Callicarpa longifolia Lam.

First published in Encycl. 1: 563 (1785)
This species is accepted
The native range of this species is Tropical & Subtropical Asia to Queensland. It is a shrub or tree and grows primarily in the wet tropical biome.

Descriptions

Bramley, G.L.C. 2013. The genus Callicarpa (Lamiaceae) in the Philippines. Kew Bulletin 68: 369. https://doi.org/10.1007/s12225-013-9456-y

Type
Type: Malacca, Sonnerat s.n. (holotype P-LA, microfiche).
Morphology General Habit
Shrub to 6 m, occasionally scrambling over other vegetation, diam. 1 – 3 cm
Morphology Stem
Stems with a mealy indumentum of branched hairs, also with yellow sessile glands, usually becoming woodier and ± glabrous as they mature, a conspicuous interpetiolar ridge resembling a stipule scar present
Morphology Leaves
Leaves opposite, occasionally pairs subequal, petiolate blades elliptic to narrowly ovate, 7 – 20 × 3 – 6 cm, margins serrate, apex acuminate, base acute to shortly attenuate, upper surface with scattered branched hairs and yellow sessile glands, lower surface with an indumentum of stellate or short branched hairs close to the surface, especially dense on the midrib and venation, all of which is raised, also with numerous yellow sessile glands petioles 10 – 25 mm, indumentum as stems
Morphology Reproductive morphology Inflorescences
Inflorescence axillary, peduncles 5 – 10 mm long, indumentum as stem bracts linear, 0.5 – 2 mm long pedicels c. 0.5 mm long, indumentum as stems bracteoles linear, less than 1 mm long, inconspicuous
Morphology Reproductive morphology Flowers Calyx
Calyx narrow funnel shape, c. 1 mm long with 4 shallow lobes marked with thickened tips, outer surface with stellate or short branched hairs, also with yellow sessile glands and occasional peltate scales, inner surface ± glabrous
Morphology Reproductive morphology Flowers Corolla
Corolla pale pink to lilac, c. 2 – 2.5 mm long, divided into 4 lobes 0.5 – 0.75 mm long, outer surface with appressed branched hairs, the edges of the lobes with papillae, also with yellow sessile glands, inner surface ± glabrous
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4 exserted for 2 – 3 mm, arising 0.25 – 0.5 mm from the base of the corolla tube, anthers 0.5 – 1 mm long with numerous yellow sessile glands where they attach to the connective, with a pore like opening at the apex then splitting longitudinally towards the base as anther matures
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma capitate, c. 1 mm wide, surface glandular
Morphology Reproductive morphology Fruits
Fruit green, maturing white, 2 – 3 mm wide when mature (on dry specimen), outer surface glandular, subtended by reduced calyx most of which has broken away 4 1-seeded locules breaking up into 4 1-seeded pyrenes.
Distribution
India, Indo-China, Malesia and northern Australia. Only reaching as far north as Catanduanes in the Philippines. Map 4.
Conservation
Least concern (LC) across its distribution.
Ecology
Secondary forest and disturbed areas such as roadsides or open patches in primary forest  0 – 1200 m.
Note
Callicarpa nigrescens is newly treated as a synonym here. When Merrill (1926) described C. nigrescens, he suggested it was allied to C. candicans because of its characteristically black or dark colour on drying. However C. nigrescens does not share with C. candicans the pale indumentum which causes the upper surface of its leaves to appear discolorous: in C. nigrescens both leaf surfaces dry a dark colour. Merrill (1926) noted that using Bakhuizen’s arrangement of the species, C. nigrescens would fall near C. longifolia, but he rejects this relationship. C. longifolia is common in Sabah, and is the only other species of Callicarpa recorded from Tawi Tawi Island. C. nigrescens differs from it by the dark colour of its leaves on drying, and a lack of visible venation on the lower leaf surface, and an inflorescence that is not as laxly branched. Given the lack of distinguishing features, I am recognising it as conspecific with C. longifolia here. Callicarpa longifolia is a widespread species variable across its distribution, especially in its indumentum. It is especially common in Sundaland and New Guinea, but comparatively rare in the Philippines.
[KBu]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/145370492/145370494

Conservation
LC - least concern
[IUCN]

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0
  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/
  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Bulletin

    • Kew Bulletin
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0