Symphyotrichum rhiannon Weakley & Govus

Rhiannon's aster (en)

Species

Angiosperms > Asterales > Asteraceae > Symphyotrichum

Characteristics

Perennials, 15–40(–60) cm, colonial; thinly long-rhizomatous. Stems 1, erect (straight), hirsute to hispido-hirsute, hirsutulous distally. Leaves: margins shallowly crenate to serrate-crenate, abaxial faces strigillose, adaxial scabrous; basal withering by flowering, petiolate, petioles winged, clasping to subclasping, shallowly auriculate, blades subspatulate or oblanceolate-elliptic, 30–70 × 10–15 mm, bases attenuate to cuneate, apices acute; proximal cauline withering by flowering, widely winged-petiolate, blades oblanceolate-elliptic, 50–110 × 8–22 mm, bases attenuate, apices acute; distal subsessile, blades oblong-lanceolate, 10–30 × 4–6(–8) mm. Heads in broad, cylindro-paniculiform arrays, branches ascending. Peduncles 0.5–1.5(–3) cm, bracts foliaceous. Involucres turbino-campanulate, 6–11 wide mm. Phyllaries in 3–4 series, slightly unequal, narrowly oblong-lanceolate, bases indurate 1 / 2 – 2 / 3 , margins not scarious, irregularly ciliolate, green zones rhombic-lanceolate, apices acute to acuminate, faces glabrous or distally strigoso-puberulent. Ray florets 18–32; corollas blue to lavender, laminae 6–9 × 0.8–1.4 mm. Disc florets [number unknown]; corollas yellow, at least lobes becoming purple, (4–)4.5–5.5 mm, tubes shorter than cylindro-funnelform limbs, lobes triangular, 0.8–1 mm. Cypselae tan to often purplish, oblong to oblanceoloid, ± compressed, 2.6–3 mm, 4–6-nerved, faces sparsely strigillose; pappi white, [length unknown] mm.
Life form perennial
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
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) -

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 -

Images

Symphyotrichum rhiannon unspecified picture

Distribution

Symphyotrichum rhiannon world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:60437709-2
WFO ID wfo-0000135454
COL ID 7B6JG
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Symphyotrichum rhiannon