Leucas martinicensis (Jacq.) is an accepted name. This name is the accepted name of a species in the genus Leucas (family Lamiaceae). The record . In general, the crushed leaves of Leucas species are applied to wounds, sores, especially those of the eyes and nose, chronic skin diseases, such as psoriasis. Global description. Leucas martinicensis is a plant with an aromatic smell. It is erect with square shape stem and simple, opposite and decussate leaves.

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Toute la plante est pubescente.

L’ensemble de la plantule est pubescent. Lfucas rameaux secondaires restent assez courts. La tige est pleine, de section quadrangulaire. Le sommet est en coin aigu et la base est en coin large surtout pour les feuilles basales.

Les deux faces sont leucad d’une douce pubescence courte. Il est long de 12 mm, finement pubescent et parcouru de nombreuses rides longitudinales. La paire ventrale est plus longue que la paire dorsale. Elles sont de couleur brun rouge. Leuucas supported on Google Chrome, Firefox 3. Powered by the open source Biodiversity Informatics Platform. Technology partner Strand Life Sciences. Search in all groups Search within this group. Species specific search options Taxon Hierarchy. Observation specific search options Observed during.

Document specific search options Title. User specific search options User. User Group specific search options Title. Checklists specific search options Observed during. Or, Login with your user account:. Remember me Forgot password? Send a request for permission. Equality of opposite leaves. Hollow or solid stem. Leucas ringoetii De Wild. A general description, with any kind of information about the taxon.

Its main goal is summarize the most relevant or attractive characteristics of this taxon to the general public. There is content in another language. Please click here to read it. It is erect with square shape stem and simple, opposite and decussate leaves. The lamina is oval lanceolate with strongly serrated margin. The whole plant is pubescent. The flowers are assembled in axillary glomeruli surrounding the stem. The calyx is a tube curved at the top and terminating by a leuccas dorsal tine and numerous ventral filiform and shorter tines.

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The corolla is white; it has a simple dorsal lip and a ventral trilobed lip of similar size. They are 5 to 7 mm in diameter. They are carried by a petiole, 5 mm long. They are carried by a petiole, 10 to 15 mm long. Kartinicensis lamina is leucaw to lanceolate, martinicensix serrated. The entire seedling is pubescent. The leaves give off a strong aromatic odor.

It is branched, especially at the lrucas. The secondary branches remain quite short. This species measures 30 cm to 1 m high. The corners of the stem are rounded and the sides are slightly depressed. The stem is covered with a short reflected pubescence. The lamina is oval to lanceolate.

It measures 4 to 9 cm long and 2 to 4 cm wide. The margin is sharply serrated. The apex is acute and the base is in wedged especially for the basal leaves. The lamina is traversed by 4 or 5 arched lateral veins. Both sides are covered with soft short pubescence. The lower surface is covered with small green glands.

It is 12 mm long, finely pubescent lwucas covered with numerous longitudinal wrinkles. The end of the calyx is formed of a large dorsal tine and 8 to 10 filiform shorter ventral tine.

The corolla is white, it is tubular and finished at the top by two lips martinicehsis exceeding the tines of the calyx. The dorsal lip is full and rounded, pubescent, similar in size to the ventral lip. The ventral lip is formed of three rounded lobes. The median lobe is wider than the two lateral lobes. The stamens are grouped into two pairs. The ventral pair is longer than martinicrnsis dorsal pair. At the base of martinjcensis corolla tube are 4 free ovaries connected with a unique style.

Each contain a seed. They are reddish brown in color. A textual diagnostic description of the species that is not necessarily structured. Tige La tige est pleine, de section quadrangulaire.

Fruit Les fruits restent au fond du calice. Ils contiennent chacun une graine. Nomenclature and Classification Nomenclature and Classification. Natural History Natural History Cyclicity. Germination begins in June regardless of tillage. It extends until August or even until the end of September. Weeding and mounding induce new sprouts and an extension of this phase.

Flowering is induced by shortening the length of day and leuxas starts in September, quickly followed by fructification. Thus the total length of the development cycle ranges from 4 months for individuals germinated in June and of 1 month for individuals germinated in September.


The spread germination and late flowering after the last weeding are powerful adaptation strategy in martinicensiw medium. The plant multiplies from a small number of individuals not weeded producing many seeds. martinicensks

Leucas martinicensis

It also multiplies from many late and undeveloped individuals during flowering, but largely increases the soil seed bank. Describes biorhythms – those states or conditions characterised by regular repetition in time, whether on the scale of seconds, hours, days, or seasons. It could also cover phenomena such as “plant flowering” or “chewing rates”. Life cycles are treated in the field for Life Cycle.

Seasonal migration and reproduction are usually treated separately. Les sarclages et le martinicenss induisent de nouvelles germinations et un prolongement de cette phase. Leucas martinicensis is an annual species. It multiplies only by seed. The seeds released at maturity are dispersed by water and the soil working tools. Describes reproductive physiology and behavior, including mating and life history variables.

Includes cues, strategies, restraints, rates. Elle se multiplie uniquement par graines. Other taxa that this taxon may be confused with, and characters useful for their differentiation.

Useful for identification and comparison. Common in invasive species communities. It grows on all soil types although it is more abundant on sandy filtered soils as the ferruginous degraded soils and more rarely on very clayey and very humid soils like vertisols and hydromorphic soils.

It grows on ferralitic and ferruginous humus rich soil, along edges of road and cultures,slope.

Leucas – Wikipedia

It is a weed of rainfed crops culture system based on maize or upland rice, more or less intensive and tree crops in sub humid areas of low and medium altitudes, up to m altitude.

Relations interorganismes dans leur environnement. Enumerates geographic entities where the taxon lives. Does not include altitudinal distribution, which is covered under Habitat. Occurrence Occurrence Occurrence Records.