Gomphrena martiana Gillies ex Moq.

Globe amaranth (en)

Species

Angiosperms > Caryophyllales > Amaranthaceae > Gomphrena

Characteristics

Inflorescences of mostly c. 4 agglomerated clusters forming a head c. 1–2.5 × 0.5–3 cm., frequently broader than long, subtended by 4–5 unequal leaves, on a slender appressed-pilose peduncle c.1.5–5.5 cm. long; bracts small, delicate and hyaline, c.1.5–2 mm. long, deltoid-ovate, shortly aristate; bracteoles concave, c. 4.5–5 mm. long, deltoid-ovate with a short mucro formed by the excurrent nerve, firm and yellowish above, hyaline towards the base, with no dorsal crest.
More
Plants perennial, not cespitose, 0.4-1.5 dm; roots unknown. Stems erect, sparsely pilose. Leaves: petiole 0.4-1.4 cm; blade green, elliptic, 2.3-3.5 × 0.7-1 cm, apex acute, pilose. Inflorescences: heads white, subglobose, 7-11 mm diam., not subtended by 2 leaves; bractlets white, slightly ridged abaxially, not crested. Flowers: tube glabrous; perianth lobes white, lanceolate, 3.2 mm, chartaceous, margins entire, apex acuminate. Utricles not seen. Seeds not seen.
Leaves ovate to oblong-ovate, elliptic or subspathulate, lamina of the larger leaves c. 2–10 × 1–5 cm. (reducing above on both stem and branches), acute to rather blunt at the apex, cuneate or attenuate to a distinct petiole c. 0.5–3.5 cm. long, subglabrous or with scattered hairs on the superior surface, with appressed hairs chiefly along the primary venation below.
Tepals 4–5 mm. long; outer 2 linear-oblong, rather abruptly narrowed to the slightly denticulate, mucronate apex, 1-nerved, the firm central part near the base finely striate and more or less tomentose; inner 3 progressively slightly shorter, narrower and more narrowly pointed; all very indurate at the base in fruit.
Prostrate or sprawling to ascending herb, to at least 50 cm., branched from the base upwards; stem and branches feebly striate, more or less densely furnished in the upper parts with upwardly appressed, rather long white hairs, becoming glabrescent with age.
Staminal tube c. 3 mm. long, divided to c. half way, with only a short blunt tooth or knob on each side of the antheriferous tooth.
Ovary at anthesis c. 1.5 mm. long; style very short, stigmas filiform.
Seeds ellipsoid, c. 1.25 mm. in diam., brown, faintly reticulate.
Capsule shortly ellipsoid, c. 1.5 mm. long.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.05 - 0.15
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity 3-7
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-12

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 6 - 8
Germination temperacture (C°) 21 - 23
Germination luminosity light
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Gomphrena martiana world distribution map, present in Argentina, Bolivia (Plurinational State of), Peru, Paraguay, United States of America, and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:111992-2
WFO ID wfo-0000706109
COL ID 3GTKF
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Gomphrena martiana Gossypianthus martiana Gomphrena argentina Gomphrena martiana var. microcephala Gomphrena martiana var. martiana

Lower taxons

Gomphrena martiana var. glutinosa