Marshallia caespitosa

Nuttall ex de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 680. 1836.

IllustratedEndemic
Synonyms: Marshallia caespitosa var. signata Beadle & F. E. Boynton
Treatment appears in FNA Volume 21. Treatment on page 458. Mentioned on page 457.

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: Flowering May–Jun.
Habitat: Limestone outcrops, sandy soils
Elevation: 100–1000 m

Distribution

V21-1152-distribution-map.gif

Ark., Kans., La., Mo., Okla., 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.

Selected References

None.

Lower Taxa

None.
... more about "Marshallia caespitosa"
not tailed +, rounded +  and obtuse +
cream +  and purple +
connate +  and distinct +
mucronate;acute;mucronate;obtuse;acute +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
corymbiform +  and open +
indeterminate +  and determinate +
Linda E. Watson +
Nuttall ex de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
decurrent +
0.95 cm9.5 mm <br />0.0095 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
linear-oblanceolate;linear-elliptic;linear-oblanceolate;linear-elliptic +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.95 cm9.5 mm <br />0.0095 m <br />) +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
sessile +  and petiolate +
pale lavender +  and white +
clavate +  and turbinate +
fertile +  and bisexual +
fertile +  and bisexual +
Ark. +, Kans. +, La. +, Mo. +, Okla. +  and Tex. +
100–1000 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Limestone outcrops, sandy soils +
indeterminate +
2 cm20 mm <br />0.02 m <br /> (?) +  and 3.2 cm32 mm <br />0.032 m <br /> (?) +
homogamous +  and heterogamous +
each +  and sessile +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
hemispheric;obconic +
sessile +  and petiolate +
lance-linear +  and linear-oblong +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (?) +  and 0.1 cm1 mm <br />0.001 m <br /> (?) +
2-carpellate +
persistent +
10 cm100 mm <br />0.1 m <br /> (28 cm280 mm <br />0.28 m <br />) +
Flowering May–Jun. +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
12 +  and 24 +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
convex;conic +
lance-deltate +  and lance-attenuate +
scarious +  and membranous +
exalbuminous +
Illustrated +  and Endemic +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Marshallia caespitosa var. signata +
Marshallia caespitosa +
Marshallia +
species +
80 cm800 mm <br />0.8 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
20 cm200 mm <br />0.2 m <br /> (80 cm800 mm <br />0.8 m <br />) +
50 cm500 mm <br />0.5 m <br /> (80 cm800 mm <br />0.8 m <br />) +