01 / Morfologi

Ciri dan struktur

Saprobic on dead stems of Cirsium arvense (Asteraceae). Sexual morph Ascomata 230–270 μm high, 265–310 μm diam., scattered, solitary to gregarious, immersed, eventually erumpent, uni-loculate, globose to subglobose, dark brown to black, papillate. Ostiole central, short papilla, filled with periphyses. Peridium 25–60 μm wide, thick-walled, composed of several cell layers of brown to dark brown cells, paler to hyaline towards the inner layers, outer layer comprising black, coriaceous stratum, arranged in a textura angularis. Hamathecium composed of numerous, 1–3 μm wide, filamentous, septate pseudoparaphyses, anastomosing at the apex, embedded in a gelatinous matrix. Asci 125–155 × 12–15 μm (\(\bar{x} \) = 140 × 12.5 μm, n = 20), 8-spored, bitunicate, cylindric-clavate, subsessile to short pedicellate, with knob-like or truncate pedicel, rounded at the apex, with a distinct ocular chamber. Ascospores 100–112 × 2.5–4.5 μm (\(\bar{x} \) = 107.5 × 3.5 μm, n = 50), fasciculate, in parallel or spiral, initially hyaline, becoming brown at maturity, guttulate, filiform, enlarged at the first cell with hammer-like, tapering towards the end cell, up to 15 septa, curved, slightly constricted at the septa at maturity, smooth-walled, with apical mucilaginous cap. Asexual morph Undetermined. Culture characteristics: Ascospores germinating on PDA, colony reaching 10 mm diam. after 2 weeks at room temperature (20–30 °C). Colony dense, irregular in shape, flattened to umbonate, surface smooth, with edge erose, velvety to floccose; from above, cream; from below, cream to pale yellowish; not producing pigmentation on agar medium.

Sebagian uraian ditampilkan dalam bahasa sumber; terjemahannya belum tersedia atau belum lolos pemeriksaan.

Rujukan: [1]

Pengukuran mengikuti objek, spesimen atau kultur, dan metode yang disebutkan sumber. Baca uraian asli untuk konteks lengkap.

02 / Kehidupan

Habitat dan peran ekologis

Saprobic on dead stems of Cirsium arvense (Asteraceae). Sexual morph Ascomata 230–270 μm high, 265–310 μm diam., scattered, solitary to gregarious, immersed, eventually erumpent, uni-loculate, globose to subglobose, dark brown to black, papillate. Ostiole central, short papilla, filled with periphyses. Peridium 25–60 μm wide, thick-walled, composed of several cell layers of brown to dark brown cells, paler to hyaline towards the inner layers, outer layer comprising black, coriaceous stratum, arranged in a textura angularis. Hamathecium composed of numerous, 1–3 μm wide, filamentous, septate pseudoparaphyses, anastomosing at the apex, embedded in a gelatinous matrix. Asci 125–155 × 12–15 μm (\(\bar{x} \) = 140 × 12.5 μm, n = 20), 8-spored, bitunicate, cylindric-clavate, subsessile to short pedicellate, with knob-like or truncate pedicel, rounded at the apex, with a distinct ocular chamber. Ascospores 100–112 × 2.5–4.5 μm (\(\bar{x} \) = 107.5 × 3.5 μm, n = 50), fasciculate, in parallel or spiral, initially hyaline, becoming brown at maturity, guttulate, filiform, enlarged at the first cell with hammer-like, tapering towards the end cell, up to 15 septa, curved, slightly constricted at the septa at maturity, smooth-walled, with apical mucilaginous cap.

Sebagian uraian ditampilkan dalam bahasa sumber; terjemahannya belum tersedia atau belum lolos pemeriksaan.

Rujukan: [1]

Habitat atau konteks temuan
Informasi belum tersedia pada sumber rilis ini.
Substrat
Informasi belum tersedia pada sumber rilis ini.
Peran atau konteks
Pengurai
Temukan hubungan serupa
03 / Siklus hidup

Reproduksi

Saprobic on dead stems of Cirsium arvense (Asteraceae). Sexual morph Ascomata 230–270 μm high, 265–310 μm diam., scattered, solitary to gregarious, immersed, eventually erumpent, uni-loculate, globose to subglobose, dark brown to black, papillate. Ostiole central, short papilla, filled with periphyses. Peridium 25–60 μm wide, thick-walled, composed of several cell layers of brown to dark brown cells, paler to hyaline towards the inner layers, outer layer comprising black, coriaceous stratum, arranged in a textura angularis. Hamathecium composed of numerous, 1–3 μm wide, filamentous, septate pseudoparaphyses, anastomosing at the apex, embedded in a gelatinous matrix. Asci 125–155 × 12–15 μm (\(\bar{x} \) = 140 × 12.5 μm, n = 20), 8-spored, bitunicate, cylindric-clavate, subsessile to short pedicellate, with knob-like or truncate pedicel, rounded at the apex, with a distinct ocular chamber.

Sebagian uraian ditampilkan dalam bahasa sumber; terjemahannya belum tersedia atau belum lolos pemeriksaan.

Rujukan: [1]

04 / Batas informasi

Catatan identitas dan cakupan

  • Nama diterima mengikuti Catalogue of Life Base2026-09-11; uraian mempertahankan konsep dan nama sumber aslinya.
  • Preserve original monograph treatment localities, hosts and specimen/substrate scope. Materials examined document specimens, not the full global range.
  • Impor dan terjemahan otomatis belum diperiksa editorial per profil. Struktur reproduktif yang disebutkan tidak membuktikan seluruh siklus hidup diketahui.
  • Pengukuran pada uraian mengikuti spesimen, kultur, dan metode sumber; angka tidak diperluas ke semua populasi.

Catatan distribusi dalam narasi mengikuti sumbernya. Dokumentasi spesimen atau foto mengikuti catatan sumber. Bukti wilayah Indonesia dan penilaian konservasi tidak disimpulkan dari gambar.

05 / Dokumentasi

Melihat dengan konteks

Ophiobolus malleolus (MFLU 15-2230, holotype) a Herbarium label. b Appearance of ascomata on Cirsium arvense stems. c Ascomata on host. d Ascoma in vertical section. e Peridium. f Pseudoparaphyses. g – i Developing stages of the asci. j – m Ascospores (note: m stained in Indian ink). Scale bars c = 500 µm, d = 100 µm, e = 50 µm, f–m = 20 µm

Jenis
Pelat ilmiah
Kredit
Penulis dan sumber artikel: Phookamsak, Rungtiwa; Hyde, Kevin D.; Jeewon, Rajesh; Bhat, D. Jayarama; Jones, E. B. Gareth; Maharachchikumbura, Sajeewa S. N.; Raspé, Olivier; Karunarathna, Samantha C.; Wanasinghe, Dhanushka N.; Hongsanan, Sinang; Doilom, Mingkwan; Tennakoon, Danushka S.; Machado, Alexandre R.; Firmino, André L.; Ghosh, Aniket; Karunarathna, Anuruddha; Mešić, Armin; Dutta, Arun Kumar; Thongbai, Benjarong; Devadatha, Bandarupalli; Norphanphoun, Chada; Senwanna, Chanokned; Wei, Deping; Pem, Dhandevi; Ackah, Frank Kwekucher; Wang, Gen-Nuo; Jiang, Hong-Bo; Madrid, Hugo; Lee, Hyang Burm; Goonasekara, Ishani D.; Manawasinghe, Ishara S.; Kušan, Ivana; Cano, Josep; Gené, Josepa; Li, Junfu; Das, Kanad; Acharya, Krishnendu; Raj, K. N. Anil; Latha, K. P. Deepna; Chethana, K. W. Thilini; He, Mao-Qiang; Dueñas, Margarita; Jadan, Margita; Martín, María P.; Samarakoon, Milan C.; Dayarathne, Monika C.; Raza, Mubashar; Park, Myung Soo; Telleria, M. Teresa; Chaiwan, Napalai; Matočec, Neven; de Silva, Nimali I.; Pereira, Olinto L.; Singh, Paras Nath; Manimohan, Patinjareveettil; Uniyal, Priyanka; Shang, Qiu-Ju; Bhatt, Rajendra P.; Perera, Rekhani H.; Alvarenga, Renato Lúcio Mendes; Nogal-Prata, Sandra; Singh, Sanjay K.; Vadthanarat, Santhiti; Oh, Seung-Yoon; Huang, Shi-Ke; Rana, Shiwali; Konta, Sirinapa; Paloi, Soumitra; Jayasiri, Subashini C.; Jeon, Sun Jeong; Mehmood, Tahir; Gibertoni, Tatiana Baptista; Nguyen, Thuong T. T.; Singh, Upendra; Thiyagaraja, Vinodhini; Sarma, V. Venkateswara; Dong, Wei; Yu, Xian-Dong; Lu, Yong-Zhong; Lim, Young Woon; Chen, Yun; Tkalčec, Zdenko; Zhang, Zhi-Feng; Luo, Zong-Long; Daranagama, Dinushani A.; Thambugala, Kasun M.; Tibpromma, Saowaluck; Camporesi, Erio; Bulgakov, Timur S.; Dissanayake, Asha J.; Senanayake, Indunil C.; Dai, Dong Qin; Tang, Li-Zhou; Khan, Sehroon; Zhang, Huang; Promputtha, Itthayakorn; Cai, Lei; Chomnunti, Putarak; Zhao, Rui-Lin; Lumyong, Saisamorn; Boonmee, Saranyaphat; Wen, Ting-Chi; Mortimer, Peter E.; Xu, Jianchu
Lisensi
CC BY 4.0
Sumber media
Buka entri sumber

Gambar menunjukkan objek menurut identifikasi sumber, bukan verifikasi independen spesimen oleh Fungi. Tidak ada skala baru yang ditambahkan.

06 / Rujukan

Sumber profil

  1. [1] Fungal diversity notes 929–1035: taxonomic and phylogenetic contributions on genera and species of fungi — Ophiobolus malleolusBagian sumber: publisher:10.1007/s13225-019-00421-w:paragraph:382
    Tanggal penghimpunan sumber: 2026-10-12
    Teks sumber: CC BY 4.0 · Phookamsak, Rungtiwa; Hyde, Kevin D.; Jeewon, Rajesh; Bhat, D. Jayarama; Jones, E. B. Gareth; Maharachchikumbura, Sajeewa S. N.; Raspé, Olivier; Karunarathna, Samantha C.; Wanasinghe, Dhanushka N.; Hongsanan, Sinang; Doilom, Mingkwan; Tennakoon, Danushka S.; Machado, Alexandre R.; Firmino, André L.; Ghosh, Aniket; Karunarathna, Anuruddha; Mešić, Armin; Dutta, Arun Kumar; Thongbai, Benjarong; Devadatha, Bandarupalli; Norphanphoun, Chada; Senwanna, Chanokned; Wei, Deping; Pem, Dhandevi; Ackah, Frank Kwekucher; Wang, Gen-Nuo; Jiang, Hong-Bo; Madrid, Hugo; Lee, Hyang Burm; Goonasekara, Ishani D.; Manawasinghe, Ishara S.; Kušan, Ivana; Cano, Josep; Gené, Josepa; Li, Junfu; Das, Kanad; Acharya, Krishnendu; Raj, K. N. Anil; Latha, K. P. Deepna; Chethana, K. W. Thilini; He, Mao-Qiang; Dueñas, Margarita; Jadan, Margita; Martín, María P.; Samarakoon, Milan C.; Dayarathne, Monika C.; Raza, Mubashar; Park, Myung Soo; Telleria, M. Teresa; Chaiwan, Napalai; Matočec, Neven; de Silva, Nimali I.; Pereira, Olinto L.; Singh, Paras Nath; Manimohan, Patinjareveettil; Uniyal, Priyanka; Shang, Qiu-Ju; Bhatt, Rajendra P.; Perera, Rekhani H.; Alvarenga, Renato Lúcio Mendes; Nogal-Prata, Sandra; Singh, Sanjay K.; Vadthanarat, Santhiti; Oh, Seung-Yoon; Huang, Shi-Ke; Rana, Shiwali; Konta, Sirinapa; Paloi, Soumitra; Jayasiri, Subashini C.; Jeon, Sun Jeong; Mehmood, Tahir; Gibertoni, Tatiana Baptista; Nguyen, Thuong T. T.; Singh, Upendra; Thiyagaraja, Vinodhini; Sarma, V. Venkateswara; Dong, Wei; Yu, Xian-Dong; Lu, Yong-Zhong; Lim, Young Woon; Chen, Yun; Tkalčec, Zdenko; Zhang, Zhi-Feng; Luo, Zong-Long; Daranagama, Dinushani A.; Thambugala, Kasun M.; Tibpromma, Saowaluck; Camporesi, Erio; Bulgakov, Timur S.; Dissanayake, Asha J.; Senanayake, Indunil C.; Dai, Dong Qin; Tang, Li-Zhou; Khan, Sehroon; Zhang, Huang; Promputtha, Itthayakorn; Cai, Lei; Chomnunti, Putarak; Zhao, Rui-Lin; Lumyong, Saisamorn; Boonmee, Saranyaphat; Wen, Ting-Chi; Mortimer, Peter E.; Xu, Jianchu
  2. [2] Catalogue of Life Base2026-09-11 — Ophiobolus malleolusBagian sumber: ColDP NameUsage.tsv ID 49W2X; accepted species; source 2073
    Tanggal penghimpunan sumber: 2026-10-12
  3. [3] Dokumentasi visual — Ophiobolus malleolusBagian sumber: Individual media record; identification follows the source, not independent determination
    Tanggal penghimpunan sumber: 2026-10-12
    Media sumber: CC BY 4.0 · Penulis dan sumber artikel: Phookamsak, Rungtiwa; Hyde, Kevin D.; Jeewon, Rajesh; Bhat, D. Jayarama; Jones, E. B. Gareth; Maharachchikumbura, Sajeewa S. N.; Raspé, Olivier; Karunarathna, Samantha C.; Wanasinghe, Dhanushka N.; Hongsanan, Sinang; Doilom, Mingkwan; Tennakoon, Danushka S.; Machado, Alexandre R.; Firmino, André L.; Ghosh, Aniket; Karunarathna, Anuruddha; Mešić, Armin; Dutta, Arun Kumar; Thongbai, Benjarong; Devadatha, Bandarupalli; Norphanphoun, Chada; Senwanna, Chanokned; Wei, Deping; Pem, Dhandevi; Ackah, Frank Kwekucher; Wang, Gen-Nuo; Jiang, Hong-Bo; Madrid, Hugo; Lee, Hyang Burm; Goonasekara, Ishani D.; Manawasinghe, Ishara S.; Kušan, Ivana; Cano, Josep; Gené, Josepa; Li, Junfu; Das, Kanad; Acharya, Krishnendu; Raj, K. N. Anil; Latha, K. P. Deepna; Chethana, K. W. Thilini; He, Mao-Qiang; Dueñas, Margarita; Jadan, Margita; Martín, María P.; Samarakoon, Milan C.; Dayarathne, Monika C.; Raza, Mubashar; Park, Myung Soo; Telleria, M. Teresa; Chaiwan, Napalai; Matočec, Neven; de Silva, Nimali I.; Pereira, Olinto L.; Singh, Paras Nath; Manimohan, Patinjareveettil; Uniyal, Priyanka; Shang, Qiu-Ju; Bhatt, Rajendra P.; Perera, Rekhani H.; Alvarenga, Renato Lúcio Mendes; Nogal-Prata, Sandra; Singh, Sanjay K.; Vadthanarat, Santhiti; Oh, Seung-Yoon; Huang, Shi-Ke; Rana, Shiwali; Konta, Sirinapa; Paloi, Soumitra; Jayasiri, Subashini C.; Jeon, Sun Jeong; Mehmood, Tahir; Gibertoni, Tatiana Baptista; Nguyen, Thuong T. T.; Singh, Upendra; Thiyagaraja, Vinodhini; Sarma, V. Venkateswara; Dong, Wei; Yu, Xian-Dong; Lu, Yong-Zhong; Lim, Young Woon; Chen, Yun; Tkalčec, Zdenko; Zhang, Zhi-Feng; Luo, Zong-Long; Daranagama, Dinushani A.; Thambugala, Kasun M.; Tibpromma, Saowaluck; Camporesi, Erio; Bulgakov, Timur S.; Dissanayake, Asha J.; Senanayake, Indunil C.; Dai, Dong Qin; Tang, Li-Zhou; Khan, Sehroon; Zhang, Huang; Promputtha, Itthayakorn; Cai, Lei; Chomnunti, Putarak; Zhao, Rui-Lin; Lumyong, Saisamorn; Boonmee, Saranyaphat; Wen, Ting-Chi; Mortimer, Peter E.; Xu, Jianchu

Adaptasi teks: CC BY 4.0. Phookamsak, Rungtiwa; Hyde, Kevin D.; Jeewon, Rajesh; Bhat, D. Jayarama; Jones, E. B. Gareth; Maharachchikumbura, Sajeewa S. N.; Raspé, Olivier; Karunarathna, Samantha C.; Wanasinghe, Dhanushka N.; Hongsanan, Sinang; Doilom, Mingkwan; Tennakoon, Danushka S.; Machado, Alexandre R.; Firmino, André L.; Ghosh, Aniket; Karunarathna, Anuruddha; Mešić, Armin; Dutta, Arun Kumar; Thongbai, Benjarong; Devadatha, Bandarupalli; Norphanphoun, Chada; Senwanna, Chanokned; Wei, Deping; Pem, Dhandevi; Ackah, Frank Kwekucher; Wang, Gen-Nuo; Jiang, Hong-Bo; Madrid, Hugo; Lee, Hyang Burm; Goonasekara, Ishani D.; Manawasinghe, Ishara S.; Kušan, Ivana; Cano, Josep; Gené, Josepa; Li, Junfu; Das, Kanad; Acharya, Krishnendu; Raj, K. N. Anil; Latha, K. P. Deepna; Chethana, K. W. Thilini; He, Mao-Qiang; Dueñas, Margarita; Jadan, Margita; Martín, María P.; Samarakoon, Milan C.; Dayarathne, Monika C.; Raza, Mubashar; Park, Myung Soo; Telleria, M. Teresa; Chaiwan, Napalai; Matočec, Neven; de Silva, Nimali I.; Pereira, Olinto L.; Singh, Paras Nath; Manimohan, Patinjareveettil; Uniyal, Priyanka; Shang, Qiu-Ju; Bhatt, Rajendra P.; Perera, Rekhani H.; Alvarenga, Renato Lúcio Mendes; Nogal-Prata, Sandra; Singh, Sanjay K.; Vadthanarat, Santhiti; Oh, Seung-Yoon; Huang, Shi-Ke; Rana, Shiwali; Konta, Sirinapa; Paloi, Soumitra; Jayasiri, Subashini C.; Jeon, Sun Jeong; Mehmood, Tahir; Gibertoni, Tatiana Baptista; Nguyen, Thuong T. T.; Singh, Upendra; Thiyagaraja, Vinodhini; Sarma, V. Venkateswara; Dong, Wei; Yu, Xian-Dong; Lu, Yong-Zhong; Lim, Young Woon; Chen, Yun; Tkalčec, Zdenko; Zhang, Zhi-Feng; Luo, Zong-Long; Daranagama, Dinushani A.; Thambugala, Kasun M.; Tibpromma, Saowaluck; Camporesi, Erio; Bulgakov, Timur S.; Dissanayake, Asha J.; Senanayake, Indunil C.; Dai, Dong Qin; Tang, Li-Zhou; Khan, Sehroon; Zhang, Huang; Promputtha, Itthayakorn; Cai, Lei; Chomnunti, Putarak; Zhao, Rui-Lin; Lumyong, Saisamorn; Boonmee, Saranyaphat; Wen, Ting-Chi; Mortimer, Peter E.; Xu, Jianchu — Fungal diversity notes 929–1035: taxonomic and phylogenetic contributions on genera and species of fungi — Ophiobolus malleolus

Uraian asli dan riwayat sumber

Riwayat atau halaman sumber

Ringkasan sumber

Saprobic on dead stems of Cirsium arvense (Asteraceae). Sexual morph Ascomata 230–270 μm high, 265–310 μm diam., scattered, solitary to gregarious, immersed, eventually erumpent, uni-loculate, globose to subglobose, dark brown to black, papillate. Ostiole central, short papilla, filled with periphyses. Peridium 25–60 μm wide, thick-walled, composed of several cell layers of brown to dark brown cells, paler to hyaline towards the inner layers, outer layer comprising black, coriaceous stratum, arranged in a textura angularis.

Revisi sumber

Morfologi sumber

Saprobic on dead stems of Cirsium arvense (Asteraceae). Sexual morph Ascomata 230–270 μm high, 265–310 μm diam., scattered, solitary to gregarious, immersed, eventually erumpent, uni-loculate, globose to subglobose, dark brown to black, papillate. Ostiole central, short papilla, filled with periphyses. Peridium 25–60 μm wide, thick-walled, composed of several cell layers of brown to dark brown cells, paler to hyaline towards the inner layers, outer layer comprising black, coriaceous stratum, arranged in a textura angularis. Hamathecium composed of numerous, 1–3 μm wide, filamentous, septate pseudoparaphyses, anastomosing at the apex, embedded in a gelatinous matrix. Asci 125–155 × 12–15 μm (\(\bar{x} \) = 140 × 12.5 μm, n = 20), 8-spored, bitunicate, cylindric-clavate, subsessile to short pedicellate, with knob-like or truncate pedicel, rounded at the apex, with a distinct ocular chamber. Ascospores 100–112 × 2.5–4.5 μm (\(\bar{x} \) = 107.5 × 3.5 μm, n = 50), fasciculate, in parallel or spiral, initially hyaline, becoming brown at maturity, guttulate, filiform, enlarged at the first cell with hammer-like, tapering towards the end cell, up to 15 septa, curved, slightly constricted at the septa at maturity, smooth-walled, with apical mucilaginous cap. Asexual morph Undetermined. Culture characteristics: Ascospores germinating on PDA, colony reaching 10 mm diam. after 2 weeks at room temperature (20–30 °C). Colony dense, irregular in shape, flattened to umbonate, surface smooth, with edge erose, velvety to floccose; from above, cream; from below, cream to pale yellowish; not producing pigmentation on agar medium.

Revisi sumber

Ekologi sumber

Saprobic on dead stems of Cirsium arvense (Asteraceae). Sexual morph Ascomata 230–270 μm high, 265–310 μm diam., scattered, solitary to gregarious, immersed, eventually erumpent, uni-loculate, globose to subglobose, dark brown to black, papillate. Ostiole central, short papilla, filled with periphyses. Peridium 25–60 μm wide, thick-walled, composed of several cell layers of brown to dark brown cells, paler to hyaline towards the inner layers, outer layer comprising black, coriaceous stratum, arranged in a textura angularis. Hamathecium composed of numerous, 1–3 μm wide, filamentous, septate pseudoparaphyses, anastomosing at the apex, embedded in a gelatinous matrix. Asci 125–155 × 12–15 μm (\(\bar{x} \) = 140 × 12.5 μm, n = 20), 8-spored, bitunicate, cylindric-clavate, subsessile to short pedicellate, with knob-like or truncate pedicel, rounded at the apex, with a distinct ocular chamber. Ascospores 100–112 × 2.5–4.5 μm (\(\bar{x} \) = 107.5 × 3.5 μm, n = 50), fasciculate, in parallel or spiral, initially hyaline, becoming brown at maturity, guttulate, filiform, enlarged at the first cell with hammer-like, tapering towards the end cell, up to 15 septa, curved, slightly constricted at the septa at maturity, smooth-walled, with apical mucilaginous cap.

Revisi sumber

Struktur reproduksi sumber

Saprobic on dead stems of Cirsium arvense (Asteraceae). Sexual morph Ascomata 230–270 μm high, 265–310 μm diam., scattered, solitary to gregarious, immersed, eventually erumpent, uni-loculate, globose to subglobose, dark brown to black, papillate. Ostiole central, short papilla, filled with periphyses. Peridium 25–60 μm wide, thick-walled, composed of several cell layers of brown to dark brown cells, paler to hyaline towards the inner layers, outer layer comprising black, coriaceous stratum, arranged in a textura angularis. Hamathecium composed of numerous, 1–3 μm wide, filamentous, septate pseudoparaphyses, anastomosing at the apex, embedded in a gelatinous matrix. Asci 125–155 × 12–15 μm (\(\bar{x} \) = 140 × 12.5 μm, n = 20), 8-spored, bitunicate, cylindric-clavate, subsessile to short pedicellate, with knob-like or truncate pedicel, rounded at the apex, with a distinct ocular chamber.

Revisi sumber

Rujukan halaman ini

Fungi. Ophiobolus malleolus. Rilis data fungi-2026-10-12-expansion-2. https://fungi-atlas.mgadib.chatgpt.site/jamur/ophiobolus-malleolus/.

Status: impor sumber; pemeriksaan editorial per profil belum selesai. Untuk klaim biologis, gunakan rujukan pada bagian terkait dan periksa konteks sumber aslinya.