Thesium nigricans Rendle

Species

Angiosperms > Santalales > Santalaceae > Thesium

Characteristics

Perennial herb with small woody caudex; stems few to many from the crown, c. 300 mm–1 m tall, erect, decumbent or straggling, profusely divaricately branched, broadly ribbed by the decurrent leaves, distinctly channelled between the ribs (when dry, ribs blackish to dark red-brown, channels paler), leafy, whole plant drying black to dark red-brown.
More
Leaves ascending-recurved to spreading, c. 7–20 × 0.5–1 mm, smaller upwards and passing into bracts, linear, apiculate, margins cartilaginous, smooth to very minutely scabridulous, scabrid projections sometimes dorsal as well and extending down the stems on the decurrent leaves, ventral surface flat, dorsal ± rounded (leaf deltoid in section).
Perianth pale yellowish-green to whitish; tube 0.5–1.2 (0.4–0.5) mm long, external glands inconspicuous; lobes 0.7–1.5 × 0.5–0.8 (0.7–0.8 × 0.4–0.6) mm, usually 5, occasionally 4 and then mixed with 5-lobed flowers, triangular, subacute, glabrous.
Bracts (lowermost) 3–12.5 × 0.4–1.1 mm, linear, leaf-like, adnate almost or quite to entire pedicel; bracteoles 2, similar to bracts but smaller.
Flowers solitary in axils of bracts, 1–6 racemosely arranged at branchlet tips, the whole forming a profusely branched panicle.
Stamens inserted at base of lobes; filaments 0.2–0.8 (0.2–0.3) mm long, clearly visible; anthers 0.25–0.5 (0.25–0.3) mm.
Fruit 1.8–2.5 × 1.7–2.5 mm, light yellowish-to red-brown, with ribs and reticulations, but these not strongly raised.
Style 0.5–1.8 (0.4–0.6) mm long; stigma reaching top of anthers.
Pedicels 0.5–3 mm long, or flowers sessile.
Life form perennial
Growth form herb
Growth support parasite
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 1.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

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

Usage

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

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Thesium nigricans world distribution map, present in Mozambique, Malawi, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:781004-1
WFO ID wfo-0001134550
COL ID 56FKB
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Thesium nigricans Thesium scabridulum