Coulteria
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Ordo: Fabales
Familia: Leguminosae
Name
Coulteria Kunth, Nov. Gen. Sp. 6 ed. fol. 258 (1824), 6 ed. qu. 328. 1824 (excluding t. 568 et 569 which ≡ Tara spinosa (Molina) Britton & Rose. 1824), descr. emended E. Gagnon, Sotuyo & G. P. Lewis – Wikispecies link – Pensoft Profile
- Brasilettia sensu Britton & Rose (1930), non (DC.) Kuntze (1891).
- Guaymasia Britton & Rose (1930).
Diagnosis
Coulteria differs from Tara by its racemose inflorescences of unisexual flowers (vs. inflorescences of racemes and panicles with bisexual flowers), chartaceous to papyraceous, laterally-compressed, oblong to elliptic (occasionally suborbicular) stipitate pods, subtended by a 4–13 mm long stipe (vs. indehiscent, laterally compressed but slightly turgid and somewhat fleshy, coriaceous, straight, oblong, sessile pods), and compressed, ovate-orbicular to sub-quadrate, compressed (vs. ellipsoid) seeds.
Type
No type designated in the original publication, nor since. Type designated here: Coulteria mollis Kunth.
Emended description
Trees or shrubs, 3–20 m tall, unarmed; young twigs with a dense velvety-bronze pubescence, glabrescent. Stipules not seen. Leaves alternate, bipinnate, ending in a pair of pinnae; petiole and rachis glabrous or densely velutinous; pinnae in 2–6 pairs; leaflets in (2–) 4–12 (– 14) pairs per pinna, 0.6–8 cm long, elliptic, oblong to ovate, apex obtuse to acute, base narrow, rounded or obtuse, eglandular, glabrous to velvety pubescent; main vein centric, secondary veins brochidodromous. Inflorescence racemose, axillary or terminal, 5–16 (– 25) cm long; bracts minute, with an acute tip, pubescent, caducous. Flowers unisexual, male and female flowers on separate trees, zygomorphic; calyx comprising a hypanthium with 5 sepals, 8–10 mm long, velvety-pubescent, lower sepal cucullate, glandular-pectinate, covering the other 4 sepals in bud; petals 5, yellow, free; male flowers with 10 free stamens, filaments pubescent, eglandular. Fruit chartaceous to papyraceous, laterally-compressed, oblong to elliptic (occasionally suborbicular), indehiscent (or sometimes opening along one suture), wingless, 3–15 × 2–4 cm, with a 4–13 mm long stipe, pendulous, often persisting to next flowering season, eglandular, glabrous to densely velutinous, 1–6-seeded. Seeds ovate orbicular or sub-quadrate, compressed.
Geographic distribution
A genus of approximately seven species in Mexico and Central America, one species extending to Cuba, Jamaica and Curaçao, one to Venezuela (including Isla Margarita) and Colombia.
Habitat
Seasonally dry tropical forest, deciduous woodland and dry thorn scrub, some species occurring on limestone.
Etymology
Named by Kunth for the Irish botanist Thomas Coulter (1793–1846) who collected in central Mexico (1825–1834) and was curator of the herbarium at Trinity College, Dublin, Ireland.
Notes
A revision of the genus has been submitted by S. Sotuyo, J. L. Contreras, E. Gagnon, and G. P. Lewis. The list of species names presented here simply includes all names associated with the genus Coulteria and will be reduced in the forthcoming taxonomic account.
References
Britton and Rose (1930[1]: 320–322); Ulibarri (1996)[2]; Zamora Villalobos (2010)[3]; Sotuyo et al. (submitted)
Taxon Treatment
- Gagnon, E; Bruneau, A; Hughes, C; de Queiroz, L; Lewis, G; 2016: A new generic system for the pantropical Caesalpinia group (Leguminosae) PhytoKeys, (71): 1-160. doi
Images
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Other References
- ↑ Britton N, Rose J (1930) Caesalpiniaceae, Krameriaceae, (Rosales). North American Flora 23: 301–342.
- ↑ Ulibarri E (1996) Sinopsis de Caesalpinia y Hoffmannseggia (Leguminosae-Caesalpinioideae) de Sud América. Darwiniana 34(1–4): 299–348.
- ↑ Zamora V (2010) Fabaceae. In: Hammel B Grayum M Herrera Mora C Zamora Villalobos N (Eds) Manual de Plantas de Costa Rica. Missouri Botanical Garden, St-Louis.
