Marshallia caespitosaNutt. [family ASTERACEAE ] (stored under name);
Related name
Marshallia caespitosa
Flora
Entry for Marshallia caespitosa Nuttall ex de Candolle [family COMPOSITAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 21,
Names
Marshallia caespitosaNuttall ex de Candolle [family COMPOSITAE], in A. P. de Candolle and A. L. P. P. de Candolle, Prodr., 5: 680. 1836
Marshallia caespitosa var. signata Beadle & F. E. Boynton [family COMPOSITAE]
Treatment Author(s)
Linda E. Watson
Information
Plants (10–)20–50(–80) cm (aerial stems unbranched, usually clustered). Leaves mostly basal; basal petiolate; blades 3-nerved, linear, linear-elliptic, or linear-oblanceolate, 5–15 cm × 2.5–9.5(–15) mm. Heads borne singly, 20–32 mm diam. Peduncles 10–28 cm. Phyllaries 9–12 × 1–3 mm, (margins sometimes narrowly-winged proximally) apices obtuse to acute, often mucronate. Paleae linear, apices acute or mucronate. Corollas usually white, sometimes pale lavender, lobes 4–6 × 0.5–1 mm. Pappi: scale margins irregularly fimbriate. 2n = 18, 36.
Phenology
may (spring), jun (summer)
Altitude range
100–1000 m;
Distribution
USA Ark.USA Kans.USA La.USA Mo.USA Okla.USA Tex.
Discussion
Scapiform to subscapiform plants of Marshallia caespitosa with relatively few cauline leaves and heads borne singly occur mostly in Oklahoma and southeast Texas and Louisiana. Plants with more or less leafy stems and one to relatively many heads are sometimes recognized as var. signata; they grow mostly in central Texas.