 |
| Dichorisandra forzzae M.Pell. & Q.Moraes, in Moraes, Pellegrini et Alves‐Araújo, 2020. |
Abstract
The Dichorisandra acaulis group has its circumscription broadened to include two additional species, viz. D. oxypetala and the herein newly described D. forzzae. Dichorisandra oxypetala has previously not been included in this morphological group due to its deviant vegetative morphology. However, its reproductive morphology is congruent with the D. acaulis group and, thus, it is here included as a member of the later. Dichorisandra forzzae is here described to accommodate the specimens with anthers dehiscent through one apical pore, erroneously identified as D. acaulis in the state of Espírito Santo, Brazil. We provide illustrations, taxonomic comments and an updated identification key for the species of the D. acaulis morphological group. Furthermore, a table of comparison among the morphologically similar species of the Dichorisandra acaulis group is presented.
Keywords: Commelinales, Commelinoideae, Dichorisandrinae, Neotropics, Tradescantieae
 |
| Dichorisandra forzzae M.Pell. & Q.Moraes: (A) Habit, showing spirally alternate leaves, and terminal inflorescence. (B) Detail of the petiole. (C) Young leaves. (D) Leaf with rounded base. (E) Leaf with cuneate base. (F) Inflorescence. (G) Floral bud. (H) Front view of a bisexual flower. (I) Detail of androecium and gynoecium, showing anthers with sole apical pore. (J) Immature capsules. photos: (A)-(C), (E), (F), (H) and (I) by M.O.O. Pellegrini; (D), (G) and (J) by J. Freitas. Vouchers: (A)-(C), (E), (F), (H) and (I) from M.O.O. Pelegrini 465 (RB); (D), (G) and (J) from R.G. Barbosa-Silva 1041 (HUEFS). |
 |
| Dichorisandra forzzae M.Pell. & Q.Moraes: (A) Habit. (B) Leaf base and petiole showing indumentum. (C) Inflorescence sessile showing the cincinni. (D) Front view of a bisexual flower. (E) Detail of the androecium showing orientation of the stamens. (F) Gynoecium. (G) Immature capsule. Scale bars: (A) = 8 cm; (B) = 9 mm; (C) = 2 cm; (D) = 1.3 cm; (E) = 6.5 mm; (F) = 4.5 mm; (G) = 1.5 cm. Line drawing by J. Freitas. Vouchers: (A) from M.O.O. Pellegrini 465 (RB); (B)-(F) from Q.S.Moraes 303 (RB); (G) from R.G. Barbosa-Silva 1041 (HUEFS). |
Dichorisandra forzzae M.Pell. & Q.Moraes, sp. nov.
Quélita S. Moraes, Marco O. O. Pellegrini and Anderson Alves‐Araújo. 2020. Dichorisandra forzzae sp. nov. (Commelinaceae) from Espírito Santo State, Brazil, with notes on the Dichorisandra acaulis group. Nordic J. Botany. DOI: doi.org/10.1111/njb.02654
twitter.com/NordicJBotany/status/1311305565621170177
