Alyssum spinosum L.

TSO logo


For information about how you could sponsor this page, see How You Can Help


Article from Bean's Trees and Shrubs Hardy in the British Isles



  • Ptilotrichum spinosum (L.) Boiss.

Other species in genus


    (pl. apices) Tip. apical At the apex.
    Relating to lime- or chalk-rich soils or water.
    With an unbroken margin.
    Lacking hairs smooth. glabrescent Becoming hairless.
    Inversely lanceolate; broadest towards apex.
    Generally an elongated structure arising from the ovary bearing the stigma at its tip.


    There are currently no active references in this article.


    Article from Bean's Trees and Shrubs Hardy in the British Isles

    A spiny shrub of dense habit, with interlacing branches, 6 to 15 in. high, usually much more in diameter; young shoots covered with a close, silvery scurf; spines slender, 18 to 58 in. long. Leaves narrowly oblong to oblanceolate, tapered at the base, pointed or rounded at the apex, entire; 12 to 2 in. long, 116 in. or less wide; covered on both sides with silvery, star-like down. Flowers white or pale rose, fragrant, 310 in. wide, numerous and closely packed in terminal umbellate racemes 34 in. wide; petals four, obovate, tapered to the base. Pod circular to obovate, 18 in. wide, glabrous, terminated by the persistent style.

    Native of S.W. Europe and N. Africa, common in calcareous rocky places in S. France and Spain; introduced in 1683. It succeeds very well in full sunshine in rock gardens south of London, flowering in May and June.


    A site produced by the International Dendrology Society through the support of the Dendrology Charitable Company.

    For copyright and licence information, see the Licence page.

    To contact the editors: