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Brief Summary

    Heliotropium europaeum: Brief Summary
    provided by wikipedia

    Heliotropium europaeum is a species of heliotrope known by the common names European heliotrope and European turn-sole. It is native to Europe, Asia, and North Africa, but it is widely naturalized elsewhere, such as in Australia and North America. It grows as a roadside weed in some places. This is an annual herb growing from a taproot and reaching maximum heights near 40 centimeters. The stem and oval-shaped leaves are covered in soft hairs. The inflorescences are coiled spikes of white flowers with fuzzy or bristly sepals. Each flower is just a few millimeters wide. The fruit is a bumpy nutlet.

Comprehensive Description

    Heliotropium europaeum
    provided by wikipedia

    Heliotropium europaeum is a species of heliotrope known by the common names European heliotrope[1] and European turn-sole.[2] It is native to Europe, Asia, and North Africa, but it is widely naturalized elsewhere, such as in Australia and North America. It grows as a roadside weed in some places. This is an annual herb growing from a taproot and reaching maximum heights near 40 centimeters. The stem and oval-shaped leaves are covered in soft hairs. The inflorescences are coiled spikes of white flowers with fuzzy or bristly sepals. Each flower is just a few millimeters wide. The fruit is a bumpy nutlet.

    Toxicity

    Heliotropium europaeum contains pyrrolizidine alkaloids and is poisonous.[3]

    References

    1. ^ "Heliotropium europaeum". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 19 January 2016..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""'"'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
    2. ^ "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17.
    3. ^ The MERCK Veterinary Manual, Table 5 Archived 2010-11-17 at the Wayback Machine.

Distribution

    Distribution
    provided by eFloras
    Naturalized in W Gansu, Xinjiang [Afghanistan, India, Pakistan, Russia; N Africa, SW Asia, S Europe].

Morphology

    Description
    provided by eFloras
    Herbs annual, 20-50 cm tall. Stems erect or ascending, branched from base, strigose or hirtellous. Petiole 1-4 cm; leaf blade elliptic to elliptic-ovate, 1.5-4 × 1-2.5 cm, abaxially gray-green and densely hirtellous, adaxially green and sparsely hirtellous, base widely cuneate to rounded, apex obtuse to acute. Cymes terminal and axillary, scorpioid, simple or dichotomously branched, 2-4 cm. Flowers sessile. Calyx lobes ovate to ovate-lanceolate, 2-3 × 1-1.5 mm, not enlarged in fruit, strigose. Corolla white, 4-5 mm, base 1.5-2 mm wide; throat slightly contracted; limb (2-)3-4 mm wide; lobes rounded, ca. 1.5 mm wide, short strigose outside, glabrous inside. Anthers ovate-oblong, ca. 1 mm, without filaments, attached ca. 1 mm above base of corolla tube. Ovary globose, 0.5-0.7 mm in diam. Style short; stigma long conical, deeply 2-cleft, 1.2-1.5 mm, ringlike portion glabrous, apex short strigose. Fruit 2.5-3 mm in diam.; mericarps ovate, ca. 2 mm, ± distinctly tuberculate, glabrous. Fl. and fr. Jul-Sep. 2n = 24, 32, 48.

Habitat

    Habitat
    provided by eFloras
    Gravelly deserts, river banks, valleys; 100-800 m.