New taxa and new records in Aspidistra (Convallariaceae s.s.) of Laos and Vietnam

This paper continues the publication of newly obtained results from a continuing taxonomic investigation of the genus Aspidistra in Laos and Vietnam. It includes illustrated diagnoses of two new species, A. melanaster Aver., K.S. Nguyen & Tillich, A. obliqua K.S. Nguyen & Aver., two new varieties, A. semiaperta Aver. & Tillich var. globulifera Aver., K.S. Nguyen & Tillich, A. lutea Tillich var. luteo-rubra K.S. Nguyen, Aver. & Tillich, and notes on two species, A. austroyunnanensis G.W. Hu, Lei Cai & Q.F. Wang and A. hekouensis H. Li, C.L. Long & Bogner newly recorded in the flora of Vietnam. Color illustrations, new or updated data on morphology, ecology, phenology, tentative relationships, distribution and conservation status are provided for all the mentioned taxa.     

Molecular characterization of Calocedrus rupestris Aver., H.T. Nguyen & L.K. Phan, 2008 (Cupressaceae) based on ITS1 partial sequence

Calocedrus rupestris Aver., H.T. Nguyen & L.K. Phan was described in 2008 based on some morphological characters that were not sufficiently significant to discriminate it as a species distinct from C. macrolepis Kurz. We applied a new approach to resolve these conflicting views by using sequence data from DNA (ITS) to elucidate phylogenetic relationships between the two species. Analyses of a partial ITS1 sequence in 5 individuals of 2 subpopulations of C. macrolepis and 18 individuals of 8 subpopulations of C. rupestris collected in Vietnam were done. Molecular characterization of the two species showed its low divergence with the lack of autapomorphic characters. In addition, the ITS1 partial sequences of some C. rupestris individuals were identical with C. macrolepis. Due to the less distinctive morphology between C. rupestris and C. macrolepis, the divergence between them does not exceed the interspecific levels, and therefore, C. rupestris could not be regarded as an independent species in relation to C. macrolepis but only as one of its varieties, C. macrolepis var. rupestris (Aver., H.T. Nguyen & L.K. Phan) L.K. Phan, Long K. Phan & Aver.     

广西植物名录补遗(Ⅷ)

该文报道了17个广西新记录物种，即柔毛阴山荠[Yinshania henryi(Oliv.) Y. H. Zhang]、臭荠(Lepidium didymum L.)、小酸模(Rumexa acetosella L.)、浙江凤仙花(Impatiens chekiangensis Y. L. Chen)、贵州海桐(Pittosporum kweichowense Gowda)、越南圆叶梭罗树(Reevesia orbicularis Tardieu)、冬青叶鼠刺(Itea ilicifolia Oliv.)、窄叶枇杷(Eriobotrya henryi Nakai)、瘤枝密花树[Myrsine verruculosa(C. Chen) Pipoly&C. Chen]、毛腺萼木(Mycetia hirta Hutch.)、二萼丰花草[Spermacoce exilis(L. O. Williams) C. D. Adams]、滇苦菜(Picris divaricata Vaniot)、纤细通泉草(Mazus gracilis Hemsl.)、皱叶荚蒾(Viburnum rhytid...     

Hoya aphylla (Apocynaceae,Asclepiadoideae), a new leafless species from Laos

The leafless species Hoya aphylla Aver. N.S. Khang & Averyanova (Apocynaceae) is described and illustrated as a new species for science from Hin Nam No National Protected Area of Laos (central Laos, Khammoune province). In its floral morphology, this new species may be similar to H. lyi, H. carnosa and H. multiflora, but it differs in corona color and shape of corona segments. Like the first two mentioned species, the new species may be referred to the type section of the genus, but in terms of it its leafless habit it exhibits an isolated position.     

细口蜘蛛抱蛋，中国天门冬科一新记录种

报道了中国天门冬科蜘蛛抱蛋属一新记录种:细口蜘蛛抱蛋(Aspidistra semiaperta Aver. et Tillich),并提供特征描述及彩色图片。凭证标本存放于广西壮族自治区中国科学院广西植物研究所标本馆(IBK)。     

A new entomopathogenic nematode, <Emphasis Type="Italic">Steinernema robustispiculum</Emphasis> n. sp. (Rhabditida: Steinernematidae), from Chumomray National Park in Vietnam

Steinernemar robustispiculum n. sp. (Rhabditida: Steinernematidae) was isolated from woodland in Chumomray National Park, Sason, Sathay, Kontum, Vietnam. Its morphology, morphometrics, cross-hybridisation and the ITS-rDNA sequence analysis revealed that S. robustispiculum clearly differs from other known Steinernema spp. As in the cases of S. intermedium (Poinar, 1985), S. robustispiculum has very robust spicules, but it can be distinguished by the longer tail of the infective juvenile, lower E%, shorter spicules, the shape of the spicules, the number of genital papillae in the caudal region and the presence of a mucron on the male tail. S. robustispiculum has a lateral field resembling that of S. sangi Phan, Nguyen & Moens, 2001, but can be distinguished by a higher E%, higher D%, smaller length to width ratio of the spicules and the morphology of both the spicule head (manubrium) and the dorsal lobe of the spicule. The morphometrics of infective juveniles of S. robustispiculum are similar to those of S. monticolum Stock, Choo & Kaya, 1997; these species can be distingusihed by the position of the excretory pore, the smaller length to width ratio of the spicules, and the length and morphology of the spicule head (manubrium). The phylogenetic relationships within Steinernema Travassos, 1927, including the newly sequenced Vietnamese species S. robustispiculum n. sp., S. loci Phan, Nguyen & Moens, 2001, S. thanhi Phan, Nguyen & Moens, 2001 and S. sangi, are presented based on analyses of the ITS-rDNA. The ITS RFLP profiles obtained from 17 different restriction enzymes are also presented.     

广西植物名录补遗Ⅵ——兰科4新记录属和13新记录种

广西壮族自治区位于我国南部，气候湿润，生境复杂，具有丰富的物种多样性。该文报道广西兰科植物13个新记录种，即旗唇兰[Kuhlhasseltia yakushimensis(Yamamoto) Ormerod]、紫茎兰(Risleya atropurpurea King&Pantl.)、指柱兰(Stigmatodactylus sikokianus Maxim. ex Makino)、二尾兰(Vrydagzynea nuda Bl.)、深圳拟兰(Apostasia shenzhenica Z. J. Liu&L. J. Chen)、拟泰国卷瓣兰(Bulbophyllum nipondhii Seidenf.)、南岭叠鞘兰(Chamaegastrodia nanlingensis H. Z. Tian&F. W. Xing)、垂叶斑叶兰(Goodyera pendula Maxim.)、四腺翻唇兰(Hetaeria anomala Lindl.)、褐花羊耳蒜(Liparis brunnea Ormerod)、聚叶钗子股(Luisia appressifolia Av...     

西藏兰科植物名录增补

对2017年11月至2022年1月报道于西藏自治区的15个兰科植物新种、77个兰科植物新记录种统计表明,绝大部分(85.9%)发现于墨脱县。该研究于2021年进一步对墨脱县野生兰科植物资源进行调查,经查阅标本和文献比对鉴定,共发现采自墨脱县的兰科植物西藏新记录属1个——叉柱兰属(Cheirostylis Blume),西藏兰科新记录种10个——巡胡石豆兰(Bulbophyllum sinhoense Aver.)、葡萄天麻(Gastrodia putaoensis X.H.Jin)、中华叉柱兰(C.chinensis Rolfe)、弯瓣大苞兰[Bulbophyllum sasakii(Hayata)J.J.Verm.,Schuit.&de Vogel]、独龙石斛(Dendrobium praecinctum Rchb.f.)、直立山珊瑚[Cyrtosia falconeri(Hook.f.)Aver.]、红唇鸢尾兰(Oberonia rufilabris Lindl.)、白肋菱兰[Rhomboda tokioi(Fukuy.)Ormerod]、带唇兰(Tainia dunnii Rolfe)和绿叶线柱兰(Zeuxine agyokuana Fukuy.),其中巡胡石豆兰和葡萄天麻为2个中国新记录种。结合最新文献及野外植株形态,对以上物种分别进行了描述,提供花期照片和解剖图,并总结了新记录种与相似种之间的差异,以方便鉴别。凭证标本均存放于华东师范大学植物标本馆(HSNU)。     

中国长足兰属(兰科)一新记录种

报道了中国兰科植物一新记录种,即西蒙长足兰[Pteroceras simondianum(Gagnep.)Aver.],并提供了描述和图片。本种形态与长足兰[P.leopardinum(Par.&Rchb.f.)Seidenf.&Smitin.]相似,但叶明显较宽,偏斜;花淡黄色,略被绛紫色斑块或条纹;子房光滑;花粉块为孔裂等,易于区别。     

中国莎草科一新记录种——菊芳薹草

报道了中国莎草科(Cyperaceae)薹草属一新记录种——菊芳薹草(Carex trongii K.K.Nguyen)。该种分布于我国广西与越南交界地区的石灰岩地区。菊芳薹草与宽叶薹草组(Carex sect.Siderostictae Ohwi)的种类在形态上近似,但以秆中生和果囊密被糙毛而易于区别。提供了菊芳薹草的形态描述和线条图。     

中国蜘蛛抱蛋属植物一新记录种——垂花蜘蛛抱蛋

报道了产自云南屏边的中国蜘蛛抱蛋属一新记录种——垂花蜘蛛抱蛋（Aspidistra nutans Aver.&Tillich）。该种是2017年发表的新种,采集于越南西北部地区,原文缺少果实描述,现补充描述该种果的形态特征。本种与辐花蜘蛛抱蛋（A.subrotata Y.Wan&C.C.Huang）在形态上相近,但其叶片中脉和侧脉明显突出,花梗近先端向下弯曲,长0.8~4.5 cm,花下垂,常贴生于地面,花被紫褐色,常平展,柱头纯白色（后者叶脉凹陷,花梗直立,长约5 mm,花斜向上开,花被暗紫色,内面具有小乳突,柱头白色带紫色斑点）而显著有别于后者。     

中国陕西侧跗叶蜂属七新种及分种检索表（膜翅目：叶蜂科）

简要记述了中国陕西省侧跗叶蜂属研究状况。描述了侧跗叶蜂属7新种:中原侧跗叶蜂 Siobla centralia Niu & Wei sp. nov.,弯毛侧跗叶蜂S.curvata Niu & Wei sp.nov.,S. listoni Niu & Wei sp. nov.,柔刃侧跗叶蜂S. pseudoplesia Niu & Wei sp. nov.,秦巴侧跗叶蜂S. qinba Niu & Wei sp. nov.,陕西侧跗叶蜂S.shaanxi Niu & Wei sp. nov.,狭颊侧跗叶蜂S. vulgaria Niu & Wei sp. nov.编制了陕西省26种侧跗叶蜂的分种检索表。     

931. RHODODENDRON SUOILENHENSE

A new species of Rhododendron, R. suoilenhense D.F. Chamberlain, Nguyen Thi Thanh Huong & Rushforth, is described from northern Vietnam and illustrated. Its discovery and distribution are noted. Suggestions for its cultivation are given.     

中国蜘蛛抱蛋属二新记录种

首次报道了黄瓣蜘蛛抱蛋(Aspidistra lutea H.-J.Tillich)和吉婆岛蜘蛛抱蛋(A.arnautovii H.-J.Tillich)在中国的分布。这两种植物分别被发现于广西西南部的靖西县、龙州县。文中提供了形态学描述和图片。凭证标本存放于广西植物标本馆(IBK)。     

Schizostachyum yalyense sp. nov. and S. ninhthuanense sp. nov. (Gramineae: Bambusoideae) from Vietnam

Two new species of Schizostachyum Nees (Poaceae: Bambusoideae): S. yalyense N. H. Xia, V. T. Tran et H. N. Nguyen and Schizostachyum ninhthuanense N. H. Xia, V. T. Tran et H. N. Nguyen (Poaceae: Bambusoideae) are described and illustrated from Vietnam. Schizostachyum yalyense is similar to S. lima (Blanco) Merrill, but differs by culm sheaths with a concave apex 4–5 cm wide and 1.0–1.5 cm deep, pseudospikelets clustered on the wholly leafless flowering branches, possession of 2 bracts and lodicules. Schizostachyum ninhthuanense is related to S. hainanense Merrill ex McClure, but differs by culm sheaths covered with white hairs and having white–brown hairs at the apex, ligule margin densely pale‐ciliate, pseudospikelets clustered on wholly leafless flowering branches, presence of 3 lodicules, two stigmas apically on the style and the third stigma branching off from one of the two other stigmas.     

广西维管植物分布新记录

该文报道了广西维管植物新记录9种，即刻节润楠(Machilus cicatricosa S. Lee)、四瓣马齿苋(Portulaca quadrifida L.)、腺果藤(Pisonia aculeata L.)、阳春山龙眼(Helicia yangchunensis H. S. Kiu)、小鹿藿[Rhynchosia minima(L.) DC.]、白皮素馨(Jasminum rehderianum Kobuski)、宿苞厚壳树(Ehretia asperula Zoll. et Mor.)、卵叶线柱兰(Zeuxine ovalifolia L. Li&S. J. Li)和羽状穗砖子苗(Cyperus javanicus Houtt.)。文中还提供了识别特征和彩色照片，并列出了每个种的标本引证及地理分布。     

<Emphasis Type="Italic">Typhonium stigmatilobatum</Emphasis> (<Emphasis Type="Italic">Araceae</Emphasis> tribe <Emphasis Type="Italic">Areae</Emphasis>), a new species from Vietnam

Summary   Typhonium stigmatilobatum V. D. Nguyen, a new species from Vietnam, is described and illustrated.