Periglossum mackenii Harv.

Species

Angiosperms > Gentianales > Apocynaceae > Periglossum

Characteristics

Stem 2-2 1/2 ft. high, unifariously (bifariously, Harvey) puberulous on the upper part, with internodes 1 1/2-3 1/2 in. long; leaves sessile, widely spreading, 3 1/2-4 1/2 in. long, 3/4-1 1/4 lin. broad, linear, acute, with revolute margins, glabrous above, puberulous on the midrib beneath; umbels about 5, lateral at the nodes, pedunculate, globose, about 3/4 in. in diam., many-flowered; peduncles 1/2-2 in. long, puberulous along one side; pedicels 1/3-1/2 lin. long, puberulous; sepals 1 1/3-1 3/4 lin. long, 2/3-3/4 lin. broad, lanceolate, acute, thinly puberulous; corolla-lobes suberect, 2 1/3-3 lin. long, 3/4-1 lin. broad, narrowly oblong or lanceolate-oblong, somewhat acute, glabrous on both sides; corona-lobes erect, overtopping the staminal column, 1 3/4-2 1/4 lin. long, 3/4 lin. broad, spathulate, with an oblong or elliptic-oblong obtuse blade about twice as long as the linear stalk and variably tapering or subtruncately contracted into it, or sometimes linear-oblong with scarcely any evident stalk, thickened around the apex and with a transverse tubercle or ridge at the middle on the inner face, but no keels; alternating filaments at the base of the lobes very minute or rudimentary; staminal column 1 1/2 lin. long, subglobose, contracted under the anther-appendages, which are horizontally inflexed over the very small knob-like style-apex; anther-cells curved; pollen-masses flattened, crescent-like, obtuse at both ends, slightly translucent at the free end; caudicles about twice as long as the pollen-masses, sigmoid-curved at the middle, straight above and below.
More
Perennial, geophytic herb, 150-750 mm high. Leaves with blade linear to almost filiform. Inflorescence 1-8-flowered, spherical, globose. Flowers: pedicels 8-12 mm; corolla broad, suberect to narrowly oblong, lobes glabrous, margins revolute, pale green tinged purple; outer corona blade tongue-like, ovate-oblong to elliptic-oblong, tapering into a rounded thickened and obtuse apex, dorsally smooth, ventrally transversely ridged ± in middle, 4-5 x 1.7 mm, stalk short and wide, lobe usually 2.0-2.5x longer than stalk, sometimes appearing sessile; inner corona lobes rudimentary up to ± 2 mm long, corona green. Pollinia ± 1/2 length of translator’s arm; translator arms thin and twisted, sigmoid-curved with straight upper and lower parts. Flowering time Nov.-Mar. Fruit a follicle.
Perennial, grassland herb, 150-300 mm high. Leaves with blade linear to almost filiform. Flowers: blade of outer corona lobes oblong, or narrowly ovate-oblong to elliptic-oblong, 2-25 x as long as pedicel, inner lobes rudimentary, up to 2 mm long; corona green; filaments alternating with corona lobes minute; corolla pale green, tinged with purple; Nov.-Mar.
Perennial herb, 150-300 mm tall. Blade of corona lobes oblong or lanceolate-oblong to elliptic-oblong, 2-2.5 times as long as stalk. Filaments alternating with corona lobes minute. Flowers pale green, tinged with purple; corona green.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.15 - 0.46
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity 1-3
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

Periglossum mackenii world distribution map, present in South Africa

Identifiers

LSID -
WFO ID wfo-0001103560
COL ID -
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Periglossum mackenii