Oclemena reticulata

(Pursh) G. L. Nesom

Phytologia 77: 264. 1995.

Common names: Pinebarren or pinebarren whitetop aster
Basionym: Aster reticulatus Pursh Fl. Amer. Sept. 2: 458. 1813
Synonyms: Aster dichotomus Elliott Chrysopsis obovata Nuttall Diplopappus obovatus (Nuttall) Torrey & A. Gray Diplostephium dichotomum (Elliott) de Candolle Doellingeria obovata (Nuttall) Nees Doellingeria reticulata (Pursh) Greene
Treatment appears in FNA Volume 20. Treatment on page 79. Mentioned on page 43, 78.

Plants 30–90 cm (cespitose or densely clonal; caudices superficial, woody, branched, and deep, rhizomes short to long, herbaceous or woody). Stems 1–4+, erect, stout (2–4 mm diam.), straight, simple, densely villosulous, ± glandular distally. Leaves 12–30, regularly distributed, proximal sometimes withering by flowering; sessile to short-petiolate (petioles 1–2 mm); blades obovate-elliptic or ovate-elliptic to elliptic-oblong, 25–110 × 10–40 mm, bases cuneate to rounded, margins revolute, ± undulate, entire or serrate distally, teeth coarse, ± obtuse, apices acute to obtuse, mucronate, faces densely villosulo-puberulent, stipitate-glandular, adaxial more so, array leaves reduced distally. Heads (3–)9–40(–67) in corymbiform arrays, branches strongly ascending, at acute angles with stems. Peduncles stout, 2–5 cm, ± densely villosulous, stipitate-glandular. Involucres 4.8–7.2 mm. Phyllaries lance-ovate (outer) to lance-linear (inner), ± pilose, gland-dotted; bracts 0–1(–2), linear, villosulous-puberulent. Ray florets (5–)7–11(–14); corollas white to pinkish, (10–)11.5–17(–19) × (0.8–)1–1.8(–2.2) mm. Disc florets (10–)15–30(–35); corollas slightly ampliate, 5–8 mm, sparsely glandular; tubes longer than narrowly campanulate throats, strigillose, lobes slightly spreading, lanceolate, 2–4 mm. Cypselae tan, fusiform, ± compressed, (1.5–)2–4.2 mm, ribs 6–8 (lighter than bodies), faces strigillose, gland-dotted; pappi of whitish bristles in 3 series, ± equal to disc corollas (innermost ± clavate). 2n = 18.

Phenology: Flowering spring(–summer in damaged plants).
Habitat: Moist (at least seasonally) sandy places, bogs, wet pine flatwoods, cypress pond margins, roadside cuts, burns
Elevation: 0–50 m


Oclemena reticulata is a southern Atlantic coastal plain element and is a facultative wetland indicator. Although most often grouped with Doellingeria, its distinctness can be perceived in the morphometric study by J. C. Semple et al. (1991), who provided a full synonymy for the species.

Selected References


Lower Taxa

... more about "Oclemena reticulata"
Luc Brouillet +
(Pursh) G. L. Nesom +
Aster reticulatus +
Pinebarren or pinebarren whitetop aster +
Ala. +, Fla. +, Ga. +  and S.C. +
0–50 m +
Moist (at least seasonally) sandy places, bogs, wet pine flatwoods, cypress pond margins, roadside cuts, burns +
Flowering spring(–summer in damaged plants). +
Aster dichotomus +, Chrysopsis obovata +, Diplopappus obovatus +, Diplostephium dichotomum +, Doellingeria obovata +  and Doellingeria reticulata +
Oclemena reticulata +
Oclemena +
species +