https://phytotaxa.mapress.com/pt/issue/feed Phytotaxa 2023-06-07T14:05:11+12:00 Zhi-Qiang Zhang zhangz@landcareresearch.co.nz Open Journal Systems <p><strong>Phytotaxa </strong>is world's largest journal in botanical taxonomy. </p> https://phytotaxa.mapress.com/pt/article/view/phytotaxa.599.3.1 <p><strong><em>Spiranthes minamitaniana</em> (Orchidaceae), a new orchid species from Japan based on morphological and phylogenetic data</strong></p> 2023-06-07T10:54:00+12:00 KENJI SUETSUGU kenji.suetsugu@gmail.com SHUN K HIROTA shun.hirota@gmail.com YOSHIHISA SUYAMA suyama@tohoku.ac.jp <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">The delimitation of species within the genus</span><span lang="en-GB"><em> Spiranthes </em></span><span lang="en-GB">(Orchidaceae)</span> <span lang="en-GB">is problematic due to the intricate interplay of phenotypic plasticity, ecological variation, and hybridization, making identification that relies solely on morphology inadequate. In light of morphological and phylogenetic data, we have described a self-pollinating species, </span><span lang="en-GB"><em>S. minamitaniana</em></span><span lang="en-GB"> within the </span><span lang="en-GB"><em>Spiranthes sinensis </em></span><span lang="en-GB">species complex. </span><span lang="en-GB"><em>Spiranthes minamitaniana </em></span><span lang="en-GB">shares several morphological features with </span><span lang="en-GB"><em>S. hachijoensis</em></span><span lang="en-GB">, such as glabrous inflorescence rachis, ovaries, and sepals, a degenerated rostellum, pollinia without a viscidium, and papillate lip basal callosities. However, it can be distinguished by several morphological traits, including semicircular, weakly- or non-3-lobed stigma, and more conspicuous anther cap. Although </span><span lang="en-GB"><em>S. minamitaniana</em></span><span lang="en-GB"> is morphologically most similar to </span><span lang="en-GB"><em>S. hachijoensis</em></span><span lang="en-GB">, phylogenetic analysis strongly suggested that </span><span lang="en-GB"><em>S. minamitaniana</em></span><span lang="en-GB"> has independently acquired a selfing reproductive mode and constitutes a separate genetic cluster from it.</span> <span lang="en-GB">As such, this taxon is morphologically and phylogenetically distinct from other closely related species. Consequently, this taxon is morphologically and phylogenetically distinct from other closely related species. </span></span></span></span></p> 2023-06-07T00:00:00+12:00 Copyright (c) 2023 Phytotaxa https://phytotaxa.mapress.com/pt/article/view/phytotaxa.599.3.2 <p><strong><em>Pleurothallis pugio</em> (Orchidaceae), a new Pleurothallidinae from Costa Rica</strong></p> 2023-06-07T10:54:01+12:00 ADAM P. KARREMANS adam.karremans@ucr.ac.cr JOSÉ ESTEBAN JIMÉNEZ gaiadendron.jej@gmail.com <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">A new species of </span><span lang="en-GB"><em>Pleurothallis</em></span><span lang="en-GB"> is described from Ciudad Quesada in Costa Rica. The novelty belongs to </span><span lang="en-GB"><em>Pleurothallis</em></span><span lang="en-GB"> series </span><span lang="en-GB"><em>Acroniae</em></span><span lang="en-GB"> Luer, having a close floral affinity with </span><span lang="en-GB"><em>P. dentipetala</em></span><span lang="en-GB"> and </span><span lang="en-GB"><em>P. rowleei</em></span><span lang="en-GB">, from which it can be easily distinguished by the two-flowered inflorescence branches, bearing tiny yellow flowers with ovate-lanceolate, undulate dorsal sepal, decurved, oblong-lanceolate, dagger-like petals, and an ovate lip. </span><span lang="en-GB"><em>Pleurothallis pugio</em></span><span lang="en-GB"> is reminiscent of </span><span lang="en-GB"><em>P. imitor</em></span><span lang="en-GB">, a species which also has two-flowered branches bearing yellow flowers. However, the latter is only known to occur in Monteverde Reserve at higher elevations, and differs in the petals that are only slightly decurved, with an entire margin, the sepals that are elliptic, and the lip that is triangular-sagittate.</span></span></span></span></p> 2023-06-07T00:00:00+12:00 Copyright (c) 2023 Phytotaxa https://phytotaxa.mapress.com/pt/article/view/phytotaxa.599.3.3 <p><strong>Novelties in <em>Macrolobium</em> (Detarioideae, Fabaceae) for Northern South America: Two new species and new chorological records from Colombia and Ecuador</strong></p> 2023-06-07T10:54:03+12:00 ANA MARÍA TRUJILLO-LÓPEZ amtrujillol@unal.edu.co YEISON LONDOÑO-ECHEVERRI ylondono@unal.edu.co <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Two new species from Colombia are described and illustrated, </span><span lang="en-GB"><em>Macrolobium ceriferum</em></span><span lang="en-GB"> from the Pacific biogeographical region and </span><span lang="en-GB"><em>Macrolobium longistipitatum</em></span><span lang="en-GB"> from limits between Andes and Magdalena Valley biogeographical regions</span><span lang="en-GB"><em>. </em></span><span lang="en-GB">Notes about their distribution, phenology, conservation status and taxonomic affinities are provided. </span><span lang="en-GB"><em>Macrolobium ceriferum</em></span><span lang="en-GB"> differs from morphologically similar species mainly by its leaflet blades discolorous and bullate, whitish abaxially, its smaller inflorescence axis and flowers, its filaments glabrous and presence of conspicuous scaly wax in the surface of the inflorescence axis, pedicel, bracteoles and sepals. </span><span lang="en-GB"><em>Macrolobium longistipitatum</em></span><span lang="en-GB"> differs from morphologically similar species mainly by its leaves with numerous leaflets, each with veins raised up the fourth-order on both surfaces, longer (sub-) terminal inflorescences, hypanthium cupular with longer stipe, sepals 4, slightly unequal in shape and size and ovary glabrous. The latter is the first record of </span><span lang="en-GB"><em>Macrolobium</em></span><span lang="en-GB"> sect. </span><span lang="en-GB"><em>Macrolobium</em></span><span lang="en-GB"> from the Inter-Andean Valleys of the northern Andes. Additionally, based in new chorological records of </span><span lang="en-GB"><em>Macrolobium machaerioides</em></span><span lang="en-GB"> from Colombia and Ecuador, its currently known geographical distribution are presented, along to an emended description of its fruits morphology, which is hitherto unknown.</span></span></span></span></p> 2023-06-07T00:00:00+12:00 Copyright (c) 2023 Phytotaxa https://phytotaxa.mapress.com/pt/article/view/phytotaxa.599.3.4 <p><strong>Two new species of <em>Timonius</em> (Rubiaceae: Guettardeae) from the Malay Peninsula</strong></p> 2023-06-07T10:54:04+12:00 PUI KIAT HOO puikiatben@gmail.com MANICKAM SUGUMARAN sugumaran.m@gmail.com KHOON MENG WONG wkm2000@gmail.com <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Two new species of </span><span lang="en-GB"><em>Timonius </em></span><span lang="en-GB">endemic to the Malay Peninsula are described and illustrated: </span><span lang="en-GB"><em>T. megalocalyx </em></span><span lang="en-GB">and </span><span lang="en-GB"><em>T. denigricans</em></span><span lang="en-GB">, and their distribution and ecology discussed. Both species have been thought to be conspecific with their most resembling taxa in a previous revision but are here shown to be distinct. </span></span></span></span></p> 2023-06-07T00:00:00+12:00 Copyright (c) 2023 Phytotaxa https://phytotaxa.mapress.com/pt/article/view/phytotaxa.599.3.5 <p><strong><em>Adiantum viscosum</em> (Pteridaceae), a new species endemic to sclerophyllous forest of Central Chile</strong></p> 2023-06-07T10:54:06+12:00 ARÓN CÁDIZ-VÉLIZ aron.cadiz.veliz@gmail.com BÁRBARA PALMA-VILLALOBOS barbarapalmav@gmail.com ALEJANDRO E. VILLARROEL alejandro.villarroel@userena.cl MÉLICA MUÑOZ-SCHICK melica4@gmail.com <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB"><em>Adiantum viscosum</em></span><span lang="en-GB"> (Pteridaceae) is a new species of fern endemic to Central Chile that inhabits the sclerophyllous forest of the Valparaíso Region. </span><span lang="en-GB"><em>Adiantum viscosum</em></span><span lang="en-GB"> is morphologically similar to </span><span lang="en-GB"><em>A. gertrudis</em></span><span lang="en-GB"> and </span><span lang="en-GB"><em>A. glanduliferum,</em></span><span lang="en-GB"> but it differs by the presence of capitate and glandular trichomes throughout the aerial portion of the plant (pinnules, rachis, petioles and petiolules), which produce a sticky and aromatic resin. We provide a description of the species based on morphological analysis, insights about its ecology and habitat, distribution map, illustrations, a proposal for a conservation category according IUCN criteria, and a taxonomic key to the species of the genus </span><span lang="en-GB"><em>Adiantum</em></span><span lang="en-GB"> present in Chile.</span></span></span></span></p> 2023-06-07T00:00:00+12:00 Copyright (c) 2023 Phytotaxa https://phytotaxa.mapress.com/pt/article/view/phytotaxa.599.3.6 <p><strong>Typification of the North American species of <em>Trillium</em> subg. <em>Trillium</em> (Melanthiaceae: Parideae)</strong></p> 2023-06-07T10:54:08+12:00 AARON J. FLODEN afloden@mobot.org WESLEY M. KNAPP Wesley_Knapp@NatureServe.org <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Here we provide type information and synonymy for the accepted North American species of </span><span lang="en-GB"><em>Trillium </em></span><span lang="en-GB">subg. </span><span lang="en-GB"><em>Trillium</em></span><span lang="en-GB"> and notes on the distribution and character variation for some species. Lectotypes are designated for </span><span lang="en-GB"><em>T. flexipes, T. rugelii</em></span><span lang="en-GB"> and </span><span lang="en-GB"><em>T. vaseyi</em></span><span lang="en-GB">. We also lectotypify the names </span><span lang="en-GB"><em>T.</em></span> <span lang="en-GB"><em>cernuum</em></span><span lang="en-GB"> var. </span><span lang="en-GB"><em>declinatum</em></span><span lang="en-GB"> f. </span><span lang="en-GB"><em>billingtonii </em></span><span lang="en-GB">and</span><span lang="en-GB"><em> T. cernuum </em></span><span lang="en-GB">var. </span><span lang="en-GB"><em>declinatum </em></span><span lang="en-GB">f. walpolei,</span> <span lang="en-GB">which have been associated with both </span><span lang="en-GB"><em>T. cernuum </em></span><span lang="en-GB">and</span><span lang="en-GB"><em> T. flexipes</em></span><span lang="en-GB">; </span><span lang="en-GB"><em>T</em></span><span lang="en-GB">. </span><span lang="en-GB"><em>cernuum </em></span><span lang="en-GB">f. </span><span lang="en-GB"><em>tangerae;</em></span><span lang="en-GB"> and </span><span lang="en-GB"><em>T. rhomboideum</em></span><span lang="en-GB"> var. </span><span lang="en-GB"><em>album</em></span><span lang="en-GB"> (=</span><span lang="en-GB"><em>T. rugelii</em></span><span lang="en-GB">), which has often been associated with </span><span lang="en-GB"><em>T. erectum</em></span><span lang="en-GB">.</span></span></span></span></p> 2023-06-07T00:00:00+12:00 Copyright (c) 2023 Phytotaxa https://phytotaxa.mapress.com/pt/article/view/phytotaxa.599.3.7 <p><strong><em>Heisteria austroecuadorica</em> (Erythropalaceae): A new species from southeastern Ecuador</strong></p> 2023-06-07T10:54:10+12:00 XAVIER CORNEJO xcornejoguay@gmail.com JÜRGEN HOMEIER jhomeie@gwdg.de CARMEN ULLOA ULLOA carmen.ulloa@mobot.org <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB"><em>Heisteria austroecuadorica</em></span><span lang="en-GB">, a new species of Erythropalaceae from the conserved evergreen montane forest at the San Francisco reserve, in southeastern Ecuador, is here described and illustrated. It is characterized by the flowers with 10 stamens, and relatively large fruits, with the apex conspicuously depressed, and the calyx not covering the base of the fruits. </span><span lang="en-GB"><em>Heisteria austroecuadorica </em></span><span lang="en-GB">is assessed provisionally as Endangered.</span></span></span></span></p> 2023-06-07T00:00:00+12:00 Copyright (c) 2023 Phytotaxa