Gardens' Bulletin Singapore最新文献

{"title":"Nine new species and one new subspecies of Hoya (Apocynaceae: Asclepiadoideae) from Borneo","authors":"M. Rodda, S. Rahayu","doi":"10.26492/gbs74(1).2022-08","DOIUrl":"https://doi.org/10.26492/gbs74(1).2022-08","url":null,"abstract":". In the present paper we publish nine new species and one new subspecies from Borneo, Hoya ariffinii Rodda & S.Rahayu, H. boycei Rodda & S.Rahayu, H. curtisii King & Gamble subsp. collariata S.Rahayu & Rodda, H. dulitensis Rodda & S.Rahayu, H. kaikoeana S.Rahayu & Rodda, H. kapuasensis S.Rahayu & Rodda, H. kerangasensis Rodda & S.Rahayu, H. peltata Rodda & S.Rahayu, H. polypus S.Rahayu & Rodda and H. sangguensis S.Rahayu & Rodda. Five species are endemic to Kalimantan, two to Brunei and one to Sarawak. Only Hoya kerangasensis is found in Brunei, Sabah and Sarawak, and only H. sangguensis is also found outside Borneo in Peninsular Malaysia. With these new species the number of Hoya of Borneo reaches 85 species and four subspecies. long, c. 1 mm diam., pinkish white, glabrous. Calyx lobes broadly triangular, c. 1.5 × 1 apex acute, outside, glabrous inside; basal colleters one at each calyx lobe sinus, oblong, c. 0.1 mm long. Flowers negatively geotropic. Corolla rotate with reflexed lobes, c. 1.5 cm diam. when flattened; tube 1–2 mm long, white inside, pinkish outside, glabrous; oblong, c. 7 × 4 mm, white inside, pinkish outside, glabrous. at the base of staminal c. 1 mm wide, glabrous. Climber, epiphytic, latex white. Stems of two types: climbing, with adventitious roots, internodes 5–12 cm long, sterile; non climbing, without adventitious roots, internodes 1.5–3 cm long, fertile, both types cylindrical, stout to slender, 1.5–5 mm diam., pubescent turning glabrescent when mature. Leaves: petiole terete, channelled above, 4–8 mm long, 1.2–2 mm diam., pubescent; lamina elliptic, very thick and coriaceous, 2.5–6.5 × 1–2.5 cm, dark green, glabrous above, very sparsely pubescent below, margin recurved, sparsely ciliate, apex rounded, base attenuate to acute; venation pinnate, secondary veins indistinct; basal colleters not observed on the available material. Inflorescence one per node, pseudo-umbelliform, convex, consisting of 9–20 flowers; peduncle extra-axillary, tropism unknown, likely positive, terete, 0.5–1.5 cm long, 1–1.5 mm diam., older peduncles forming a rachis from previous flowerings, pubescent; pedicels filiform, 23–28 mm long, c. 0.5 mm diam., glabrous. Calyx 2.5–3 mm diam., calyx lobes oblong, 0.8–1.1 × 0.4–0.5 mm, apex rounded or acute, dull red, outside sparsely pubescent, inside glabrous, ciliate; basal colleters one at each calyx lobe sinus, ovate, c. 0.1 mm long. Corolla rotate with reflexed lobes, 6–8 mm diam. when flattened, dark crimson; tube 1–1.2 mm long, outside glabrous, inside densely pubescent, glabrescent towards the centre; lobes ovate, 3–4 × 1.8–2.2 mm, apex acute, outside glabrous, inside densely pubescent. Gynostegium sub-sessile. Corona one per node, convex, consisting of 6–10 flowers; peduncle negatively geotropic or laterally held, 2–10 cm long, 1.2– 1.6 mm diam., glabrous; pedicels c. 20 × 1 mm, pubescent. Calyx lobes deltate, c. 2 × 1 mm, apex acute, pubescent outside, glabrous inside; basal colleters one at each","PeriodicalId":216739,"journal":{"name":"Gardens' Bulletin Singapore","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122604144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flora of Singapore precursors, 32: Discoveries in Mucuna (Leguminosae, subfamily Papilionoideae) with a review of the genus in Singapore","authors":"B. C. Ho, H. K. Lua","doi":"10.26492/gbs74(1).2022-04","DOIUrl":"https://doi.org/10.26492/gbs74(1).2022-04","url":null,"abstract":"","PeriodicalId":216739,"journal":{"name":"Gardens' Bulletin Singapore","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128595797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hexatheca longipedunculata (Gesneriaceae), a new species from Sarawak, Borneo","authors":"S. Julia, R. Kiew, C. Y. Ling","doi":"10.26492/gbs74(1).2022-07","DOIUrl":"https://doi.org/10.26492/gbs74(1).2022-07","url":null,"abstract":"Hexatheca longipedunculata S.Julia & Kiew, a new species from Sarawak, is described and illustrated. Hexatheca is a genus endemic to the island of Borneo. The description of this new species brings the number of species recognised in the genus to four. A key to the species and subspecies of Hexatheca and a distribution map of the newly described species are presented. Its conservation status is assessed.","PeriodicalId":216739,"journal":{"name":"Gardens' Bulletin Singapore","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121804358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flora of Singapore precursors, 30: Notes on Symplocaceae in Singapore","authors":"I. Turner","doi":"10.26492/gbs74(1).2022-02","DOIUrl":"https://doi.org/10.26492/gbs74(1).2022-02","url":null,"abstract":"The native Symplocaceae of Singapore (eight Symplocos species) are listed with synonymy and typification. A total of 30 lectotypifications are made, including six at the second step.","PeriodicalId":216739,"journal":{"name":"Gardens' Bulletin Singapore","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121120761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new species of Arundinella (Poaceae) from the Nilgiri Biosphere Reserve, India","authors":"M. Murugesan, V. Anusuba, W. Arisdason, R. Tharani, B. Karthik","doi":"10.26492/gbs74(1).2022-09","DOIUrl":"https://doi.org/10.26492/gbs74(1).2022-09","url":null,"abstract":"Arundinella mukurthiana Murug. & Anusuba (Poaceae), a new species from the high-altitude grasslands of Mukurthi National Park, a part of Nilgiri Biosphere Reserve of the Western Ghats, Tamil Nadu, India, is described along with a detailed description, phenological information, a line drawing and photographs. A note on its conservation status is also provided.","PeriodicalId":216739,"journal":{"name":"Gardens' Bulletin Singapore","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122784325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Araliaceae of Peninsular Malaysia: five new species,two neotypifications and twenty-two lectotypifications in several genera","authors":"R. de Kok","doi":"10.26492/gbs74(1).2022-06","DOIUrl":"https://doi.org/10.26492/gbs74(1).2022-06","url":null,"abstract":"","PeriodicalId":216739,"journal":{"name":"Gardens' Bulletin Singapore","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122011947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Memecylon acuminatissimum, a new record for Singapore","authors":"M. Hughes","doi":"10.26492/gbs74(1).2022-01","DOIUrl":"https://doi.org/10.26492/gbs74(1).2022-01","url":null,"abstract":"The tree species Memecylon acuminatissimum Blume is recorded as new to Singapore, with the only known locations being the Singapore Botanic Gardens’ Rain Forest and Chestnut Nature Park.","PeriodicalId":216739,"journal":{"name":"Gardens' Bulletin Singapore","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129922543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flora of Singapore precursors, 31: The genus Boerhavia (Nyctaginaceae) in Singapore and clarification of Boerhavia diffusa in Singapore and Peninsular Malaysia","authors":"L. M. Choo, L.M.J. Chen, I. Turner","doi":"10.26492/gbs74(1).2022-03","DOIUrl":"https://doi.org/10.26492/gbs74(1).2022-03","url":null,"abstract":"Past studies of the genus Boerhavia in Singapore have listed Boerhavia diffusa L. as the only Boerhavia species with glandular anthocarps in Singapore. However, recent field collections and a study of herbarium specimens have uncovered the presence of two taxa hitherto included under the name ‘Boerhavia diffusa’ in Singapore. All material previously identified as Boerhavia diffusa in Singapore is Boerhavia repens L. More recently collected material, however, is the first actual material of Boerhavia diffusa for Singapore and is consequently a new record. A similar misapplication of the name Boerhavia diffusa also applies in Peninsular Malaysia. In light of this nomenclatural confusion pertaining to specimens in Singapore and Peninsular Malaysia, we clarify the use of the name Boerhavia diffusa L., resurrect the use of the name Boerhavia repens L., and provide a taxonomic revision and identification key for Boerhavia in Singapore.","PeriodicalId":216739,"journal":{"name":"Gardens' Bulletin Singapore","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129424367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Additions to the Flora of Singapore: New and overlooked records of casual and naturalised plant species (6)","authors":"D. Middleton, S. Atkins, H. Beentje, L.M.J. Chen, L. M. Choo, R. de Kok, W. de Wilde, B. Duyfjes, B. Ho, S. Lindsay, H. K. Lua","doi":"10.26492/gbs74(1).2022-05","DOIUrl":"https://doi.org/10.26492/gbs74(1).2022-05","url":null,"abstract":"Nine non-indigenous casual or naturalised species are newly recorded for Singapore: Justicia pectinata L. (Acanthaceae), Lepidagathis cephalotes (Link) Kuntze (Acanthaceae), Ruellia prostrata Poir. (Acanthaceae), Acmella ciliata (Kunth) Cass. (Asteraceae), Tilesia baccata (L.) Pruski (Asteraceae), Wollastonia asperrima Decne. (Asteraceae), Merremia gemella (Burm.f.) Hallier f. (Convolvulaceae), Momordica cochinchinensis (Lour.) Spreng. (Cucurbitaceae) and Verbena brasiliensis Vell. (Verbenaceae). Descriptions, notes on the distribution, and ecology are provided for all species, while colour plates are provided for four species.","PeriodicalId":216739,"journal":{"name":"Gardens' Bulletin Singapore","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127164812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flora of Singapore: Checklist and bibliography","authors":"S. Lindsay","doi":"10.26492/gbs74(suppl.1).2022-01","DOIUrl":"https://doi.org/10.26492/gbs74(suppl.1).2022-01","url":null,"abstract":"A checklist of all species of bryophytes, lycophytes, ferns, gymnosperms and angiosperms that are found in the wild (native, naturalised and casual) in Singapore is presented. We have attempted to account for all names of species and infraspecific taxa that have ever been recorded for Singapore, along with the pertinent publications that reported each of these names. For each currently accepted name, the synonyms of relevance for Singapore are included. The native or non-native status for all taxa is given, along with the most recent national conservation assessment applied to each native taxon. If we were aware that the most recent assessment required an update, the taxon is newly assessed here. The checklist includes 2654 native taxa, 479 naturalised/casual taxa and 101 cryptogenic taxa.","PeriodicalId":216739,"journal":{"name":"Gardens' Bulletin Singapore","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123994163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}