(2780) Blechnum indicum Burm. f., Fl. Ind.: 231. 1 Mar–6 Apr 1768, nom. cons. prop.

Typus: Australia. New South Wales: Evans Head behind surf shed, 18 Nov 1972, R. Coveny 4712 (NSW barcode NSW267420; isotypi: A, AD barcode AD97450139, BM barcode BM001048200, BRI barcode BRI‐AQ0020702, G barcode G00600035, K barcodes K0010902743 & K001092744, L 2D‐Code L.3526842, LE, TNS, UC barcode UC 1431736), typ. cons. prop.

Blechnum indicum Burm. f. (Fl. Ind.: 231. 1768), currently accepted under the name Telmatoblechnum indicum (Burm. f.) Perrie & al. (in Taxon 63: 755. 2014), is widely distributed from Southeast Asia through Malesia and Melanesia, also occurring in coastal northern and eastern Australia.

The name Blechnum indicum has been widely used, for example by Holttum (Rev. Fl. Malaya 2: 446. 1955), Brownlie (in Aubreville, Fl. Nouv.‐Calédonie & Dépend. 3: 235. 1969), Tagawa & Iwatsuki (in Acta Phytotax. Geobot. 25: 18. 1971, in Smitinand & Larsen, Fl. Thailand 3: 300. 1988), Andrews (Ferns Queensland: 90. 1990), Chambers & Farrant (in Fl. Australia 48: 372, 710. 1998), Boonkerd & Pollawatn (Pterid. Thailand: 146. 2000) and Nooteboom & al. (in Fl. Males., Ser. 2, 4: 34. 2012), whereas the most recent treatment of the family Blechnaceae (Gasper & al. in Phytotaxa 275: 201. 2016) accepted this taxon in the genus Telmatoblechnum.

As part of our study on the ferns described in N.L. Burman's Flora Indica (Mazumdar & al. in Candollea 74: 93–109. 2019), we re‐examined the original material of this species. Original material of Burman's Flora Indica comprised collections from the herbarium he shared with his father J. Burman and illustrations published in various pre‐Linnaean works. This herbarium is now housed at G (Pre‐Linnaean collection G‐PREL; some specimens also in the Candolle herbarium [G‐DC, G] through B. Delessert) and at the Institut de France in Paris (BIF‐CEYL, consisting of a Paul Hermann herbarium from Ceylon bound in a folio volume) (Mazumdar & al., l.c.: 94).

Burman's description of Blechnum indicum (l.c.: 231) was based on a Pryon collection from Java. A single Pryon specimen related to this name is extant in G‐PREL (G00800023). It bears, in Pryon's typical handwriting, the polynomial cited in the protologue (“Filix lonchitidis facie alis denticulatis dupliciter auriculatis”), as well as the species name in Burman's hand, and perfectly matches the description: “frondibus pinnatis, pinnis alternis lanceolatis serratis, basi auriculatis”. It is the only material positively related to the protologue and thus must be considered the type, as already stated by D.O. Wijnands (label on sheet dated 1991).

Unfortunately, the single frond represented on this sheet turned out to be referable to Asplenium longissimum Blume (Enum. Pl. Javae 2: 178. 1828), as correctly identified by F. Ballard (label on sheet dated 10.09.1951), a species widespread from Assam to Western and Central Malesia, also occurring in the Chagos Archipelago.

Chambers & Farrant (l.c. 1998: 710) were aware of the existence of the original material in the Geneva herbarium and Ballard's identification, but erroneously thought that the type was lost and had been replaced by the Pryon specimen mentioned above, which would not match the description of the species and thus the plants currently known as Blechnum indicum, but the widespread Asplenium longissimum: “It appears that the holotype of B. indicum from Java was lost, and that a specimen of Asplenium longissimum Blume (annotated in 1951 by Mr. F. Ballard at Kew) was attached to Burman's herbarium sheet at G. However Burman's brief Latin diagnosis fits B. indicum” (see also Chambers & Farrant in Blumea 46: 315. 2001). They (l.c. 1998: 710) therefore designated an Australian specimen at NSW as neotype for Blechnum indicum (R. Coveny 4712, NSW barcode NSW267420): “There are no specimens from Java in BM, K, L or NSW, so we have chosen an Australian specimen which is consistent with Indonesian material and which has numerous well distributed duplicates.” To our knowledge, Blechnum indicum has still not been found in Java, contrary to Asplenium longissimum.

As the Pryon specimen clearly represents the type of Burman's name, making it the oldest available name for Asplenium longissimum, Chambers & Farrant's neotypification cannot be accepted. Therefore, in order to enable further use of Asplenium longissimum and of Blechnum indicum in its current sense and to preserve nomenclatural stability in accordance with ICN Art. 14.2 (Turland & al. in Regnum Veg. 159. 2018), we propose to conserve the name Blechnum indicum, retaining Chambers & Ferrant's neotype as conserved type.

（2780）Blechnum indicum Burm。楼 印度：231。1768年3月1日至4月6日，标价。缺点 支柱。

类型：澳大利亚。新南威尔士州：1972年11月18日，Evans Head在冲浪棚后面，R.Coveny 4712（NSW条码NSW267420;同型：A，AD条码AD97450139，BM条码BM001048200，BRI条码BRI‐AQ0020702，G条码G00600035，K条码K0010902743和K001092744744 ，L 2D代码L.3526842，LE，TNS，UC条码UC 1431736），典型。缺点 支柱。

臭柏。F。（Fl。Ind .: 231. 1768），目前以Telmatoblechnum indicum（Burm。f。）的名义被接受。（Taxon 63：755. 2014），从东南亚到马来西亚和美拉尼西亚广泛分布，也分布在澳大利亚北部和东部沿海地区。

Blechnum indicum这个名称已被广泛使用，例如Holttum（Rev. Fl。Malaya 2：446. 1955），Brownlie（in Fl。Nouv.-Calédonie＆Dépend。3：235. 1969），Tagawa＆Iwatsuki （Acta Phytotax。Geobot。25：18. 1971，in Smitinand＆Larsen，Fl。Thailand 3：300. 1988），Andrews（Ferns Queensland：90. 1990），Chambers＆Farrant（in Fl.Australia 48：372， 710. 1998），Boonkerd＆Pollawatn（Pterid。Thailand：146。2000）和Nooteboom等。（Fl。Males。，Ser。2，4：34. 2012），而对桔梗科的最新治疗方法（Gasper等人在Phytotaxa 275：201。2016）在Telmatoblechnum属中接受了这个分类单元。

作为对NL Burman的Flora Indica（Mazumdar等人在Candollea 74：93-109。2019）中描述的蕨类植物研究的一部分，我们重新检查了该物种的原始材料。Burman的Flora Indica原始材料包括他与父亲J. Burman分享的植物标本室的收藏，以及在林奈前期的各种作品中出版的插图。该植物标本室现在存放在G（Linnaean以前的收藏品G-PREL；一些标本也通过B. Delessert在Candolle植物标本室[G-DC，G]中）和巴黎的法兰西研究所（BIF-CEYL，包括（来自锡兰的Paul Hermann植物标本室，装在对开的书本中）（Mazumdar等，lc：94）。

布尔曼对Blechnum indicum（lc：231）的描述基于Java的Pryon集合。G‐PREL（G00800023）中存在与此名称相关的一个Pryon标本。它以Pryon的典型笔迹承载着原语中引用的多项式（“ Filix lonchitidis facie alis denticulatis dupliciter auriculatis”），以及Burman手中的物种名称，并与以下描述完全匹配：“ frondibus pinnatis，pinnis alternis lanceolatis serratis ，basi auriculatis”。它是唯一与原型正相关的材料，因此，必须将其视为类型，如DO Wijnands（1991年版纸上的标签）所述。

不幸的是，单个藻体在这张纸上表示原来是可参照到铁角蕨longissimum布卢姆（枚举PL Javae 2：178 1828），如通过正确F.巴拉德（上日1951年9月10日片标签）来标识，一个物种从阿萨姆邦到西部和中部马来西亚广泛分布，也发生在查戈斯群岛。

Chambers＆Farrant（lc 1998：710）知道日内瓦植物标本室和Ballard的鉴定中存在原始材料，但错误地认为该类型已丢失，并已被上述Pryon标本代替，与普利永标本不符。该物种的描述，因而也描述了目前称为Blechnum indicum的植物，但广泛的Asplenium longissimum：“看来Java的印度双歧杆菌B的全型已丢失，并且Aspennium longissimum Blume的标本（1951年由Mr. F.巴拉德基尤）在G.连接到缅的标本馆片然而缅的短暂拉丁诊断符合B.野菊”（另请参见《钱伯斯与法兰特》（《钱伯斯与法兰特》，Blumea 46：315。2001）。因此，他们（lc 1998：710）将新南威尔士州的澳大利亚标本指定为Blechnum indicum（R. Coveny 4712，NSW条形码NSW267420）的新型：“在BM，K，L或NSW中没有来自Java的标本，因此我们选择了一种澳大利亚标本，与印度尼西亚的材料一致，并且有很多分布良好的重复样本。” 据我们所知，与Asplenium longissimum相反，在Java中尚未发现Blechnum indicum。

由于Pryon标本清楚地代表了Burman名字的类型，使其成为Asaspnium longissimum的最古老名称，因此Chambers＆Farrant的新类型化不能被接受。因此，为了能够按照目前的意义进一步使用天竺葵和印度苦参，并根据ICN Art保留命名法稳定性。14.2（Turland等人于Regnum Veg。159. 2018）中，我们建议保留Blechnum indicum这个名称，保留Chambers＆Ferrant的新类型为保守类型。