Pontederia subg. Oshunae M.Pell. & C.N.Horn, 2018

Pellegrini, Marco O. O., Horn, Charles N. & Almeida, Rafael F., 2018, Total evidence phylogeny of Pontederiaceae (Commelinales) sheds light on the necessity of its recircumscription and synopsis of Pontederia L., PhytoKeys 108, pp. 25-83 : 25

publication ID

https://dx.doi.org/10.3897/phytokeys.108.27652

persistent identifier

https://treatment.plazi.org/id/818F6266-4FCA-A717-1AA6-5EBF82AAFDC9

treatment provided by

PhytoKeys by Pensoft

scientific name

Pontederia subg. Oshunae M.Pell. & C.N.Horn
status

subg. nov.

3. Pontederia subg. Oshunae M.Pell. & C.N.Horn subg. nov. Fig. 7 View Figure 7

Piaropus Raf., Fl. Tellur. 2: 81. 1837, nom. rej. Type species. Piaropus mesomelas Raf., nom. illeg. (≡ Pontederia crassipes Mart.). Syn. nov.

Type species.

Pontederia crassipes Mart. [≡ Eichhornia crassipes (Mart.) Solms].

Description.

Herbs perennial, aquatic, free-floating. Rhizome short and inconspicuous. Stems inconspicuous, unbranched, producing stolons. Sessile leaves early deciduous. Petiolate leaves spirally-alternate, congested at the apex of the stem, emergent, ligule flabellate, petioles inflated, blades broadly ovate to cordate to reniform. Main florescences (inflorescences) terminal; inflorescence leaf without an inflated leaf-sheath; basal bract tubular; cincinni alternate, 1(-2)-flowered, sessile, internodes contracted. Flowers sessile, tristylous, zygomorphic, non-enantiostylous, perianth connate forming a tube, hypocrateriform, spirally-coiled at post-anthesis, deliquescent and loosely enclosing the developing fruit, 3 superior and 3 inferior, the central superior lobe with a nectar guide, consisting of 1 yellow spot, surrounded by a dark purple to bluish-purple blur; stamens dimorphic, filaments free from each other, J-shaped, glandular-pubescent, anthers dorsifixed, rimose; ovary with 3 fertile locules, multi-ovulate, septal nectaries present, style glandular-pubescent, stigma capitate to trilobate. Capsules loculicidal, oblongoid; anthocarp thin, smooth. Seeds oblongoid, testa longitudinally winged.

Circumscription.

Pontederia subg. Oshunae is monospecific, being composed solely by P. crassipes .

Distribution.

Widespread throughout South America.

Etymology.

The name of this new subgenus derives from the Yoruba words “Oxum”, “Oshun” and “Osun”. These are the names given in the Candomblé religion to the orisha (i.e. a deity that reflects one of the manifestations of God) mother and guardian of freshwater bodies. Oshun is known for her beauty and vanity, being also known as the deity of luxury, pleasure, sexuality, fertility, beauty and love. The sole species accepted in Pontederia subg. Oshunae is commonly named " mãe d’água " (i.e. mother of the freshwaters) in Brazil, also one of the popular names for Oshun . This popular name in Brazil makes reference to the water-hyacinth’s ability to dominate freshwater environments, as well as its ability to produce beautiful flowers.

Kingdom

Plantae

Phylum

Tracheophyta

Class

Liliopsida

Order

Commelinales

Family

Pontederiaceae

Genus

Pontederia

Loc

Pontederia subg. Oshunae M.Pell. & C.N.Horn

Pellegrini, Marco O. O., Horn, Charles N. & Almeida, Rafael F. 2018
2018
Loc

Piaropus

Rafinesque 1837
1837
Loc

Piaropus mesomelas

Raf 1837
1837