Laurembergia tetrandra Kanitz

Species

Angiosperms > Saxifragales > Haloragaceae > Laurembergia

Characteristics

Suffrutescent semi-decumbent or ± erect herb 10–20 cm. tall, sometimes forming mats; stems often reddish, glabrescent to entirely and densely pubescent-villous.. Leaves opposite or alternate, sessile or shortly petiolate, slightly fleshy; blades linear, linear-oblong or narrowly ovate, elliptic or obovate, 0.5–1.5 cm. long, 0.5–7 mm. wide, rounded at the apex, cuneate at the base, entire or slightly to distinctly 1–4-toothed towards the apex.. Fascicles of 7–15 flowers, of which 1 is pedicellate and hermaphrodite and the others sessile or subsessile and ♀.. Hermaphrodite flowers with pedicel 0.3–1.8 mm. long; calyx green or pinkish, with the tube slightly constricted at the apex, ± 0.3 mm. long, with 8 smooth or 3–4-mamillate ribs and ± distinct longitudinal nerves between the ribs; calyx-lobes narrowly triangular, 0.2 mm. long, acuminate; petals 4, white or pink, oblong, 0.8–1.2 mm. long, cucullate; stamens 4; anthers linear-oblong; filaments filiform; styles present; stigmas {PAGE}{PAGE}capitate.. Female flowers without petals.. Nutlets pink, obovoid, 0.7 mm. long, 0.5 mm. wide, with 8 smooth or 3–4 mamillate ribs often confluent in pairs, the tubercles white and bead-like.
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Leaves opposite or alternate, rarely sub–3-nate, mostly sessile, somewhat fleshy; leaf-lamina 5–15(20) x 0·5–5 (7) mm., linear, linear-oblong, ovate, elliptic or obovate, rounded at the apex, ± cuneate at base or narrowing into a short petiole, margins entire or 1–4-dentate towards the apex.
Calyx-tube slightly constricted at the apex, c. 0·3 mm. long, with 8 smooth or 3–4-mamillate longitudinal ribs and ± distinct nerves alternating with the ribs; calyx-lobes c. 0–2 mm. long, narrowly triangular, acute.
Suffrutescent usually decumbent or ± erect herb up to 30 cm. tall, or trailing and sometimes forming mats; stems ± branched, often reddish, densely pubescent-villous to entirely glabrous.
Nutlets up to 0·9 x 0·6 mm., barrel-shaped, reddish-brown, with 8 smooth or (2)3–4-tuberculate longitudinal ribs often confluent in pairs, tubercules whitish, glabrous to villous.
Fascicles of 7–11 (15) flowers, of which the central one is hermaphrodite and has a filiform pedicel 0·3–1·8 mm. long and the others are female and sessile or almost so.
Petals 4, 0·8–1·2 mm. long, oblong, slightly cucullate, absent in female.
Stamens 4, oppositisepalous; anthers linear; filaments filiform.
Styles short; stigmas capitate, papillose.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.2 - 0.25
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Rooting depth (meter) -
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Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
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Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

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

Cultivation

Mode -
Germination duration (days) -
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Distribution

Laurembergia tetrandra world distribution map, present in Brazil, Colombia, Peru, Paraguay, Uruguay, and Venezuela (Bolivarian Republic of)

Conservation status

Laurembergia tetrandra threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:430371-1
WFO ID wfo-0000364064
COL ID 3SMGS
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Laurembergia tetrandra Haloragis tetrandra Laurembergia tetrandra subsp. brachypoda Laurembergia tetrandra var. brachypoda Serpicula repens var. brachypoda

Lower taxons

Laurembergia tetrandra var. numidica