Stokesia

Stokesia

Languages: English

Overview

General Description

Stokesia is a monotypic genus local to the southeastern United States.  For more information on this genus, please see the page for its only species, Stokesia laevis

 

Author(s): Hamilton, Hayley
Rights holder(s): Hamilton, Hayley

Description

Diagnostic Description

"Stokesia L’Héritier, Sert. Angl. 27. 1789.

[For Jonathan Stokes, 1755–1831, English physician and botanist]

Perennials, 2–5+ dm; perhaps rhizomatous. Leaves basal and cauline; proximal petiolate, blades ovate to lanceolate or lance-linear; distal ± sessile, blades ovate or elliptic to lanceolate or lance-linear, bases ± clasping, margins entire or spinose-toothed; all with apices rounded to acute, faces glabrous or glabrate, resin-gland-dotted. Heads pseudo-radiant (see here at corollas), ± pedunculate, not individually bracteate; borne singly or in loose, ± corymbiform arrays 6–12 cm diam. Involucres ± hemispheric, 25–45 mm diam. Phyllaries 25–35+ in 5–7 series, the outer with appressed, ± chartaceous bases, distally ± foliaceous, margins pectinately spiny-toothed (at least at base), inner ± chartaceous throughout, mostly entire, faces ± tomentulose and resin-gland-dotted. Florets 12–35(–70+); corollas usually blue to purplish blue (rarely white or lilac), tubes longer than funnelform throats, lobes 5, lance-linear (in peripheral florets adaxial sinus much deeper than others and corollas zygomorphic, ± raylike or ligulelike, in central florets corollas ± actinomorphic). Cypselae ± columnar, 3–4-angled, glabrous; pappi caducous, of 4–5 scales. x = 7.

Species 1: se United States."

Strother, John L. “Stokesia” in Flora of North America, Vol. 19, pp.201-202, Oxford University Press, Inc.,  New York, NY.  2006.

Author(s): Strother, John L.
Rights holder(s): Strother, John L.

Taxonomic Children

Total: 1

Stokesia laevis (Hill) Greene

References

Barb, J. G., Werner D. J., & Griesbach R. J. (2008).  Genetics and Biochemistry of Flower Color in Stokes Aster. Journal of the American Society of Horticultural Science. 133(4), 569-578.
Greene, E. L. (1893).  Observations on the Compositae. Erythea. 1, 1-4.
Hill, J. (1768).  Hortus Kewensis: Sistens herbas exoticas, indigenasque rariores, in area botanica, ... Auctore Johanne Hill.
Kleiman, R. (1990).  Chemistry of New Industrial Oilseed Crops.
L'Heritier, C L. (1789).  Sertum Anglicum seu Plantae Rariores quae in Hortus juxta Londinum, Imprimis in Hortus Regio Kewensi Excoluntur.
Samuel B. Jones, J.. (1968).  Chromosome Numbers in Southeastern United States Compositae. Bulletin of the Torrey Botanical Club. 95(4), 393-395.
Samuel B. Jones, J.. (1974).  Vernonieae (Compositae) Chromosome Numbers. Bulletin of the Torrey Botanical Club. 101(1), 31-34.
Skvarla, J. J., DeVore M. L., & Chissoe W. F. (2005).  Lophate sculpturing of Vernonieae (Compositae) pollen. Review of Palaeobotany and Palynology. 133(1-2), 51-68.
Strother, J. L. (2006).  Stokesia. Flora of North America. 19, 201-202. New York, NY: Oxford University Press, Inc.
USDA, NRCS. (2010).  The PLANTS Database.