''Clerodendrum thomsoniae'' is a species of flowering plant in the genus '' Clerodendrum'' of the family

Lamiaceae The Lamiaceae ( ) or Labiatae are a family of flowering plants commonly known as the mint, deadnettle or sage family. Many of the plants are aromatic in all parts and include widely used culinary herbs like basil, mint, rosemary, sage, savory ...

, native to tropical west Africa from Cameroon west to Senegal. It is an evergreen

liana A liana is a long- stemmed, woody vine that is rooted in the soil at ground level and uses trees, as well as other means of vertical support, to climb up to the canopy in search of direct sunlight. The word ''liana'' does not refer to a ta ...

growing to tall, with ovate to oblong

leaves A leaf (plural, : leaves) is any of the principal appendages of a vascular plant plant stem, stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", wh ...

cm long. The flowers are produced in

cymes An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed on ...

of 8–20 together, each flower with a pure white to pale purple five-lobed

calyx Calyx or calyce (plural "calyces"), from the Latin ''calix'' which itself comes from the Ancient Greek ''κάλυξ'' (''kálux'') meaning "husk" or "pod", may refer to: Biology * Calyx (anatomy), collective name for several cup-like structures ...

2.5 cm in diameter, and a red five-lobed

corolla Corolla may refer to: *Corolla (botany), the petals of a flower, considered as a unit *Toyota Corolla, an automobile model name * Corolla (headgear), an ancient headdress in the form of a circlet or crown * ''Corolla'' (gastropod), a genus of moll ...

2 cm long and in diameter. The flowers are born in cymose inflorescences arising from the axils of the leaves. The leaves, in turn, are arranged opposite to each other and at right angles to the pairs above and below. An unambiguous common name is bleeding glory-bower; terms like "glory-bower", "bagflower" or "bleeding-heart vine" are also often encountered but can refer to any of the roughly 400 species of ''Clerodendrum''. In some regions it has escaped from cultivation and become

naturalised Naturalization (or naturalisation) is the legal act or process by which a non-citizen of a country may acquire citizenship or nationality of that country. It may be done automatically by a statute, i.e., without any effort on the part of the in ...

. It is grown as an ornamental plant for its decorative two-coloured flowers. With a minimum temperature of , in temperate areas it requires shelter and a frost-free environment. This plant has gained the Royal Horticultural Society's

Award of Garden Merit The Award of Garden Merit (AGM) is a long-established annual award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performance under UK growing conditions. History The Award of Garden Merit ...

(confirmed 2017). Bleeding Heart

The plant was named at the request of Rev.

William Cooper Thomson William is a masculine given name of Norman French origin.Hanks, Hardcastle and Hodges, ''Oxford Dictionary of First Names'', Oxford University Press, 2nd edition, , p. 276. It became very popular in the English language after the Norman conques ...

(1829-22 March 1878), a missionary and physician in Nigeria, in honor of his late first wife. This plant was very popular during the mid 19th century under the name "beauty bush". It lost favour only when its unusual culture conditions were forgotten. Specifically, its root system must be partially submerged in water most of the time, and it wants very good light.

Etymology

''Clerodendrum'' is derived from Greek and means 'chance tree'.Gledhill, David (2008). "The Names of Plants". Cambridge University Press. (hardback), (paperback). pp 111

References

External links

''Clerodendrum thomsoniae''
*

thomsoniae Flora of Africa Garden plants Plants described in 1862 Taxa named by Isaac Bayley Balfour {{Lamiaceae-stub