Symphyotrichum adnatum |
Symphyotrichum simmondsii |
|
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scaleleaf aster |
Simmonds' aster |
|
Habit | Perennials, 30–120 cm, cespitose; with herbaceous or thick, woody, sometimes cormoid caudices. | Perennials, 10–120 cm, colonial (sometimes extensively); long-rhizomatous. |
Stems | 5+, erect to scandent-sprawling (brown, branched from middle), moderately to densely finely hairy. |
1–3+, erect (straight, rigid, sometimes stout), sparsely scabrellous or glabrescent to glabrate or glabrous. |
Leaves | (yellowish green) thick, firm, margins entire; basal early deciduous, sessile or subpetiolate, blades (3-nerved) oblanceolate to obovate, 10–43 × 7–15 mm, bases cuneate, margins scabrous, apices acute to obtuse, faces sparsely finely scabrous; proximal cauline sessile, blades narrowly obovate to oblanceolate, 20–35 × 5–13 mm, bases auriculate-clasping, margins finely scabrous, apices acute to obtuse, faces finely scabrous, shiny; distal sessile, blades lanceolate to linear, 3–10 × 1–4 mm, gradually reduced to bracts distally, bases subclasping and adnate to stem for 1/2+ length, apices narrowly acute, white-spinulose, faces finely scabrous, viscid, minutely stipitate-glandular. |
firm, margins recurved, scabrous to scabrellous, apices acute to acuminate, mucronulate, abaxial faces pilosulous to glabrate or glabrous, midveins marked, adaxial scabridulous; basal withering by flowering, petiolate (petioles winged, bases sheathing), blades oblanceolate, 26–80 × 6–16 mm, bases attenuate, margins serrate, apices obtuse to acute; proximal cauline mostly withering by flowering, petiolate to subpetiolate (petioles winged, sheathing to clasping), blades elliptic to oblanceolate or lanceolate or lanceolate-linear to sometimes linear, 45–70+ × 8–15 mm, bases attenuate to cuneate, margins serrate or crenate-serrate or entire; distal (erect or spreading) sessile, blades lanceolate or oblanceolate to linear, 10–120 × 5–8 mm, reduced distally, sharply so on array branches, bases attenuate to cuneate, margins serrulate or entire. |
Peduncles | densely short-strigose, glandular, bracts linear, adnate, densely short-strigose. |
0.3–6+ cm, irregular in length along branches, sometimes distally reduced, glabrate to sparsely scabridulous, bracts 7–12+, spreading to ascending, abruptly reduced distally, grading into phyllaries. |
Involucres | campanulate, 4–6.5 mm. |
campanulate to campanulo-turbinate, (4.5–)6–8 mm. |
Ray florets | 10–20; corollas light to dark lavender, laminae 5–8 × 0.5–1.5 mm. |
18–38; corollas pale lilac or lavender to pale purple, laminae 9–11 × 0.9–1.7 mm. |
Disc florets | 12–25; corollas yellow, 3.7–7 mm, throats narrowly funnelform, lobes triangular, 0.4–0.8 mm. |
24–37; corollas yellow becoming reddish, 4.5–7 mm, tubes shorter than funnelform throats, lobes lanceolate, 0.9–1 mm. |
Phyllaries | in 4–5 series, oblong to oblanceolate, strongly unequal, bases (tan) ± indurate, margins hyaline, finely scabrous, green zones lenticular, in distal 1/4–2/5, apices obtuse, mucronate to finely subspinulose, faces scabrellous-puberulent, stipitate-glandular. |
in 5–6 series, oblong-lanceolate to linear-lanceolate or lanceolate (innermost), strongly unequal, bases indurate 1/2–4/5, margins narrowly scarious, distally erose, hyaline, ciliolate, green zones oblanceolate (outer sometimes ± foliaceous), apices acute (inner sometimes acuminate), mucronate, often purplish tipped, faces glabrous. |
Heads | in ± open, paniculiform arrays, branches initially patent then ascending or divaricate. |
in racemiform to usually open, sometimes ± lax, paniculiform arrays, rarely borne singly, branches ascending to spreading, often straggling and arched, ± leafy (each usually with 10+ heads), secondaries sometimes erect and secund-like. |
Cypselae | tan to brown, obovoid, not compressed, 2–2.5 mm, 6–10-nerved (faint), faces sparsely strigose; pappi tan, 3.75–8 mm. |
tan, oblong-obovoid to fusiform-obovoid, compressed, 2–2.6 mm, 4–6-nerved, faces ± strigillose; pappi cream, 4.6–6.5 mm. |
2n | = 20. |
= 64. |
Symphyotrichum adnatum |
Symphyotrichum simmondsii |
|
Phenology | Flowering Oct–Dec. | Flowering Oct–Jan. |
Habitat | Sandy, clayey soils, sandhills, oak-pine scrub, open pine flatwoods, roadsides | Moist or dry soils |
Elevation | 0–100+ m (0–300+ ft) | 0–50 m (0–200 ft) |
Distribution |
AL; FL; GA; LA; MS
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FL; NC; SC
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Discussion | Symphyotrichum simmondsii is known only from peninsular Florida and the southeastern coastal plain. A report from New Jersey is based on an incomplete specimen and appears doubtful. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 20, p. 491. | FNA vol. 20, p. 514. |
Parent taxa | Asteraceae > tribe Astereae > Symphyotrichum > subg. Virgulus | Asteraceae > tribe Astereae > Symphyotrichum > subg. Symphyotrichum > sect. Symphyotrichum |
Sibling taxa | ||
Synonyms | Aster adnatus, Lasallea adnata, Virgulus adnatus | Aster simmondsii |
Name authority | (Nuttall) G. L. Nesom: Phytologia 77: 275. (1995) | (Small) G. L. Nesom: Phytologia 77: 291. (1995) |
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