シンガポール新産 Rhynchospora submarginata

  Rhynchospora submarginata, an overlooked native Cyperaceae record for the Flora of Singapore 

doi: 10.26492/gbs78.2026-04

Y.W. Jong, E.X.Y. Lew, L.M.J. Chen, B.C. Ho & T.T.N. Phan

Gardens’ Bulletin Singapore 78: 35–41. 2026

Rhynchospora submarginata Kük.
— TYPE: Australia, s.d., R. Brown s.n. (lectotype K [K 001057250], designated by Lima Alves et al., Phytotaxa 661(3): 246, fig. 9 (2024)).

SINGAPORE: 
Jurong: Land between Chinese Garden MRT and Chinese Garden, near the sheltered linkway, 3 Oct. 2025, Jong LCMJ 2025-001 (SING [SING0407568]). 
Kranji: Wasteland beside Kranji Road, 7 Nov. 2024, Jong LCMJ 2024015 (SING [SING0407567]). 
Tampines: Land between Tampines Avenue 8 & Avenue 10, 29 Dec. 2001, Vermeulen & Ang 2216 (SING [SING0043691]); Tampines Avenue 8 wasteland, 10 May 2005, Duistermaat et al. HDS 366 (SING [SING0080183]); ibidem, 10 May 2005, Duistermaat et al. HDS 379 (SING [SING0080199]). 
Woodlands: Open grassland bounded by Woodgrove Avenue, Rosewood Drive & Seletar Epressway, 8 Mar. 2024, Lew & Chen LCMJ 2024-014 (SING [SING0407566]).

 シンガポール　ジュロン地区

https://maps.app.goo.gl/CJSFdU4eJTZgo8dE7

ネパール マカルーバルン国立公園のカヤツリグサ科植物

Notes on the Botanical Expedition to Makalu-Barun National Park
(Eastern Nepal), with Two New Records for the Flora of Nepal

https://doi.org/10.3126/bdpr.v24i1.96583

Amrit KC & Prabin Bhandari

Journal of Plant Resources 24(1): 1-18 (2026).

Blysmus compressus var. brevifolius
Bulbostylis densa イトテンツキ　
Carex baccans　ヒエボスゲ　
Carex bonatiana
Carex cercostachys
Carex cruenta
Carex curticeps
Carex deasyi
Carex esbirajbhandarii
Carex esenbeckii
Carex fucata
Carex gracilenta
Carex haematostoma
Carex harae
Carex himalaica
Carex inanis
Carex munda
Carex neesii
Carex obscura
Carex parvula
Carex rara　マツバスゲシノニム基本種
Carex rochebrunei ヤブスゲ 
Carex uncinioides
Eleocharis congesta　オオハリイ　広義
Fimbristylis complanata　ノテンツキ　広義
Fimbristylis dichotoma　テンツキ　広義
Scleria terrestris　オオシンジュガヤ　

ネパール　マカルーバルン国立公園 -Google map-
https://maps.app.goo.gl/JHKWBkesb1fYH3g6A

ノグサの新染色体数とその系統

There Is More to the Taxonomy of Schoenus apogon (Cyperaceae) Than Meets the Eye: An Unresolved Complex With Cytological Diversity

https://doi.org/10.1002/nzb2.70124

Yu Ito, Norio Tanaka, Jeremy J. Bruhl, Karen L. Wilson, Okihito Yano

New Zealand Journal of Botany e70124　(2026).

ノグサ　Schoenus apogon: 
2n= 8 (New Zea land)
2n=18 (Japan), 新染色体数追加 16, 17.
2n=10, 20 (Australia) 新染色体数

祖先的な染色体数: 
 2n=10

種内異数性から別種が見いだせる可能性があったが、S. apogon 種群全体としては単系統だったため、S. apogonにまとめる提案。

シンガポール ウビン島のカヤツリグサ科植物

An update on the vascular flora of Pulau Ubin, Singapore

ISBN: 978-981-94-6413-5 (2026).

R.C.H. Teo, Ali Ibrahim, Bazilah Ibrahim, B.C. Ho, S.L. Koh3, H.K. Lua

NATIONAL PARKS BOARD Singapore Botanic Gardens

Actinoscirpus grossus オオサンカクイ
Bulbostylis barbata  ハタガヤ　
Bulbostylis thouarsii 
Cyperus brevifolius アイダクグ　
Cyperus compactus ビトウクグ　
Cyperus compressus  クグガヤツリ　
Cyperus cyperinus シマクグ　
Cyperus diffusus  オオノシスゲ　
Cyperus haspan コアゼガヤツリ　広義
Cyperus imbricatus オオガヤツリ　
Cyperus javanicus オニクグ　
Cyperus mindorensis オオヒメクグ　
Cyperus polystachyos イガガヤツリ
Cyperus rotundus ハマスゲ
Cyperus trialatus
Fimbristylis acuminata ハリテンツキ
Fimbristylis complanata　ノテンツキ
Fimbristylis cymosa シオカゼテンツキ　広義
Fimbristylis dichotoma テンツキ
Fimbristylis ferruginea
Fimbristylis griffithii 
Fimbristylis polytrichoides タカオテンツキ
Fimbristylis schoenoides カギテンツキ
Fuirena umbellata　ヒロハノクロタマガヤツリ
Hypolytrum nemorum var. nemorum　スゲガヤ　変種
Scleria ciliaris ホソボシンジュガヤ
Scleria levis シンジュガヤ　
Scleria oblata
Scleria rugosa ケシンジュガヤ基本種
Scleria sumatrensis　クロミノシンジュガヤ

シンガポール　ウビン島 -Google map-
https://maps.app.goo.gl/F9wqJDD8qHMvH1iSA

イネ目の進化における交雑と倍数性の足跡をさぐる

Phylogenomics resolves the backbone of Poales and identifies signals of hybridization and polyploidy

https://doi.org/10.1016/j.ympev.2024.108184

Huijun Wang, Zhigang Wu, Tao Li, 
Jindong Zhao

Molecular Phylogenetics and Evolution
200: 108184 (2024).

イネ目約2万種から14科85種を用いて系統解析をおこなったところ、26回の倍数化があったことが示唆された。

インド ハルドイ県にあるサンディ鳥獣保護区のカヤツリグサ科植物

Floristic Diversity of Sandi Bird　Sanctuary,　Uttar　Pradesh,　India

https://doi.org/10.51470/ER.2025.7.2.104

Vineet Kumar Singh, Shubham Kumar, Atul Kumar Anand and Alka Kumari

Enviromental Reports (2025).

Cyperus alopecuroides  オキナワオオガヤツリ
Cyperus corymbosus
Cyperus difformis タマガヤツリ
Cyperus exaltatus カンエンガヤツリ　広義
Cyperus imbricatus　オオガヤツリ　
Cyperus nutans　ヒメホウキガヤツリ　基本種
Cyperus rotundus　ハマスゲ
Eleocharis acutangula　ミスミイ
Eleocharis atropurpurea　クロミノハリイ　
Eleocharis dulcis　イヌクログワイ　
Fimbristylis dichotoma　テンツキ
Fimbristylis littoralis　ヒデリコ
Fimbristylis ovata　ヤリテンツキ
Fimbristylis squarrosa　アゼテンツキ
Scirpus tuberosus

インド ウッタル・プラデーシュ州 ハルドイ県 -Google map-
https://maps.app.goo.gl/ervb15abvnQBXCfG7

ハリイ属Maculosae連のタイプ指定

Typifications in Eleocharis ser. Maculosae (Cyperaceae)

https://doi.org/10.1080/23818107.2026.2683424

Diego Costa Farias & Marccus Alves

Botany Letters, 1–14 (2026).

24 lectotypifications 
based on analyses of collections deposited at the AMD, B*, BM, BR*, BRI-AQ, C*, ETH, G, GH, GOET, HAL, HBG*, HOH, K*, L, LD, M*, MPU, NY, P*, S, SGO, TUB, US, and WAG.

1. Eleocharis bahamensis Boeckeler, Beitr. Cyper. 2: 11 (1890)
Type
– BAHAMAS, Hog Islands, Eggers 4101 (Lectotype, designated here, B 10 0296601 A!; isolectotypes: K000632246!, NY00051092 image!).


2. Eleocharis capillacea Kunth, Enum. Pl. 2: 139 (1837).
Type
– BRAZIL, Sellow s.n. (Lectotype, designated here, B 10 1334850b!; isolectotypes: K000189926!, GH00027789 image!).


3. Eleocharis dispar E.J.Hill, Bot. Gaz. 7(1): 3 (Citation1882)
Type
– UNITED STATES, Indiana, Hill s.n. (Lectotype, designated here, ILL00009867 image!; isolectotypes: NY51023 image!, US86884 image!).


4. Eleocharis dussiana Boeckeler, Allg. Bot. Z. 2: 54 (1896)
Type
– MARTINIQUE, Duss s.n. (Lectotype, designated here, (or perhaps holotype), B 10 1296790!).


5. Eleocharis hyalinovaginata Boeckeler, Allg. Bot. Z. 2: 53 (1896)
Type
CHILE, Reiche s.n. (Lectotype, designated here, (or perhaps holotype), B 10 1334847!).


6. Eleocharis lereschii Shuttlew., Bot. Zeit. 20: 241 (1837)
Type
– SWITZERLAND, Leresche s.n. (Lectotype, designated here, BM001082080 image!).


7. Eleocharis madagascariensis Cherm., Bull. Soc. Bot. France 75: 284–285 (1928)
Type
– MADAGASCAR, Sambirano region, Perrier de la Bâthie 2646 (Lectotype, designated here, P01888066!; isolectotype: P00459948!); syntypes: Viguier et Humbert 410 (B 10 0166705!, B 10 0166706!, P00697814!, P00459947!, P01888062!, P00731218!); Perrier de la Bâthie 17630 (B 10 0166707!, P00697813!, P01888064!); Perrier de la Bâthie 17985 (P01888065!); Perrier de la Bâthie 16646 (P01888063!, P00697812!).


8. Eleocharis melanosperma Steud., Syn. Pl. Glumac. 2(7): 78 (1854)
Type. – BRAZIL, Bahia, Salzmann s.n (Lectotype, designated here, HAL0134528 image!).


9. Eleocharis mendoncae Boeckeler, Beitr. Cyper. 2: 12 (1890)
Type
– BRAZIL, Mendonca s.n (Lectotype, designated here, (or perhaps holotype), B 10 0244263!).


10. Eleocharis minuta Boeckeler, Bot. Jahrbücher 5(5): 503 (Boeckeler Citation1884)
Type
– MADAGASCAR, prov. Imerina, Hildebrandt 3527 (Lectotype, designated here, B 10 0166699!; isolectotypes: AMD.65456 image!, B 10 0166700!, BR5571857!, BRI-AQ0340949 image!, G00018580 image!, G00018581 image!, GOET002879 image!, K000416643!, M0106946!, M0106948!, P00459950!, P00459951!, US00037490 image!).


11. Eleocharis monandra Hochst. ex Steud., Syn. Pl. Glumac. 2(7): 75 (1854)
Type
– SUDAN, Kotschy 129 (Lectotype, designated here, P00573283!; isolectotypes: B 10 0296605!, BR8639332!, ETH265 image!, G00018583 image!, G00018584 image!, GH00027805 image!, GOET002874 image!, HAL0109651 image!, HBG524955!, HOH009051 image!, K000416632!, L0042490 image!, L0042491 image!, LD1064214 image!, M0106950!, M0106951!, MPU028165 image!, MPU028166 image!, P00573283!, P00573284!, P00573285!, S13-31037 image!, TUB007314 image!, US0018583 image!, WAG1762546 image!).


12. Eleocharis multiflora Chapm., Fl. South. U.S. 517–518 (Chapman Citation1860)
Type
– UNITED STATES, Florida, Chapman s.n. (Lectotype, designated here, NY00039421 image!; isolectotypes: GH00027752 image!, K000881816!).


13. Eleocharis sellowiana Kunth, Enum. Pl. 2: 149 (Kunth Citation1837)
Type
– BRAZIL, Sellow s.n. (Lectotype, designated here, K000632216!; isolectotypes: B 10 1334852!, G00098329 image!).


14. Eleocharis setacea R. Br., Prodr. 225 (1810)
Type
– AUSTRALIA, Banks s.n. (Lectotype, designated here, (or perhaps holotype), BM990855 image!).


15. Eleocharis shaferi Britton, Mem. Torrey Bot. Club 16: 59–60 (Britton and Torrey Botanical Club Citation1920)
Type
– CUBA, Sierra de Nipe, Shafer 3414 (Lectotype, designated here, NY51100 image!; isolectotype: NY51099 image!).


16. Eleocharis vincentina Phil., Anales Univ. Chile 93: 348 (Citation1896)
Type
– CHILE, San Vicente, Philippi s.n. (Lectotype, designated here, SGO913 image!, isolectotype: SGO912 image!).


17. Isolepis fuscopurpurea Steud., Syn. Pl. Glumac. 2: 99 (1855)
Type
– CHILE, Philippi 265 (Lectotype, designated here, P00227192!; isolectotypes: G00098335 image!, GOET002875 image!, P00227193!, P00227195!).


18. Scirpus atrofructus Steud., Syn. Pl. Glumac. 2(10): 317 (1855)., as “atrofractus”, sphalm
Type
– UNITED STATES, Texas?, Drummond 446 (Lectotype, designated here, (or perhaps holotype), P00228450!).


19. Scirpus atropurpureus Retz., Observ. Bot. 5: 14 (Citation1788)
Type
– INDIA, König s.n. (Lectotype, designated here, LD1284587 image!; isolectotype: BM959043 image!).


20. Scirpus bahiensis Steud., Syn. Pl. Glumac. 2(8–9): 83 (1855)
Type
– BRAZIL, Bahia, Salzmann s.n. (Lectotype, designated here, P00227157!; isolectotypes: K000189244!, P00227158!, P00227159!, P00227160!, P00227161!, P00227162!).


21. Scirpus caducus Delile, Descr. Egypte, Hist. Nat. 153 (1813)
Type
– EGYPT, Delile s.n. (Lectotype, designated here, MPU007347 image!; isolectotypes: AMD65456 image!, B 10 0166708!, BM000922553 image!, G00190014 image!, MPU007345 image!, MPU007346 image!, MPU007348 image!, P00568827!, P00568828!, P00568829!).


22. Scirpus caribaeus Rottb., Descr. Pl. Rar. 24 (1772)
Type
– Unknown (Lectotype, designated here, (or perhaps holotype), C10010366!).


23. Scirpus flavescens Poir., Encycl. 6(2): 756 (Citation1805)
Type
– PUERTO RICO, Ledru s.n. (Lectotype, designated here, P00130500!; isolectotype: P00227099 image!, P00227100 image!, P00563560 image!).


24. Scirpus gaudichaudianus Kunth, Enum. Pl. 2: 157 (1837)
Type
– BRAZIL, Rio de Janeiro, Gaudichaud s.n. (Lectotype, designated here, P00227169!; isolectotypes: P00227167!, P00227168!).