Editing Coffea liberica

{| class="wikitable" style="float: right; width: 320px; margin-left: 1.25em; margin-bottom: 1em;"
! colspan="2" style="background: #e8e8e8;" | Liberica coffee (''Coffea liberica'')
|-
! Scientific name
| ''Coffea liberica''
|-
! Common names
| Liberica coffee; Liberian coffee
|-
! Genus
| [[Coffea]]
|-
! Family
| [[Rubiaceae]]
|-
! Order
| [[Gentianales]]
|-
! Native climate
| Warm, wet tropical conditions; a pronounced dry season occurs in part of the indigenous range
|}

''Coffea liberica'' is a coffee species in the family Rubiaceae, commonly grown as Liberica coffee or Liberian coffee. A 2025 genomic and morphological study supported treating ''C. liberica'', ''C. dewevrei'' (the species often associated with the name excelsa), and ''C. klainei'' as separate species, differing from older treatments that placed some of these plants as varieties.<sup id="cite_ref-1">[[#cite_note-1|[1]]]</sup> GBIF currently returns ''C. liberica'' as the accepted species match used for the canonical title.<sup id="cite_ref-2">[[#cite_note-2|[2]]]</sup>

== Description ==

The 2025 study measured ''C. liberica'' fruit as spherical to ellipsoid, with a principal reported range of 1.8–3.4 cm long and 1.7–3.3 cm wide. The mesocarp was 4–9.5 mm thick, and the seeds measured 9.5–18.3 × 6.5–12 mm in the sampled material.<sup>[[#cite_note-1|[1]]]</sup> These measurements describe the study material rather than a fixed value for every cultivated tree.

The species' indigenous climate profile in that study had a modelled mean annual temperature of 24.6 °C and mean annual precipitation of 2,215 mm. The model is an ecological benchmark, not a tested hardiness boundary or an irrigation prescription.<sup>[[#cite_note-1|[1]]]</sup>

== Cultivation ==

=== Soil and water ===

Warm, wet conditions are central to the documented ecology of ''C. liberica''. The 2025 cultivation comparison places Liberica mainly at 10–500 m in warm or hot conditions of about 24–27 °C and rainfall of roughly 2,000–4,000 mm in cultivated areas of Malaysia, the Philippines, and Indonesia.<sup>[[#cite_note-1|[1]]]</sup> Use these figures as climate context rather than as a universal schedule: provide regular moisture during active growth, and treat drainage and the local dry season as practical management constraints.

A historical West Indies account kept a weed-free space of about 2–3 feet around each tree. That practice is useful for reducing competition during establishment, but the account was site-specific and does not establish a modern spacing standard.<sup>[[#cite_note-3|[3]]]</sup>

=== Sun and humidity ===

''Coffea liberica'' is associated with warm tropical growing conditions, and cultivated stands in the 2025 comparison were in warm or hot regions.<sup>[[#cite_note-1|[1]]]</sup> Young plants should be acclimated rather than moved abruptly from protected nursery conditions into intense exposure. A historical Liberian-coffee cultivation account describes hardening seedlings before planting and separately discusses protection from the sun; those practices are historical guidance, not a controlled modern shade trial.<sup>[[#cite_note-3|[3]]]</sup>

=== Seasonal changes ===

The indigenous climate profile includes a longer, more severe dry season in the upper-West-African range, while the study describes flowering and fruiting throughout the year in several cultivated regions.<sup>[[#cite_note-1|[1]]]</sup> In warm climates, keep the root zone supplied through pronounced dry periods when continued growth and fruiting are desired. The observed year-round pattern should not be read as a guarantee of continuous flowering in every site; the authors call for multilocation field trials before treating the climate comparison as a production limit.<sup>[[#cite_note-1|[1]]]</sup>

== Propagation ==

Liberica coffee is propagated from seed in the historical cultivation account. Seed was sown about 1–1.5 inches deep and 3–4 inches apart; seedlings were hardened after developing two or three pairs of leaves, then planted out with the roots covered while the true stem was not buried.<sup id="cite_ref-3">[[#cite_note-3|[3]]]</sup> The account describes a particular West Indies practice rather than a universal germination protocol, so depth and transplant timing should be adapted to the seed lot and growing conditions.

The same account planted trees 10 feet apart in rows 10 feet apart at St. Aroment, but explicitly noted that the proper distance had not been satisfactorily determined.<sup>[[#cite_note-3|[3]]]</sup> That historical spacing is best treated as a documented plantation example, not a fixed recommendation for modern orchards or containers.

== Flowering, fruiting, and harvest ==

The 2025 study reports flowering and fruiting throughout the year in several cultivated regions, while also distinguishing that observation from the modelled indigenous climate profile.<sup id="cite_ref-4">[[#cite_note-4|[4]]]</sup> Timing will therefore vary with climate, moisture, and plant establishment; a single annual harvest calendar should not be assumed from the species name alone.

The measured fruits were spherical to ellipsoid and varied across the sampled material in both size and mesocarp thickness.<sup>[[#cite_note-1|[1]]]</sup> Harvest and postharvest timing should be determined from local fruit development and processing practice rather than transferred from another coffee species.

== Fruit and uses ==

The species is cultivated for coffee. Liberica coffee has a long cultivation history in the West Indies, and renewed interest in Liberica coffee as a crop has been linked to crop-development and supply-chain work, although the modern literature also emphasizes the importance of choosing suitable material for cultivation.<sup id="cite_ref-5">[[#cite_note-5|[5]]]</sup> The historical account includes discussion of pulping equipment and the flavour of Liberian coffee, but its processing observations are specific to the period and plantation context.<sup>[[#cite_note-3|[3]]]</sup>

== References ==

* <span id="cite_note-1"></span>[[#cite_ref-1|↑]] '''[1]''' [https://pmc.ncbi.nlm.nih.gov/articles/PMC12449269/ Davis, A.P., Shepherd-Clowes, A., Lee, K.W.T. et al. (2025), “Genomic data define species delimitation in Liberica coffee with implications for crop development and conservation”, ''Nature Plants'']. 

* <span id="cite_note-2"></span>[[#cite_ref-2|↑]] '''[2]''' [https://api.gbif.org/v1/species/match?name=Coffea%20liberica GBIF species match: ''Coffea liberica'']. 

* <span id="cite_note-3"></span>[[#cite_ref-3|↑]] '''[3]''' [https://archive.org/download/oncultivationli00nichgoog/oncultivationli00nichgoog_djvu.txt Nicholls, H.A. Alford (1881), ''On the Cultivation of Liberian Coffee in the West Indies'']. 

* <span id="cite_note-4"></span>[[#cite_ref-4|↑]] '''[4]''' [https://pmc.ncbi.nlm.nih.gov/articles/PMC12449269/ Davis, A.P., Shepherd-Clowes, A., Lee, K.W.T. et al. (2025), cultivation comparison and phenology discussion in “Genomic data define species delimitation in Liberica coffee with implications for crop development and conservation”.] 

* <span id="cite_note-5"></span>[[#cite_ref-5|↑]] '''[5]''' [https://www.nature.com/articles/s41477-022-01309-5 Davis, A.P. et al. (2022), “The re-emergence of Liberica coffee as a major crop plant”, ''Nature Plants''; abstract and publisher preview].

[[Category:Coffea]]
[[Category:Coffee]]