[Botany • 2024] Dendrobium moniliforme var. hongbinii (Orchidaceae: Epidendroideae) • A New Variety from Sichuan, China

Dendrobium moniliforme var. hongbinii H.Bin Yang & B.Q.Zheng,

in Zheng, Yang, Wang et Chen, 2024. 

 杨洪斌石斛  ||  DOI: doi.org/10.11646/phytotaxa.678.1.5 

Abstract

A new variety of Orchidaceae, Dendrobium moniliforme var. hongbinii, collected from Sichuan Province, China, is described and illustrated based on morphological characteristics and molecular biological analysis. It belongs to Dendrobium and is similar to D. moniliforme, from which it differs by the length of mentum is more than half of the bud, the angle is obtuse, calyx sac ends acuminate, the petals and mid-lobe are subelliptic, the ratio of mid-lobe to the labellum is 1/3. Molecular biological analysis based on nuclear markers (ITS) and plastid markers (trnL intron) indicates that D. moniliforme var. hongbinii is a variety of D. moniliforme.

Chinese orchid flora, Dendrobium, morphology, phylogeny, Monocots

Dendrobium moniliforme var. hongbinii H.Bin Yang & B.Q.Zheng

 杨洪斌石斛(yáng hóng bīn shí hú) 

Bao-Qiang ZHENG, Hong-Bin YANG, Qun WANG and Xing-Liang CHEN. 2024. Dendrobium moniliforme var. hongbinii (Orchidaceae: Epidendroideae), A New Variety from Sichuan, China.  Phytotaxa. 678(1); 55-64. DOI: doi.org/10.11646/phytotaxa.678.1.5 

A team of Chinese researchers have identified a new species of Dendrobium, a genus of orchids known locally as shihu, in Ya'an, Sichuan province. The discovery was published recently in the botanical journal Phytotaxa.

 

[Botany • 2023] Ainea conzattii (Iridaceae: Tigridieae) revisited: Description of A New Variety

A. Flower, front view of Ainea conzattii var. conzattii; B. C. Flower, front view of A. conzattii var. macropetala; D. Flower dorsal view of A. conzattii var. macropetala.

Photo credits: A. Guadalupe Munguía; B., C., D. Carlos Martorell.

Abstract

A new variety of Ainea conzattii is described and illustrated, a key to recognize the two varieties of the species and a distribution map of both taxa are included.

Coixtlahuaca, Oaxaca, Tepelmeme Villa  de Morelos, Monocots

 Ainea conzattii var. macropetala Martorell, Espejo & López-Ferr., var. nov. 

Nova varietas ab originali varietate differt in illis quae tepalis internis (petalis) similibus in forma et magnitudine tepalis externis (sepalis) vs. tepalis internis multo minora quam externis.

 

Carlos Martorell, Ana Rosa López-Ferrari, Adolfo Espejo-Serna, Diego García-Meza and Rupert Clayton. 2023. Ainea conzattii (Iridaceae: Tigridieae) revisited: Description of A New Variety.  Phytotaxa. 600(1); 1-6. DOI: 10.11646/phytotaxa.600.1.1

 Researchgate.net/publication/371694254_Ainea_conzattii_revisited 

[Botany • 2015] Durio johoricus • A New Species and A New Variety of Durio Adans. (Malvaceae) from Peninsular Malaysia

Durio johoricus  Salma 

MNJ.my

Abstract 

 A new species of Durio, D. johoricus Salma, sp. nov. and one new variety, D.

singaporensis Ridl. var. jerangauensis Salma, var. nov. are described.

Keywords : Durio, Bombacaceae, Peninsular Malaysia, new species

Durio johoricus, flowers at base of trunk. 

•  Durio johoricus Salma sp. nov.  

Diagnosis: Durione malaccensi floribus rubris, petalis intus pilis densis stellatis, tubo staminali

intus pilis stellatis squamis fimbriatis, fructibus rubris, arillis semina totus obtectis differt.

Distribution: Endemic in Peninsular Malaysia, known only from Johor. Living specimens have also been observed in the Endau-Rompin FR, Selai FR and Segamat FR.

Ecology: In mixed dipterocarp forest, on hill slopes and rocky hills up to 170 m a.s.l.

Etymology: The species is named after the Johor state, the locality where it was found.

•  Durio singaporensis Ridl. var. jerangauensis Salma var. nov.  

Diagnosis: A varietate typica petalibus maioribus (7.7-9 cm longis nec 5-7 cm longis), epicalyce non persistenti, fructibus magnis (10-13 cm longis nec 4-9 cm) ellipsoideis apice acuto differt.

 I. Salam. 2015. A New Species and A New Variety of Durio Adans. (Malvaceae) from

Peninsular Malaysia. Malayan Nature Journal. 67(4); 421-418.

 http://www.MNJ.my/index.php/mnj/article/view/231

Salma Idris. 2016. Diversity and Utilization of Durian in Malaysia. 

http://www.doa.go.th/hort/download/d2-1300duriandiversity.pdf

[Botany • 2016] The Andean Paepalanthus pilosus complex (Eriocaulaceae): A Revision with Three New Taxa

DOI: 10.3897/phytokeys.64.6864

Abstract

A herbarium-based revision is provided for Paepalanthus pilosus and allies, five commonly confused species of cushion plants native to Andean paramo. These are placed in the recircumscribed Paepalanthus subsect. Cryptanthella Suess. The group includes P. pilosus, P. dendroides, and P. lodiculoides. An additional two species and one variety are newly described: Paepalanthus caryonauta, P. huancabambensis, and P. pilosus var. leoniae. The latter two are Peruvian endemics, while P. caryonauta is known from four countries, and has long been confused with other species. An additional, possibly undescribed taxon is noted from the Serrania de Perijá, Colombia. Five new synonyms and three lectotypes are proposed, and the common misapplication of some names is noted. Within the P. pilosus complex, species differences were found in timing of peduncle elongation, sex ratio, and leaf, perianth, diaspore and nectary morphology. Ecological differences are suggested by specimen data and a review of ecological literature. Descriptions, photographs and maps are provided for all species, as is a key to the groups of eriocaulaceous cushion plants from Andean South America.

Keywords: Andes, cushion plants, diaspores, leaf anatomy, nectaries, new species, paramo, taxonomy

Figure 1. Cushion habit of Paepalanthus pilosus var. pilosus in Venezuela, November 2012.
 A P. pilosus cushions with bunchgrasses, Páramo Batallón B Individual cushion, with graminoids emerging, Páramo Los Conejos.

 Photos by Serge Aubert, Station Alpine Joseph Fourier, France. www.cushionplants.eu.
DOI: 10.3897/phytokeys.64.6864

 Nancy Hensold. 2016. The Andean Paepalanthus pilosus complex (Eriocaulaceae): A Revision with Three New Taxa. PhytoKeys. 64: 1-57. DOI: 10.3897/phytokeys.64.6864

[Botany • 2014] Thismia hexagona var. grandiflora • A New Variety of Thismia hexagona (Thismiaceae) from Sabah, Borneo, Malaysia

Fig. 1. Thismia hexagona var. grandiflora Tsukaya, M. Suleiman & H. Okada var. nov. in its native habitat (type locality). A, Flowers of T. h. var. grandiflora. B, Gross morphology of T. h. var. grandiflora (scale = 1 cm).

http://ci.nii.ac.jp/naid/110009922438

Thismia hexagona Dančák, Hroneš, Koblová et Sochor was recently reported from Brunei Darussalam. It is characterized by its unique yellow and brown coloration and sharply hexagonal flower annulus. Here, we also report its discovery during a botanical expedition in the Maliau Basin Conservation Area, Sabah, Borneo, Malaysia. The Malaysian individuals differ from the original description of T. hexagona in the opening angle and size of the perianth lobes. We therefore propose it as a new variety, T. hexagona var. grandiflora Tsukaya, M. Suleiman & H. Okada var. nov. Detailed morphological characters are provided. 

Key words: Borneo, mycoheterotroph, new locality, Sabah, Thismia hexagona, Thismiaceae

Taxonomic treatment

Thismia hexagona var. grandiflora Tsukaya, M.Suleiman & H. Okada, var. nov. —Fig. 1.

Thismia hexagona var. grandiflora differs from T. hexagona var. hexagona in having much longer perianth lobes that open perpendicularly to the floral axis.

Typus. MALAYSIA, Maliau Basin Conservation Area, Sabah: 04°44'29"N, 116°57'55"E, 235 m alt., from the Studies Center to Seraya Camp, Maliau Basin Conservation Area, 15 Aug. 2013, H. Tsukaya, M. Suleiman & H. Okada KKT-1 (holo-BORH, iso-TI, KYO; part of specimen preserved in 50% ethanol, at all three herbaria).

Fig. 1. Thismia hexagona var. grandiflora Tsukaya, M. Suleiman & H. Okada var. nov. in its native habitat (type locality).

 A, Flowers of T. h. var. grandiflora. B, Gross morphology of T. h. var. grandiflora (scale = 1 cm).

http://ci.nii.ac.jp/naid/110009922438

The genus Thismia Griff. (Thismiaceae) comprises more than 45 mycoheterotrophic species (Jonker 1948; Merckx 2008; Merckx et al. 2013), including several species described within the past decade, such as T. mullarensis from Central Kalimantan (Tsukaya & Okada 2005), T. betung-kerihunensis from West Kalimantan (Tsukaya & Okada 2012a), and T. hexagona from Brunei (Dančák et al. 2013). The majority of these species appear to have been collected only once or a few times. Since mycoheterotrophs are highly dependent on the activities of both the fungi and the trees that sustain them, the richness of the mycoheterotroph flora is a good indicator of the floristic richness of the forests in which they occur (Merckx et al. 2013). In other words, mycoheterotrophs are easily affected by ecosystem destruction.

To conserve the biodiversity of tropical forests, we need additional information on the distribution of such vulnerable mycoheterotrophs. In our floristic studies in the Kalimantan area of Borneo we found one new genus, several new species, and a new variety of mycoheterotrophs (Tsukaya & Okada 2005, 2012a, 2012b, 2013a, 2013b, Tsukaya et al. 2011). Because Kalimantan has a rich diversity of mycoheterotrophs, we compared the mycoheterotroph floras of Kalimantan and Sabah, Borneo, starting with a botanical expedition in Maliau Basin Conservation Area, Sabah, with permission from the Maliau Basin Management Committee (YS/MBMC/2013/50) and Sabah Biodiversity Council [access license JKM/MBS.1000-2/2(152)]. We chose this area because Dr. Tim Utteridge, of the Royal Botanic Gardens, Kew, kindly showed one of us (HT) photographs of Thismia that he took in the conservation area. We suspected the photos to represent a new species of Thismia, based on other photos of Thismia taken by a professional photographer in Sabah, until the report of a new species T. hexagona, which looks similar, was published by Dančák et al. (2013). During our survey, we found three populations of T. hexagona flowering in the Maliau Basin Conservation Area. This is the first report of T. hexagona from Sabah. Because our collections have much longer perianth lobes than the typical variety, we describe them as T. hexagona var. grandiflora Tsukaya, M. Suleiman et H. Okada.

............

Hirokazu Tsukaya, Monica Suleiman and Hiroshi Okada. 2014. A New Variety of Thismia hexagona Dančák, Hroneš, Koblová et Sochor (Thismiaceae) from Sabah, Borneo, Malaysia. Acta Phytotax. Geobot. 65(3): 141–145. http://ci.nii.ac.jp/naid/110009922438

ResearchGate.net/publication/272747680_A_New_Variety_of_Thismia_hexagona_Dank_Hrone_Koblov_et_Sochor_(Thismiaceae)_from_Sabah_Borneo_Malaysia

[Botany • 2007] Impatiens macrovexilla var. yaoshanensis • New Variety of Balsaminaceae from Guangxi, China

Abstract

Impatiens macrovexilla Y. L. Chen var. yaoshanensis S. X. Yu, Y. L. Chen & H. N. Qin, a new variety of Balsaminaceae from Guangxi, China, is described. Variety yaoshanensis differs from the typical variety by having ovate-orbicular or ovate-oblong leaves, entire lateral sepals, an obvious auricle and entire distal lobe of the alae and visibly ridged seeds. Micromorphological characters of the pollen grains and seed surface under SEM of the two varieties also support the recognition of this taxon.

Key words: Impatiens, Impatiens macrovexilla var. yaoshanensis S. X. Yu, Y. L. Chen & H. N. Qin, new variety, Balsaminaceae, Guangxi, China.

Impatiens macrovexilla var. yaoshanensis S. X. Yu, Y. L. Chen & H. N. Qin, a new variety of Balsaminaceae from Guangxi, China: http://www.plantsystematics.com/qikan/manage/wenzhang/aps06037.pdf