Swertia volkensii Gilg

Species

Angiosperms > Gentianales > Gentianaceae > Swertia

Characteristics

Rhizomatous or non-rhizomatous perennial herb with persistent basal leaf rosette.. Stems 7–16 cm high, unbranched or densely branched from the base, creeping to erect, rooting at the nodes or not, stem angles smooth.. Basal rosette leaves with ± winged petiole 23–45 mm long, blade lanceolate or elliptic-lanceolate, 11–19 mm long, 5–8 mm wide, obtuse; cauline leaves ascending to erect, sessile, lanceolate, 8–11 mm long, 5–8 mm wide, obtuse, amplexicaul.. Inflorescences uniflorous or few-flowered cymes; pedicels 11–29 mm long, pedicel of the terminal flower always longer than pedicels of lateral flowers; bracteoles oblong or oblong-lanceolate, 8–13 mm long, 3–5 mm wide, obtuse.. Flowers 5-merous.. Calyx lobes oblong or lanceolate, 6–6.5 mm long, 1.5–2 mm wide, acute to subacute.. Corolla white with purplish-brown median dorsal stripes; tube very short, 0.7–0.8 mm long; lobes elliptic-obovate or obovate, 6.5–7.5 mm long, 2.5–3 mm wide, obtuse, with 1 nectary; nectary circular or ovoid, 2–2.8 mm diameter, 1–1.5 mm from base of lobes, margins naked.. Stamens with filaments 3–3.5 mm long, scale-like projections absent at their attachment points; anther oblong to sub-rotund, 1.1–1.3 mm long.. Ovary oblong, 4–4.3 mm long, 2–3 mm diameter; style 0.1–0.2(–0.3) mm long; stigma minutely bilobed, lobes oblong, 0.1–0.2 mm long, 0.3–0.4 mm wide, obtuse; parietal placentae indistinct.. Capsule oblong, (12–)15–20 mm long, 5–8 mm diameter.. Seeds brown, 1.3–1.6 mm in length, surface with short broken striations or interrupted ridge-like outgrowths.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.07 - 0.16
Root system creeping-root
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) -

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

Swertia volkensii world distribution map, present in Kenya and Tanzania, United Republic of

Identifiers

LSID urn:lsid:ipni.org:names:371133-1
WFO ID wfo-0000498034
COL ID 53JZ3
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Swertia keniensis Swertia volkensii

Lower taxons

Swertia volkensii var. baleensis