Cordioideae

Texas olive Cordia boissieri, copyright Scott Zona.

Belongs within: Boraginaceae.

The Cordia clade
Published 24 July 2021

The tropics are home to a wide diversity of plant species, many of them belonging to groups less familiar in cooler regions of the world. Prominent among these are members of the family Cordiaceae, a group of about 350 known species of mostly trees and shrubs. The Cordiaceae (alternatively treated as the subfamily Cordioideae of the family Boraginaceae) are a well distinguished clade both molecularly and morphologically. Most members of the clade have flowers with the stigma divided between four lobes, fruits with an undivided endocarp, and plicate cotyledons (Miller & Gottschling 2007).

Beach cordia Cordia subcordata, copyright Tauʻolunga.

Historically, most members of the clade have been assigned to a single genus, Cordia. This arrangement was revised by Miller & Gottschling (2007) who recognised the separate genus Varronia for about 100 species of multi-stemmed shrubs native to the New World. The remaining 250 or so species, most of them single-trunked trees, remained in the pantropical Cordia. The two genera also generally differ in their leaves (most Varronia have leaves with serrate margins whereas Cordia have entire margins) and inflorescences (most Cordia have broad cymose inflorescences whereas Varronia have smaller, more compact inflorescences). Few species of Cordiaceae are not assigned to either Cordia or Varronia. Three previously recognised small genera, Auxemma, Patagonula and Saccellium, are now synonymised with Cordia. The small African genus Hoplestigma and the prostrate annual herb Coldenia procumbens are placed in Cordiaceae primarily on the basis of molecular data (Miller & Gottschling 2007; Weigend et al. 2014).

Black sage Varronia curassavica, copyright Mauricio Mercadante.

A number of Cordia species are grown for their wood, with South American species providing timbers known as bocote, freijo (C. alliodora), and ziricote (C. dodecandra). These are only moderately strong woods but strikingly patterned and are more often used for aesthetic rather than structural purposes (such as cabinet veneers and musical instruments). Cordia alliodora has become an invasive in regions where it has been planted outside its native range such as Africa and Vanuatu. Various species are also grown for their edible fruits, such as the Assyrian plum C. myxa and the fragrant manjack C. dichotoma. These fruits are decidedly gooey when ripe and are often given names reflecting this fact such as glue berries, clammy cherries or, here in Australia, snotty gobbles (though this name is more widely used for fruits of the unrelated genus Persoonia). Pulp from unripe fruits of C. myxa can supposedly also be used as a type of glue. Your office reports may not be informative but they will at least be tasty!

Systematics of Cordioideae
<==Cordioideae [Cordiaceae]LC02
|--Patagonula americanaLC02
`--Cordia L. 1753L95
|--C. abyssinicaWC02
|--C. alliodora (R. & P.) Oken 1841 (see below for synonymy)L95
|--C. anisodontaJ87
|--C. bellonis Urban 1899 [=Varronia bellonis (Urb.) Britt. 1925]L95
|--C. boissieriBT87
|--C. borinquensis Urban 1899 [=Gerascanthus borinquensis (Urb.) Borhidi 1988]L95
|--C. collococca L. 1759 (see below for synonymy)L95
|--C. curassavicaF11
|--C. dentata Poir. in Lam. 1806 (see below for synonymy)L95
|--C. dependensJ87
|--C. dichotoma [incl. C. suaveolens]A78
|--C. dichromataPWP96
|--C. eleagnoidesBT87
|--C. gerascanthus L. 1759 (see below for synonymy)L95
|--C. gharafPP07
|--C. glabraBT87
|--C. globosa (Jacq.) HBK. 1818 [=Varronia globosa Jacq. 1760]L95
| |--C. g. var. globosaL95
| `--C. g. var. humilis (Jacq.) Johnst. 1949 (see below for synonymy)L95
|--C. interruptaB28
|--C. laevigata Lam. 1792 [=Gerascanthus laevigatus (Lam.) Borhidi 1988; incl. C. nitida Vahl in West 1793]L95
|--C. lima (Desv.) R. & S. in L. 1819 [=Varronia lima Desv. 1808]L95
|--C. macrostachyaLC02
|--C. myxaSR07
|--C. obliqua Willd. 1794 [incl. C. blancoi, C. tremula Griseb. 1861]L95
|--C. picardaeJ87
|--C. polycephala (Lam.) Johnst. 1935 (see below for synonymy)L95
|--C. rickseckeri Millsp. 1902 (see below for synonymy)L95
|--C. rotundifoliaU16
|--C. rupicola Urban 1899 [=Varronia rupicola (Urb.) Britt. 1925]L95
|--C. sebestena L. 1753 [=Sebesten sebestena (L.) Britt. ex Small 1913]L95
|--C. sonoraeHH03
|--C. stenophylla Alain 1956 (see below for synonymy)L95
|--C. subcordataLK14
|--C. sulcata DC. 1845 [=Gerascanthus sulcatus (DC.) Borhidi 1988; incl. C. macrophylla R. & S. 1810 (preoc.)]L95
|--C. trichotomaHH03
`--C. wagnerorum Howard 1966 [=Varronia wagnerorum (Howard) Borhidi 1988]L95

Cordia alliodora (R. & P.) Oken 1841 [=Cerdana alliodora R. & P. 1799, Gerascanthus alliodorus (R. & P.) Borhidi 1988; incl. Cordia gerascanthus Jacq. 1763 non L. 1759]L95

Cordia collococca L. 1759 [=Gerascanthus collococcus (L.) Borhidi 1988, Lithocardium collococca (L.) Kuntze 1891; incl. Cordia micrantha Sw. 1788]L95

Cordia dentata Poir. in Lam. 1806 [incl. Varronia alba Jac. 1760, Calyptracordia alba (Jacq.) Britt. & Wils. 1925, Cordia alba (Jacq.) Roem. & Schult. 1819, Gerascanthus albus (Jacq.) Borhidi 1988, Varronia calyptrata DC. 1845]L95

Cordia gerascanthus L. 1759 [=Cerdana gerascanthus (L.) Mold. 1933; incl. Co. gerascanthoides HBK. 1818, Gerascanthus gerascanthoides (HBK.) Borhidi 1988]L95

Cordia globosa var. humilis (Jacq.) Johnst. 1949 [=Varronia humilis Jacq. 1760, C. bullata ssp. humilis (Jacq.) Gaviria 1987, C. globosa ssp. humilis (Jacq.) Borhidi 1988]L95

Cordia polycephala (Lam.) Johnst. 1935 [=Varronia polycephala Lam. 1791; incl. Lantana corymbosa L. 1753, Cordia corymbosa (L.) Don 1838, Varronia corymbosa (L.) Desv. 1808, C. ulmifolia Juss. ex Dumont 1802]L95

Cordia rickseckeri Millsp. 1902 [=Sebesten rickseckeri (Millsp.) Britt. 1925; incl. C. sebestena brachycalyx Urb. 1899, S. brachycalyx (Urb.) Britton 1916]L95

Cordia stenophylla Alain 1956 [incl. Varronia angustifolia West ex Willd. 1797, C. angustifolia (West) R. & S. 1819 non Roxb. 1814]L95

*Type species of generic name indicated

References

[A78] Ananthakrishnan, T. N. 1978. Thrips galls and gall thrips. Zoological Survey of India, Technical Monograph 1: 1–69, 26 pls.

[BT87] Baker, E. W., & D. M. Tuttle. 1987. The false spider mites of Mexico (Tenuipalpidae: Acari). United States Department of Agriculture, Technical Bulletin 1706: 1–237.

[B28] Betrem, J. G. 1928. Monographie der Indo-Australischen Scoliiden mit zoogeographischen Betrachtungen. H. Veenman & Zonen: Wageningen.

[F11] Fraga, R. M. 2011. Family Icteridae (New World blackbirds). In: Hoyo, J. del, A. Elliott & D. A. Christie (eds) Handbook of the Birds of the World vol. 16. Tanagers to New World Blackbirds pp. 684–807. Lynx Edicions: Barcelona.

[HH03] Hernández, J. R., & J. F. Hennen. 2003. Rust fungi causing galls, witches’ brooms, and other abnormal plant growths in northwestern Argentina. Mycologia 95 (4): 728–755.

[J87] Judd, W. S. 1987. Floristic study of Morne La Visite and Pic Macaya National Parks, Haiti. Bulletin of the Florida State MuseumBiological Sciences 32 (1): 1–136.

[LC02] Långström, E., & M. W. Chase. 2002. Tribes of Boraginoideae (Boraginaceae) and placement of Antiphytum, Echiochilon, Ogastemma and Sericostoma: a phylogenetic analysis based on atpB plastid DNA sequence data. Plant Systematics and Evolution 234: 137–153.

[L95] Liogier, H. A. 1995. Descriptive Flora of Puerto Rico and Adjacent Islands: Spermatophyta-Dicotyledoneae vol. 4. Melastomataceae to Lentibulariaceae. Editorial de la Universidad de Puerto Rico.

[LK14] Lyons, M. N., G. J. Keighery, L. A. Gibson & T. Handasyde. 2014. Flora and vegetation communities of selected islands off the Kimberley coast of Western Australia. Records of the Western Australian Museum Supplement 81: 205–244.

Miller, J. S., & M. Gottschling. 2007. Generic classification in the Cordiaceae (Boraginales): resurrection of the genus Varronia P. Br. Taxon 56 (1): 163–169.

[PWP96] Palmer, W. A., B. W. Willson & K. R. Pullen. 1996. The host range of Aconophora compressa Walker (Homoptera: Membracidae): a potential biological control agent for Lantana camara L. (Verbenaceae). Proceedings of the Entomological Society of Washington 98 (4): 617–624.

[PP07] Pandey, R. P., & P. M. Padhye. 2007. Studies on phytodiversity of Arid Machia Safari Park-Kailana in Jodhpur (Rajasthan). Bulletin of the Botanical Survey of India 49: 15–78.

[SR07] Sankar, R. V., K. Ravikumar, N. M. Ganesh Babu & D. K. Ved. 2007. Botany of Anapady MPCA, Palghat district, Kerala with special emphasis on species of conservation concern. Bulletin of the Botanical Survey of India 49: 165–172.

[U16] Ulbrich, E. 1916. Malvaceae andinae novae vel criticae imprimis Weberbauerianae. II. Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 54 (Beiblatt 117): 48–77.

Weigend, M., F. Luebert, M. Gottschling, T. L. P. Couvreur, H. H. Hilger & J. S. Miller. 2014. From capsules to nutlets—phylogenetic relationships in the Boraginales. Cladistics 30: 508–518.

[WC02] Winkler, H., & D. A. Christie. 2002. Family Picidae (woodpeckers). In: Hoyo, J. del, A. Elliott & J. Sargatal (eds) Handbook of the Birds of the World vol. 7. Jacamars to Woodpeckers pp. 296–555. Lynx Edicions: Barcelona.

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