) [Data from Herring, E. C., & Criley, R. A. (2003). The Hawaiian Native Plant Propagation Web Site: Developing a Webbased Information Resource. HortTechnology, 13(3), 545-548. https://www.ctahr.hawaii.edu/hawnprop/]

Natural History

Statewide Status

Endemic

Island Status

Kaua'i Only found in cultivation
O'ahu Endemic
Maui Endemic

Dispersal Agents


Pollinators

Bibliography

Name Published In: Taxon 73: [19 of 35] (2024)

Other References

Wagner et al. 1990:193 (O, EM [as Nototrichium humile]); Di Vincenzo et al. 2024 (COMBNOV, Syn. N. humile = A. humilis); Hank Oppenheimer pers. obs./Stemmermann 1228B BISH (M†, 1976)

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date