Zollernia paraensis Huber

Vidal de Freitas Mansano, Ana Maria Goulart de Azevedo Tozzi, & Lewis, G. (2004). A Revision of the South American Genus Zollernia Wied-Neuw. & Nees (Leguminosae, Papilionoideae, Swartzieae). Kew Bulletin, 59(4), 497-520. doi:10.2307/4110905

Type

Brazil, Pará, Via férrea entre Belém e Bragança, R. Siqueira s.n. (MG 8804! holotype; BM!, F!, G!, K! isotypes).

Morphology General Habit

Tree c. 30 m tall

Morphology Leaves Stipules

Stipules caducous, not seen; petiole 6.5 - 8.5 mm long, glabrous; leaf blade 8 - 10.5 x 2.7 - 3.6 cm, elliptic to ovate, chartaceous, glabrous, base cuneate, apex mucronate, venation prominent beneath

Morphology Reproductive morphology Inflorescences

Racemes generally solitary, 5.2 - 7.5 cm (- 26 cm) long, axillary, straight, raceme axis c. 1 mm in diam., sparsely fulvous- tomentose, hairs brownish, c. 16 - 20 flowers per raceme; bracts c. 0.7 - 11 x 0.4 - 0.6 mm, deltoid, sparsely fulvous-tomentose; bracteoles 0.7 x 0.4 mm, deltoid, sparsely fulvous-tomentose, attached to upper half of the pedicel or at the base of the calyx; pedicel 3.9 - 5 mm long, densely fulvous-tomentose; buds 8.7 - 9 x 2 - 3.4 mm, ovate-asymmetric, apex acuminate, base acute, densely fulvous-tomentose

Morphology Reproductive morphology Flowers

Calyx spathaceous, 1-lobed, chartaceous, internal surface glabrous at base and pilose at apex; petals pink, 5, claw 0.8 - 1.2 x 0.4 - 0.7 mm, blade 4.7 - 5.2 x 2.7 - 3.4 mm, elliptic; stamens 10, filaments c. 1.9 x 0.2 mm, glabrous, anthers c. 5.3 x 0.4 mm, subulate, glabrous; gynoecium with stipe c. 2 mm long, sericeous, ovary 3.2 - 3.4 x 1.2 - 1.5 mm, narrow-elliptic, sericeous, c. 8-ovulate, style 2.8 - 4.4 mm long, incurved, glabrous, stigma punctiform, glabrous

Morphology Reproductive morphology Fruits

Fruit globose, c. 3.4 x 2.1 cm, 1 - 3-seeded.

Distribution

Zollernia paraensis is a widely distributed species which is more frequent in the non-inundated areas of Amazonia, but also occurs in dense forest in the states of Ceará and Maranhão.

Ecology

It is a species of the "Floresta Pluvial Tropical de Terra Firme", in regions that are either always wet, or have a short dry season

Phenology

Flowering from April to September, fruiting from November to February.

Vernacular

Pau-santo (Pará) and orelha-de- negro (Mato Grosso).

Note

An important diagnostic character of Zollernia paraensis, not included in any previous work, is the difference in the colour and type of indumentum between the inflorescence axis and the pedicel. The inflorescence axis presents a sparsely tomentose, brown indumentum, while the pedicel is densely fulvous-tomentose. Z. paraensis also differs from all other species of the genus by its caducous stipules. We agree with the synonymisation of Zollernia ulei Harms, proposed by Yakovlev (1976).

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

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/19891833/20165073

Conservation

LC - least concern