Tetraphyllum Griff. ex C. B. Clarke, a newly recorded genus of Gesneriaceae from Guangxi, China is reported. Tetraphyllum has only three species. The morphological description and the distinctive features to the species of Tetraphyllum are provided, and the detailed morphological description and photos of T. confertiflorum(Drake)B. L. Burtt are provided. The voucher specimens are preserved in the Herbarium of Guangxi Institute of Botany(IBK)and Shanghai Chenshan Herbarium(CSH).]]> 2024/6/5 11:30:13 1,2, CHEN Bin³, LI Zhenglong⁴, ZHAO Qiong⁴, DO Van Truong⁵, WEN Fang^1,2*]]> XIONG Chi^1,2, CHEN Bin³, LI Zhenglong⁴, ZHAO Qiong⁴, DO Van Truong⁵, WEN Fang^1,2* 11true Dendrobium is the second largest genus of Orchidaceae, distributed in southern and southwestern China. The number of Dendrobium is large, but some taxa have not been discovered. During the investigation of orchid resources in Xizang, two Dendrobium species were discovered, which were identified as D. macraei Lindl. and D. ritaeanum King & Pantl. Both were recorded for the first time in China. The results are as follows: D. macraei is similar to D. plicatile, with the difference that the edge of the middle lobe of lip is entire, apex concave; D. ritaeanum is similar to D. angustifolium, the flowers of the former are very small, and sepals and petals do not have purple stripes, and the lip is triangular up to 1.4 cm in length. The detailed morphological characteristics and photographs of the two species are provided. The specimens are stored in the Herbarium of Xizang Agricultural and Animal Husbandry University. This discovery enriches the local data and the potential medicinal plant resource reserve of orchids in China, and is of great significance to the biodiversity study of orchids and the investigation of medicinal orchid resources.]]> 2024/6/5 11:30:13 1,2, YU Yingpeng^1,2, WANG Wei^1,2, XING Zhen^1,2, CHEN Xueda^1,2*]]> LI Mengkai^1,2, YU Yingpeng^1,2, WANG Wei^1,2, XING Zhen^1,2, CHEN Xueda^1,2* 10true Isoëtes changxingensis, a new species from Zhejiang Province, China, is illustrated and described here. The new species morphologically resembles I. baodongii, but it differs from the latter by 44 chromosomes, megaspore 317 - 411 μm(mean=360 μm)[vs. 22, 390 - 510 μm(mean=450 μm)]. It is also similar to I. longpingii in terms of megaspore size, with the difference that I. changxingensis rhizome corms 3-lobed, leaves 2 - 3 mm wide at middle, megaspore echinate-cristate(vs. 2-lobed, 1 mm, tuberculate-cristate). This species is distinguished from I. sinensis by its smaller megaspore, different surface ornamentation, and leaf blade 20 - 60 cm [vs. 340 - 450 μm(mean=409 μm), cristate, 15 - 30 cm]. According to Guidlines for Using the IUCN Red List Criteria, the conservation status of I. changxingensis should be regarded as endangered(EN).]]> 2024/5/1 9:40:10 1, SHEN Jiahao^2,3,4, ZHAO Xiao¹, YAN Yuehong⁵, ZHU Yufen⁶, WU Jianyong¹, GU Yufeng^5*, LIU Xingjian^2,3,4*]]> TONG Ling¹, SHEN Jiahao^2,3,4, ZHAO Xiao¹, YAN Yuehong⁵, ZHU Yufen⁶, WU Jianyong¹, GU Yufeng^5*, LIU Xingjian^2,3,4* 9true Actinostephanus F. Wen, Y. G. Wei & L. F. Fu is a monotypic genus in Gesneriaceae endemic to Guangdong, China. It is named for its radiate corolla lobes, the relatively rare character among Gesneriaceae. Some scholars have suggested that the name Actinostephanus is easily confused with the generic name of the extinct fossil phytoplankton Actinostephanos Khursevich, and proposed that Actinostephanus should be treated as a later homonym of Actinostephanos. According to the International Code of Nomenclature of Algae, Fungi and Plants(Shenzhen Code)(2018), we here propose a new name Radiaticorollarus Y. G. Wei, F. Wen & Lei Cai for the later homonym Actinostephanus F. Wen, Y. G. Wei & L. F. Fu, and treat Actinostephanus enpingensis F. Wen, Y. G. Wei & Z. B. Xin as a synonym of the new combination Radiaticorollarus enpingensis(F. Wen, Y. G. Wei & Z. B. Xin)F. Wen, Y. G. Wei & Lei Cai.]]> 2024/4/28 12:18:32 1,2, WEI Yigang^1,2, LI Xiaojuan^1,2, XIONG Chi^1,2, CAI Lei^3*]]> WEN Fang^1,2, WEI Yigang^1,2, LI Xiaojuan^1,2, XIONG Chi^1,2, CAI Lei^3* 8true Phaeophyscia collected from Mount Tai. One species, P. taishanensis is reported as new to science. It is characterized by the following characters: white or hyaline cortical hairs sparsely on the upper surface of the marginal peripheral zones of the lobes; white medulla; black lower surface with sometimes white or pale brown ends; sparse cortical hairs occasionally on upper portion of thalline margin; and ascospores brown, Physcia-type, sized(18.0-20.5)μm ×(9.0-10.0)μm. Based on phenotypical characteristics, the similarities and differences between the new species and similar species were discussed. the maximum likelihood phylogenetic tree was constructed with ITS sequence, and the sequence analysis was carried out. A detailed morphological description and pictures of the characteristics of this new species are provided. The discovery of this new species has accumulated basic data for the study of Physciaceae biodiversity.]]> 2024/4/28 12:18:32 *]]> JIANG Shuhao, JIA Zefeng^* 7true Primulina pingguoensis H. S. Ma & B. Pan, a new species of Primulina Hance, Gesneriaceae from Guangxi Zhuang Autonomous Region, China, is illustrated and described here. The new species morphologically resembles P. carinata Y. G. Wei, F. Wen & H. Z. Lü, but it differs from the latter by lobes narrowly lanceolate-linear, length-width ratio more than 2(rounded-ovate, length-width ratio less than 1.5), 8-10 purple stripes from corolla throat to the bottom of corolla tube, the same color with corolla, without honey guides(vs. brown stripes, different color with corolla, 2 yellow honey guides inside), leaf blade elliptic to broadly ovate,(6.5-9.5)cm ×(4.5-6.5)cm [(vs. broadly elliptic to ovate,(4.0-5.0)cm ×(3.0-4.0)cm], leaf blade base slightly cuneate(vs. rounded), corolla tube tubular, ventrally carinate,(vs. narrowly funnelform, strongly carinate, forming a clear keel), etc. The conservation status of P. pingguoensis is considered as ‘Critically Endangered'(CR)according to the IUCN red list categories and criteria.]]> 2024/4/28 12:18:32 *]]> MA Husheng, LU Zhaocen, XU Weibin, PAN Bo^* 6true Rhizocarpon Ramond ex DC. species by the method of combining phenotypic characteristics(morphology, anatomy and chemistry)with genotypic characteristics(ITS sequence). The aims of this present paper are to clarify the status of some species and explore the relationship between phenotype and genotype in Rhizocarpon. During the study on Rhizocarpon species from southwest China, R. sichuanense Y. M. Zhang, L. Hu & W. C. Wang sp. nov. is described as a new species in this genus. The new species is morphologically similar to R. cinereonigrum Vain and R. sinense Zahlbr., which also produces brown thallus, medulla I-, 8-spored ascus and brown ascospores with 1-septa. But it can be distinguished by the scattered, areolate to subsquamulose thallus, a distinct black prothallus, large ascospores are [(27-)32-42.5] μm × [12.5-17.5(-20)] μm and the presence of barbatic acid is in the thallus. In phylogenetic trees, it is also similar to R. badioatrum(Flörke ex Spreng. )Th. Fr. which can be distinguished by the more continuous thallus with diffractaic acid or without secondary products, and the smaller spores [(23-36)μm ×(13-16)μm] than this new species. The phylogenic results are as follows:(1)The new species R. sichuanense belongs to badioatrum group which belongs to Rhizocarpon subg. Phaeothallus;(2)It is unsuitable to classify some groups only based on anatomical characteristics(spore size and separation type)in Rhizocarpon, the chemical characteristics should also be considered. In this paper, the achievement of ITS sequences provide the basic data for an establishment of a more reasonable and natural classification system. In addition, we provide high resolution pictures of morphological, anatomical and chemical characteristics as well as detailed descriptions of the new species. The key to the species of Rhizocarpon subg. Phaeothallus with 1-septa brown spore(Badioatrum group)in the world is also provided, which will provide basic data for the further studies in this group.]]> 2024/4/28 12:18:32 1, WANG Weicheng², WANG Yuhua¹, ZHONG Chunjiao¹, HU Ling^1*]]> ZHANG Yanmeng¹, WANG Weicheng², WANG Yuhua¹, ZHONG Chunjiao¹, HU Ling^1* 5true Didymophysa Boiss., a newly recorded genus of Brassicaceae from western Xinjiang, China is reported. Didymophysa Boiss. have three species, D. fedtschenkoana Regel, D. aucheri Boiss. and D. fenestrata. The morphological description and the distinctive features to the species of Didymophysa are provided, and the detailed morphological description and photographs of D. fedtschenkoana Regel are provided. Lastly, the biogeographical significance of the discovery of newly recorded genus and species was discussed, as well as the plant diversity, specificity, and work recommendations in the western plateau region of Xinjiang.]]> 2024/4/28 12:18:32 1, HUANG Yahui², ZHAO Xiaolin³, ZHANG Yunling^3*]]> YANG Zongzong¹, HUANG Yahui², ZHAO Xiaolin³, ZHANG Yunling^3* 4true Indocalamus semifalcatus(H. R. Zhao et Y. L. Yang)T. P. Yi, there were only parts of vegetative organs reported. Based on field population investigation, indoor stereoscopic anatomy and scanning electron microscope(SEM), its reproductive organs, complete vegetative organs and micromorphological features of the abaxial leaf epidermis, were described and illustrated herein, and its geographical distribution was also updated. The results were as follows:(1)Reproductive organ features: panicle, spikelet and spike densely white pubescent, glume, pelea and lemma both smooth and glabrous, stamens 3, anthers purple, stigmas 2, white, feathery.(2)Vegetative features: culms up to 4.5 m tall, up to 2 cm in diameter, culm sheath auricle semifalcate or weak, culm sheath erect close to culm, foliage auricle weak or absent, ligule margin with densely ciliate; both sides of leaf blade homochromatic and glabrous.(3)Micromorphologic characteristics of the abaxial leaf: stomatal apparatus invisible, eight to ten elongated papillae covered the stomatal apparatus, silica bodies saddle-shaped, micro-hairs and macro-hairs both absent.(4)The new distribution area was Guanyin Mountain of Guiyang in Guizhou. The species is the most similar to I. longiauritus Hand.-Mazz., differed by culm sheath and leaf sheath with auricles semifalcate or rare, culm up to 4.5 m tall and 2 cm in diameter.]]> 2024/4/28 12:18:32 1,2, LI Yonglong¹, CUI Ling¹, YANG Guangyao¹, ZHANG Wengen^1*]]> GAO Liqin^1,2, LI Yonglong¹, CUI Ling¹, YANG Guangyao¹, ZHANG Wengen^1* 3true Bryum atrovirens Brid. complex in China was critically revised based on morphological evidence, with a focus on the tubers. The aim of the study is to clarify the morphological delimitation, and geographical distribution for each recognized species of this complex in China. The results show that:(1)Nine species are recognized for the complex in China, namely B. apiculatum Schwägr., B. atrovirens Brid., B. bornholmense Wink. & R. Ruthe, B. clavatum (Schimp.)Müll. Hal., B. radiculosum Brid., B. rubens Mitt., B. sauteri Bruch & Schimp., B. stellituber Arts and B. tuberosum Mohamed & Damanhuri. B. stellituber represents a new record for China, whereas sporophytes are for the first time recorded in two populations of the new record, and the rhizoidal tubers of B. atrovirens and B. rubens are first documented from Chinese material.(2)Species of the B. atrovirens Brid. complex are ‘ephemeral' colonists adapted to the exploitation of short-lived habitat gaps. Asexual reproduction by means of tubers was observed to be common and numerous. Identification of species within the complex relies heavily on the tuber characteristics, including its distribution(along short or long rhizoids, clustered or not), color, shape, size, cell wall thickness, presence of surface protuberance, and degree of protuberance when present.(3)The distribution at global and Chinese provincial levels for each species is summarized. An identification key to species of the B. atrovirens Brid. complex in China is presented. In conclusion, the species identification of the B. atrovirens Brid. complex can be rapidly accomplished based on the morphological characteristics exhibited by the tuber. The species newly record adds data for the moss in China.]]> 2024/4/28 12:18:32 1*, NIU Junying¹, TANG Qiming², HO Boon-Chuan³, WEI Yumei²]]> LIU Yongying^1*, NIU Junying¹, TANG Qiming², HO Boon-Chuan³, WEI Yumei² 2true Bryum atrovirens Brid. complex in China was critically revised based on morphological evidence, with a focus on the tubers. The aim of the study is to clarify the morphological delimitation, and geographical distribution for each recognized species of this complex in China. The results show that:(1)Nine species are recognized for the complex in China, namely B. apiculatum Schwägr., B. atrovirens Brid., B. bornholmense Wink. & R. Ruthe, B. clavatum (Schimp.)Müll. Hal., B. radiculosum Brid., B. rubens Mitt., B. sauteri Bruch & Schimp., B. stellituber Arts and B. tuberosum Mohamed & Damanhuri. B. stellituber represents a new record for China, whereas sporophytes are for the first time recorded in two populations of the new record, and the rhizoidal tubers of B. atrovirens and B. rubens are first documented from Chinese material.(2)Species of the B. atrovirens Brid. complex are ‘ephemeral' colonists adapted to the exploitation of short-lived habitat gaps. Asexual reproduction by means of tubers was observed to be common and numerous. Identification of species within the complex relies heavily on the tuber characteristics, including its distribution(along short or long rhizoids, clustered or not), color, shape, size, cell wall thickness, presence of surface protuberance, and degree of protuberance when present.(3)The distribution at global and Chinese provincial levels for each species is summarized. An identification key to species of the B. atrovirens Brid. complex in China is presented. In conclusion, the species identification of the B. atrovirens Brid. complex can be rapidly accomplished based on the morphological characteristics exhibited by the tuber. The species newly record adds data for the moss in China.]]> 2024/4/28 0:00:00 1*, NIU Junying¹, TANG Qiming², HO Boon-Chuan³, WEI Yumei²]]> LIU Yongying^1*, NIU Junying¹, TANG Qiming², HO Boon-Chuan³, WEI Yumei² 1true