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Wednesday, July 23rd, 2025
| Time | Event | ||||||||
| 9:11a | [Botany • 2025] Homalomena pistioides (Araceae) • A New small-sized lithophytic Species of Sumatran Aroid
Abstract Homalomena pistioides A.S.D.Irsyam, M.R.Hariri & Raynalta represents a recently identified species within the Aroid family, hailing from the region of Sumatra, Indonesia. The newly identified species is a lithophytic plant distinguished by its rosette leaf arrangement, short petiole, obovate leaf blade, spongy leaf texture, erect-spreading inflorescence, and slender peduncle. The species is promoted by Sumatran horticulturists and enthusiasts as Homalomena “Dolphin” on social media. Keywords: Araceae, Homalomeneae, Ornamental, Sumatra  Homalomena pistioides A.S.D.Irsyam, M.R.Hariri & Raynalta Etymology: The nomenclature originates from Pistia, which is a genus within the family of aquatic aroids, combined with the suffix -oides, signifying a likeness or resemblance. The observation pertains to the similarity in the leaf morphology of the newly identified species to that of Pistia stratiotes L. Arifin S.D. Irsyam, Iin P.A. Husaini, Erick Raynalta and Muhammad R. Hariri. 2025. Homalomena pistioides: A New small-sized lithophytic Species of Sumatran Aroid. Webbia: Journal of Plant Taxonomy and Geography. 80(1); 95-98. DOI: doi.org/10.36253/jopt-16710 [2025-04-17] Herbarium Bandungense of SITH ITB Collaborates with BRIN, Uncovers Six New Species of Indonesian Endemic Plants | ||||||||
| 9:42a | [Botany • 2025] Homalomena amarii (Araceae) • Jewels of the Water: unveiling A New iridescent rheophytic Homalomena from North Sumatra, Indonesia
A new species, Homalomena amarii (Araceae), is described from North Sumatra, Indonesia. This rheophytic herb occurs in rock crevices along the banks of slow-moving rivers at low elevations. Notably, this species has been commercially traded on social media under the horticultural name Homalomena "Blue Metallic," owing to its distinctive blue-iridescent adaxial leaf surface.  Homalomena amarii A.S.D.Irsyam & M.R.Hariri Homalomena "Blue Metallic" Muhammad Rifqi HARIRI and Arifin Surya Dwipa IRSYAM. 2025. Jewels of the Water: unveiling A New iridescent rheophytic Homalomena (Araceae) from North Sumatra, Indonesia. Phytotaxa. 708(1); 99-102. DOI: doi.org/10.11646/phytotaxa.708.1.10 [2025-07-02] Herbarium Bandungense of SITH ITB Collaborates with BRIN, Uncovers Six New Species of Indonesian Endemic Plants | ||||||||
| 10:01a | [Botany • 2025] Homalomena chikmawatiae (Araceae) • A New Species from Riau, Sumatra
Abstract The genus Furtadoa M. Hotta (Araceae) is reviewed, with its morphological characteristics compared to those of Homalomena Schott, and its molecular phylogenetic position analyzed in relation to other Homalomena species. A comparative assessment of molecular data supports the reclassification of Furtadoa within Homalomena, resulting in the establishment of two new combinations. Two species names are changed: H. indrae for F. indrae and H. sumatrensis for F. sumatrensis. In this paper, we also describe a new species of ‘Furtadoa-like’ Homalomena from Riau, Sumatra, H. chikmawatiae A.S.D.Irsyam & M.R.Hariri. This new species is readily identified by its peltate leaves and large sterile appendix at the spadix. Keywords: Aroid, Sumatra, Homalomena, internal transcribed spacer, Malesia
Homalomena chikmawatiae A.S.D.Irsyam & M.R.Hariri, sp. nov. Diagnosis: Homalomena chikmawatiae is readily distinguishable from other Homalomena species with ‘Furtadoa-type’ spadices by its clearly peltate leaves and the conspicuous sterile appendix at the upper 2/5 of the spadix. Arifin S.D. Irsyam, Erick Raynalta and Muhammad R. Hariri. 2025. Nomenclatural Changes and Bew Species in Malesian Homalomena (Araceae). Webbia: Journal of Plant Taxonomy and Geography. 80(1); 99-104. DOI: doi.org/10.36253/jopt-17033 [2025-04-17] Herbarium Bandungense of SITH ITB Collaborates with BRIN, Uncovers Six New Species of Indonesian Endemic Plants | ||||||||
| 2:25p | [Botany • 2025] Primula jiangyouensis (Primulaceae) • A New Species from Sichuan, China
Abstract Primula jiangyouensis J.L.Gu & Z.K.Wu, a new species of Primulaceae from Sichuan, China, is described and illustrated. Morphological evidence supports P. jiangyouensis as a member of P. sect. Auganthus, which is characterized by shallowly to deeply lobed leaves covered with hairs, and distinctively broad and flat-bottomed calyx. The new species is characterized by its branched and stout rhizomes usually up to 40 cm, yellow corollas with a distinct fan-shaped reddish-brown blotch at the base of lobes, and short glandular hair on aboveground parts. The distribution, morphological comparison with close related species and conservation status of the new species, as well as a key to the species of Primula sect. Auganthus, are also provided. Key words: Conservation status, diversity, jiang you bao chun, taxonomy
Primula jiangyouensis J.L.Gu & Z.K.Wu, sp. nov. Diagnosis. The new species is most similar to P. sinensis, P. rupestris, and P. xingshanensis, sharing hairs that covered the leaves and stems, lobed leaf blade, distinctly petiole and distinctively broad and flat-bottomed calyx. However, the new species is distinguished from the latter three mainly by its branched and stout rhizomes usually up to 40 cm, yellow corollas with a distinct fan-shaped reddish-brown blotch at the base of lobes, and short glandular hair on aboveground parts (Figs 1–4). The main morphological distinctions between P. jiangyouensis, P. sinensis, P. rupestris, and P. xingshanensis are summarized in Table 1. ... Jiu-Lin Gu, Hua-Dong Wang, Hong-Qiang Lin, Xiao-Qi Jiang, Tian Shuai and Zhi-Kun Wu. 2025. Primula jiangyouensis (Primulaceae), A New Species of Primula sect. Auganthus from Sichuan, China. PhytoKeys. 260: 25-35. DOI: doi.org/10.3897/phytokeys.260.158039 | ||||||||
| 4:13p | [Paleontology • 2025] Mirasaura grauvogeli • Triassic Diapsid shows early Diversification of Skin Appendages in Reptiles
Abstract Complex integumentary appendages such as avian feathers and mammalian hair play a principal role in tetrapod evolution, with critical functions in insulation, sensation, display and flight. Although feathers and hair originated in the stem-lineages of birds and mammals, respectively, their underlying gene regulatory network has much deeper amniote roots. The early evolution of amniote integumentary appendages, however, remains poorly understood because of the absence of fossil evidence. Here we present Mirasaura grauvogeli, a small-sized diapsid from the Middle Triassic epoch (about 247 million years ago) with a distinctive crest formed by elongate integumentary appendages extending serially along its back, similar to those of the poorly understood Triassic reptile Longisquama. Despite its superficially bird-like skull, Mirasaura is not closely related to avemetatarsalians but instead belongs to the exclusively Triassic reptilian clade Drepanosauromorpha. Melanosomes preserved in its integumentary appendages are consistent in geometry with melanosomes of feathers but not those of reptilian skin or mammalian hair. Nevertheless, the morphology of the integumentary appendages and phylogenetic placement of Mirasaura indicate that they are not structurally homologous to feathers or other integumentary appendages in living amniotes. Our findings show that complex integumentary appendages are not restricted to avemetatarsalians and mammaliaforms among amniotes and evolved in a lineage basal to all extant reptiles, challenging our understanding of the evolution of the reptilian integument. Systematic palaeontology Diapsida Osborn, 1903 Drepanosauromorpha Renesto, Spielmann, Lucas & Spagnoli, 2010
Mirasaura grauvogeli gen. et sp. nov. Etymology. mirus (Latin): wonderful or marvellous; saura (Latin): reptile. The species name honours Louis Grauvogel, who extensively excavated the Grès à Voltzia localities and discovered Mirasaura. Holotype. SMNS 97278 (Staatliches Museum für Naturkunde Stuttgart, Germany), an articulated skull and poorly preserved postcranium, including a largely complete crest. Locality and horizon. Lower unit (Grès à meules) of the Grès à Voltzia Formation (early Anisian, early Middle Triassic), Vosges mountains, eastern France, (see Supplementary Information for geological context). Diagnosis. Mirasaura grauvogeli is a drepanosauromorph distinguished by the following combination of character states (autapomorphies among non-saurian diapsids are marked with an asterisk*): elongate integumentary appendages extending dorsally from the anterior part of the trunk; long, narrow snout; dome-like skull roof; anterior portions of the jaws completely edentulous*; dorsoventrally low maxilla; frontal strongly constricted anteriorly; forward-facing orbits; transversely wide parietal; elongate, barrel-shaped trunk; seven cervical vertebrae; 24 dorsal vertebrae*; hypapophyses on cervical vertebrae; cervical ribs and gastralia absent; moderately elongate caudal haemal spines; narrow and elongate scapular blade; carpals lacking proximal elongation; ilium with tall, anterodorsally oriented blade; and large, curved pedal unguals.  Stephan N. F. Spiekman, Christian Foth, Valentina Rossi, Cristina Gascó Martín, Tiffany S. Slater, Orla G. Bath Enright, Kathleen N. Dollman, Giovanni Serafini, Dieter Seegis, Léa Grauvogel-Stamm, Maria E. McNamara, Hans-Dieter Sues and Rainer R. Schoch. 2025. Triassic Diapsid shows early Diversification of Skin Appendages in Reptiles. Nature. DOI: doi.org/10.1038/s41586-025-09167-9 [23 July 2025]  |
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