Symphyotrichum praealtum (Poiret) G. L. Nesom (Q2453)
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Symphyotrichum praealtum is a taxon with the rank species within the section Symphyotrichum sect. Symphyotrichum
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Symphyotrichum praealtum (Poiret) G. L. Nesom
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Symphyotrichum praealtum is a taxon with the rank species within the section Symphyotrichum sect. Symphyotrichum
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Statements
taxon/id/Symphyotrichum praealtum (Poiret) G.L. Nesom
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Symphyotrichum praealtum (Poiret) G.L. Nesom
Symphyotrichum praealtum
(Poiret) G.L. Nesom
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 20: Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford University Press, New York.
accepted
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CA-ON
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US-AL
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US-AR
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US-CT
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US-DE
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US-DC
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US-FL
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US-IL
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US-IN
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US-IA
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US-KS
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US-KY
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US-LA
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US-ME
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US-MD
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US-MA
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US-MI
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US-MS
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US-MO
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US-NE
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US-NH
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US-NJ
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US-NY
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US-OH
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US-OK
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US-PA
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US-RI
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US-SD
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US-TN
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US-TX
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US-VA
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US-WV
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US-WI
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Stems 1, erect to ascending (stout, ± glaucous or reddish), glabrate to moderately hispidulous-hirsute (mostly in lines) distally.
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Leaves thick, firm, margins often revolute, scabrous, apices mucronate, abaxial faces glabrous, vein areoles conspicuous, ± isodiametric, adaxial waxy, glabrate to strigose, ± scabrous (distal cauline with axillary leaf clusters, sometimes becoming branches);
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basal withering by flowering, petiolate to subpetiolate (petioles winged, bases sheathing, ciliate), blades spatulate, 40–70 × 10–25 mm, bases attenuate, margins entire to shallowly serrate, apices rounded to obtuse;
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proximal cauline withering by flowering, sessile (subpetiolate), blades elliptic or lanceolate to oblanceolate or linear-lanceolate, 40–100 (–150) × 3–18 mm, progressively reduced distally, bases cuneate, often slightly rounded, apices acute to attenuate, callus-pointed, abaxial faces scabrellous, adaxial glabrous or ± puberulent;
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distal sessile, blades ovate or elliptic-lanceolate to lanceolate or linear, 10–85 × 2–17 mm, progressively reduced distally, bases cuneate, margins entire, apices acute or obtuse, callus-pointed.
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Heads in ample, foliaceous, usually dense, paniculiform arrays, branches ascending to spreading, ± racemiform.
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Peduncles 0.3–2 cm, ± pilose, bracts 5–12+, ascending or recurved-spreading, lance-elliptic to lanceolate or linear-lanceolate, foliaceous, distal closely subtending heads, not grading into phyllaries.
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Involucres campanulate, (4–) 5–7 (–8) mm.
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Phyllaries in 4–6 series, appressed, oblong-lanceolate to linear (innermost) (outer sometimes ± foliaceous), unequal, bases indurate 1/2–3/4, margins scarious, erose, hyaline, sparsely ciliolate (often ciliate basally), green zones lanceolate to lance-rhombic, apices sometimes spreading, acute to acuminate, mucronate, often reddish purple apically, faces glabrous.
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Ray-florets (6–) 20–35;
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corollas pale blue-violet to lavender or rose-purple, rarely white, laminae 5–10 (–12) × 1–1.7 mm.
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Disc-florets 20–30 (–35+);
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corollas cream or light yellow turning pinkish purple, 4–6.5 mm, tubes shorter than narrowly funnelform throats, lobes lanceolate, 0.5–1.3 mm.
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Cypselae purple or stramineous with purple, obovoid, sometimes ± compressed, 1.5–2 mm, 4–5-nerved, faces thinly strigillose;
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pappi white, 4–6.5 mm. 2n = 32, 48, 64.
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glabrate
moderately hispidulous-hirsute
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lanceolate
oblanceolate or linear-lanceolate
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reduced
progressively; distally
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elliptic-lanceolate
lanceolate or linear
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reduced
progressively; distally
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lance-elliptic
lanceolate or linear-lanceolate
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pale blue-violet
lavender or rose-purple
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light yellow turning pinkish purple
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stramineous with purple
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compressed
sometimes more or less
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