Dicoma plantaginifolia O.Hoffm.

Species

Angiosperms > Asterales > Asteraceae > Dicoma

Characteristics

Acaulescent perennial herb.. Leaves all basal, forming a rosette, oblanceolate to obovate to almost round, 4–15 cm long, 1–8(–12.5) cm wide, cuneate into a membranous slightly expanded base, margins minutely serrulate, apex obtuse to rounded, minutely apiculate, dark green and glabrous above, white-tomentose beneath, with 1–2 prominent ascending subbasal veins on each side.. Capitula 1–4, subsessile, precocious on surface of soil, or in centre of leaf rosette, discoid; involucre 25–32(–40) mm long; phyllaries ± 170, multiseriate, the outer narrowly lanceolate, glabrous, shiny white or pallid with paler membranous, minutely shortly pectinate-ciliate margins, becoming progressively longer and broader-margined inwards, the longest ± 25(–35) mm long, acuminate, pungent, the innermost ± 35 shorter, membranous, lanceolate to oblong, acuminate, rarely tomentellous.. Florets ± 40, all tubular, hermaphrodite; corolla yellow, glabrous, 10.5–11 mm long, lobes narrow, 4.5–5.5 mm long.. Achenes 3 mm long, densely hirsute with long ascending white or tawny hairs; pappus of numerous plumose bristles, the outer shorter, the inner longer, subequal, 9.5–10 mm long.
More
Leaves few to numerous, prostrate discolorous subsessile, 6–20 x 1.5–12 cm., oblong-elliptic, oblanceolate-elliptic or ± orbicular, rounded and somewhat cuspidate at the apex or obtuse, broadly cuneate below narrowing to a winged midrib up to c. 2 cm. long, somewhat stem-clasping at the base, margins sparsely denticulate or serrulate, slightly revolute, green and glabrous on upper surface, white araneose-sericeous beneath (the indumentum sometimes peeling off), strongly 5(7)-nerved from the base, venation finely reticulate and prominent on both surfaces, or obscured by the indumentum beneath.
Phyllaries stiffly slightly diverging, greenish to straw-coloured, chartaceous, sharply ciliolate on upper margins otherwise glabrous, the outermost usually not extending onto the capitulum stalk; the outer phyllaries from c. 7 mm. long and linear-lanceolate, usually somewhat falcate, tapering to a pungent apex; the inner phyllaries to c. 35 mm. long and narrowly lorate-lanceolate, ± scarious-winged in the lower part, inrolled and long-acuminate finely pungent to the apex; innermost phyllaries somewhat shorter, membranous winged and sharply cuspidate.
Corollas creamy to brownish usually with purplish lobes, 10–13 mm. long, infundibuliform; lobes 5–6.5 mm. long, linear, erect; achenes c. 2 mm. long, narrowly turbinate, densely long-ascending hispid; pappus copious, several seriate of plumose white setae 8–11 mm. long, shorter on the outside, seta bristles 0.5–1 mm. long.
Stems sometimes developed but abbreviated, erect to c. 5 cm. tall, simple or with a few short branches, and with 1–3 persistent leaf bases.
Involucres mostly 25–36 mm. long, 20–50 mm. in diam. in the upper part, broadly obconic-campanulate.
A perennial herb, usually acaulescent, from a woody rootstock; roots numerous spreading thong-like.
Capitula subsessile, 1–7, solitary or densely clustered in the leaf rosette.
Life form perennial
Growth form herb
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Sexuality hermaphrodite
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Mature height (meter) 0.05
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Environment

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Hardiness (USDA) 9-12

Usage

Uses -
Edible -
Therapeutic use -
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Cultivation

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Distribution

Dicoma plantaginifolia world distribution map, present in Angola, Burundi, Malawi, Tanzania, United Republic of, and Zambia

Identifiers

LSID urn:lsid:ipni.org:names:201353-1
WFO ID wfo-0000036812
COL ID 35QHW
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Macledium plantaginifolium Dicoma pygmaea Dicoma plantaginifolia