Callitriche muelleri Sonder (1856: 229

Lansdown, Richard V., 2022, The genus Callitriche (Plantaginaceae, Callitricheae) in Australasia and Oceania, Phytotaxa 547 (3), pp. 243-284 : 261-263

publication ID	https://doi.org/ 10.11646/phytotaxa.547.3.3
DOI	https://doi.org/10.5281/zenodo.6580515
persistent identifier	https://treatment.plazi.org/id/5773DE60-FF93-FF84-FF7E-FB03FD97FEA8
treatment provided by	Plazi
scientific name	Callitriche muelleri Sonder (1856: 229
status

Treatment

13. Callitriche muelleri Sonder (1856: 229 View in CoL , nom. cons).

Type: — AUSTRALIA. VICTORIA. Latrobe River , May 1853, F. Müller s.n. (lectotype [designated by Bean 2007: 547]: MEL 2289178; isolectotypes: K000348666!, MEL 2289179A & 2289180) .

= C. macropteryx Hegelm. 1864 . Hegelm. 1864. Mon. Gatt. Call. 59, fig. IV. 2. Type: Neuholland ( Hawkesbury River , Ferd. Bauer; Herb. Vindob.) (W0008723).

= C. microphylla Colenso Trans. Proc. N. Z. Inst. View in CoL 20: 190 (1888), Type: Dannevirke, County of Waipawa , W. Colenso 1887 ( AK5076 annotated “type” and AK209397 annotated “separated from AK5076, 7 December 1992 ” WELT SP051450) “ SYNTYPES, *Dannevirke, Hawkes Bay, W Colenso no date, AK 5076, AK 209397 (formerly AK5076)” ( Herrick and Cameron 1994).

Description: —Stem and leaf scales present. Leaf bases connate. Lingulate leaves unknown, expanded, submerged or floating leaves unknown, leaves of terrestrial plants characteristically rhomboidal 2.5–7.5 mm long × 1.5–4.8 mm wide, blade broader than long and cuneate at base, apiculate, with a small single tooth on either side ( Fig. 11 View FIGURE 11 ), 3–5 veined with a free vein running to each tooth, petiole 0.3–0.8 mm long. ♂ and ♀ flowers usually together in each axil. Bracts lacking. Styles erect, caducous, <0.2 mm long. Filament arising from peduncle, erect, caducous, <0.3 mm long; anthers 0.1–0.2 mm long × 0.1–0.2 mm wide, trilocular; pollen yellow. Fruit shortly pedunculate, wider than high, reddish-brown when mature, 1.1–1.2 mm long × 1.2–1.4 mm wide, wing very broad throughout.

Distribution: —Native. Callitriche muelleri is widespread throughout much of North Island and the north-west of South Island in New Zealand, also reaching the Kermadec Islands (Raoul Island) and Rekohu (Chatham Island) ( Fig. 12 View FIGURE 12 ). It is also found throughout coastal parts of eastern Australia from Gympie south and west to the Great Otway National Park, Victoria, with disjunct occurrences in Queensland including the Atherton Tableland and Carnarvon Gorge ( Bean 2007: 548). There are also isolated records from New Caledonia.

Illustrations: — Figures 1 View FIGURE 1 (a–b) and 1A(a–c) in Mason 1959; Plates 1(A–M) and 4(1–4) in Schotsman (1985c). Fig. 10c View FIGURE 10 .

Recognition: — C. muelleri is the only species of Callitriche which has toothed leaves, which combined with the fruit which are very broadly-winged and reddish-brown or maroon when mature make it unmistakeable.

Habitats and Ecology: —Throughout its range, Callitriche muelleri typically grows on bare wet mud, loam or sand, often extending over adjacent stones, gravel or even leaf litter, as well as on thin soil over paving in habitats subject to seasonal inundation ( Jeanes 1999) and occasionally in shallow water ( Stanley and Ross 1986). It has been recorded growing with a wide range of species such as Blechnum nudum , Callitriche stagnalis , Carex appressa R.Br. (1820: 242) , Centella asiatica (von Linné) Urb. (1879: 287) , Cyperus brevifolius (Rottb.) Hassk. (1844: 24) , Isotoma fluviatilis (R. Br.) F. Muell. ex Benth. (1868: 136) , Juncus procera E.Mey. (1828: 367) , Leptospermum continentale Joy Thomps. (1989: 417) , Lobelia purpurascens R.Br. (1810: 563) , Melaleuca squarrosa Sm. (1802: 300) , Persicaria praetermissa (Hook. f.) H. Hara (1966: 73), Schoenoplectus mucronatus (von Linné) Palla, (1888: 299) and Typha orientalis C.Presl. (1851: 239) in Australia and with Carex dissita Sol. ex Hook. f. (1853: 284), C. solandri Hook. f. (1853: 284), C. virgata Sol. ex Hook. f. (1853: 282), Hydrocotyle novae-zelandiae DC. (1830: 67) and Uncinia uncinata Kük. (1909: 62) in New Zealand. It is most frequently recorded in a range of forest types including rainforest, wet sclerophyll forest or notophyll rainforest, as well as Melaleuca sp. woodland and humid scrub, while in New Zealand it has been recorded from Podocarpus dacrydioides A.Rich. (1832: 358) floodplain forest. 8–1128 m elevation.

Conservation Status: —This species is classed as Least Concern ( IUCN 2012) as it is widespread with stable populations and does not face any major threats. It is classed as Not Threatened, Secure Overseas in New Zealand ( de Lange et al. 2018).

Additional material studied:— AUSTRALIA: NEW SOUTH WALES. Blue Mountains, s.d., L Atkinson. s.n. (MEL 2247295, STU 15649); Blue Mountains, s.d, Woolls s.n. (MEL 2247298); 1843, Leichhardt s.n. (MEL 2247296); Port Jackson District, 1888, R. Fitzgerald s.n. (NSW 33808); Port Jackson District, November 1897, J.H. Campfield s.n. (NSW 33806); Thirroul, January 1917, A.H.S. Lucas s.n, (NSW 33811); Myall River, September 1924, H.M.R. Rupp, s.n. (NSW 77650); Upper Williams River, 13 January 1934, L. Fraser & J. Vickery s.n. (NSW 33805); Albion Park, 21 March 1946, E.G. McBarron 1576 (NSW 33810); W of Wauchope, 4 October 1951, A. Garden s.n. (NSW 17255); Whian State Forest, 12 April 1960, J.G. Tracey & W. Jones, 25755 (BRI AQ334983); Gloucester, 3 August 1964, B. Briggs s.n. (NSW 65391); Gloucester Fall, 18 April 1965, B.G. Briggs s.n. (NSW 75458); Ellenborough River, 400 m, 17 November 1965, E.F. Constable 6335 (NSW 79233); Kioloa State Forest, 11 October 1966, L.G. Adams 1589 (CANB 160042); Mt. Dromedary, 25 January 1970, N.T. Burbidge 7817 (CANB 236762, CANB 251531); Toonumber State Forest, 750 m, 2 September 1972, R. Coveney 4421 (NSW 373522); Wilson’s River headwaters, 18 May 1976, J. Thompson 2581 (NSW 373521); Mount Royal, 29 May 1990, E.J. Jefferson 14 (CANB 00402713); Whian State Forest, 25 September 1994, A.R. Bean 7930 (BRI AQ632689, NSW 673950); Chichester River, 31 March 1996, S.W.L. Jacobs 7966 (NSW 406095); Unumgar State Forest, 13 May 1998, A.R. Bean 13227 (BRI AQ670599, NSW 506888); SE of Tyalgum, 24 January 1999, A.R. Bean 14561 (BRI AQ676285, NSW 508664); Oakes State Forest, 30 January 1999, A.R. Bean 14596 (BRI AQ676401); 16 April 2000, A.R. Bean 16227 (BRI AQ679178); Bilambil, 11 August 2004, A.R. Bean 22748 (BRI AQ781495); Kingsgate Forest Preserve, 27 December 2005, A.R. Bean 24540 (BRI AQ734808); Gap Creek, Watagan Mts, 3 January 2006, I.R. Thompson 878 & W. Cherry (MEL 2299679); Murray Scrub Road, Richmond Range, 7 October 2006, S.P. Phillips 1616 & B.A. Phillips (BRI AQ699444); Doyles River State Forest, 706 m, 21 December 2007, A.R. Bean 27219 (BRI AQ786535); Raspberry Gully Reserve, Lake Macquarie LGA, 18 December 2011, S. Lewer s.n. (NSW 899658); Bungabee Nature Reserve, 29 December 2011, A.R. Bean 31433 (BRI AQ823479). QUEENSLAND. Archer’s Station, 28 August 1843, Leichhardt s.n. (NSW 33813); Brisbane River, July 1855, Mueller s.n. (MEL 2247293); Brisbane, 5 November 1887, J.H. Simmonds s.n. (BRI AQ27079); Brisbane, April 1888, J.H. Simmonds s.n. (BRI AQ27080); Burnett River, August 1889, J. Keys s.n. (MEL 2247292); Bulli, 9 March 1891, J.H. Maiden s.n. (NSW 673951); Atherton, August 1901, E. Betche 44 (NSW 33807); Sidling Creek, Petrie, December 1930, S.T. Blake s.n. (BRI AQ027083); Sidling Creek, July 1931, S.T. Blake 2515 (BRI AQ027078); Oxenford, 150 ft., 17 August 1930, C.E. Hubbard 3673 (GH); Sidling Creek, October 1931, S.T. Blake 2810 (BRI AQ027082); Coomera River, 26 August 1961, S.T. Blake 21592 (BRI AQ413221); White Water Creek, 20 April 1973, P. Sharpe 00345 (BRI AQ11668); Conondale Range State Forest, 22 October 1982, W.J. McDonald 3633 & J.B. Williams (BRI AQ439003); Maxwells Road Forest Reserve, 17 January 1984, A. Nunnink 542 (NSW 673952); Kiamba, 23 June 1990, P.R. Sharpe 4950 & A.R. Bean, (BRI AQ502504); Bli Bli, 18 February 1993, A.R. Bean 5779 (BRI AQ564770), 20 April 1993, D. Halford Q1674 (BRI AQ566136); Jimna, 580 m, 18 May 1993, A.R. Bean 6056 (BRI AQ567492); Corella Creek State Forest, 5 October 1993, A.R. Bean 6705 (BRI AQ621416); State Forest 185 Danbulla, 16 July 1994, P.I. Forster PIF15606, G. Sankowsky & M.C. Tucker (BRI AQ631918, MEL 241082), 1 April 1995, A.R. Bean 8524 (BRI AQ634914); Carnarvon NP, 19 March 2001, R.J. Fensham 4798 (BRI AQ557099); Mt. Mee State Forest, 3 March 2002, A.R. Bean 15843 (BRI AQ554718); Guanaba, 23 July 2002, D. Halford Q7076 & W. McDonald (BRI AQ559390); Gambubal State Forest, 23 November 2003, A.R. Bean 21193 (BRI AQ763510); Northbrook Parkway, D’Aguilar Range, 27 July 2005, S.P. Phillips 1325 & B.A. Phillips (BRI AQ766837); The Crater, 4 July 2007, B. Gray 9116 (BRI AQ738766, CANB 00723435); Mount Hypipamee National Park, Cook District, 22 August 2007, F.A. Zich 616 (BRI AQ849030, CANB 724576, NSW 920753, CNS 130790); Main Range National Park, 7 September 2008, S.P. Phillips 1856 & B.A. Phillips (BRI AQ743626); Mt. Glorious, 11 July 2009, S.P. Phillips 2034 (BRI AQ749243); Brisbane Valley Rail Trail, Blackbutt Creek, 10 July 2011, S.P. Phillips 2179 & B.A. Phillips (BRI AQ759196). VICTORIA. Snowy River, s.d., H.B. Williamson s.n. (MEL 2247304); Snowy River, s.d., F. Mueller s.n. (MEL 2247320); East Gippsland, s.d., Menall s.n. (MEL 2247313); Gellibrand River, s.d., H.B. Williamson s.n. (MEL 2247533); Gellibrand River, near Colac, s.d., H.B. Williamson 14103 (MEL 2247317); Near Mt. Ellery, 1886, [illegible] s.n. (MEL 2247534); East Gippsland, 1887, W.A. Sayer s.n. (MEL 2247316); Tidal River Camp, 7 December 1975, H.I. Aston 1891 (MEL 609857); Irrewillipe, April 1903, H.B. Williamson s.n. (MEL 2247521); Otway Ranges, April 1903, H.B. Williamson s.n. (MEL 2247314); Irrewillipe, April 1903, H.B. Williamson s.n. (MEL 2247319); Otway Range, April 1903, H.B. Williamson s.n. (MEL 2247310); Otway Forest, April 1903, H.B. Williamson (NSW 673953); tributary of Gellibrand River, 15 April 1903, H.B. Williamson s.n. (NSW 33812); Otway Ranges, 1904, H.B. Williamson s.n. (CANB 282975); Near Vereker Range, 19 October 1909, P.R.H. St John & J.W.C. Audas s.n. (MEL 2247311); Gippsland, Jan 1911, H.B. Williamson s.n. (MEL 2247318); Tonimbuk, 26 February 1936, H.B. Williamson s.n. (MEL 2247317); East Gippsland, ca. 1937, F. Robbins s.n. (MEL 2247308); Hotspur, December 1949, A.C. Beauglehole 497 (MEL 2247524); Chapple Creek, western Otways, 26 November 1961, J.H. Wills s.n. (MEL 2247522); Wilson’s Promontory, 21 November 1961, M.E. Phillips 613350 (CANB 15438); Mt. Drummer, 17 February 1965, J.H. Wills s.n. (MEL 2247523); Webenduck Creek, 25 January 1969, A.C. Beauglehole 31250 (MEL 2247315); Combienbar River, 8April 1969, N.A. Wakefield s.n. (MEL 1511765); Mallacoota, 3 November 1969, A.C. Beauglehole 31487 & Wills, J.H. (MEL 2247305); Mallacoota Inlet National Park, 16 November 1969, A.C. Beauglehole 31802 (MEL 2247531); Mallacoota Inlet National Park, 5 December 1969, A.C. Beauglehole 32446 & E.W. Finck (MEL 2247306); Alfred National Park, 17 December 1969, A.C. Beauglehole 32588 & Finck, E.W. (MEL 2247536); Mallacoota Inlet National Park, 29 December 1969, A.C. Beauglehole 32906 (MEL 2247303); East Gippsland, 10 October 1970, A.C. Beauglehole s.n. (MEL 2247530); Major Creek, East Gippsland, 16 November 1970, A.C. Beauglehole s.n. (MEL 2247301); Snowy River, East Gippsland, 3 December 1970, A.C. Beauglehole 35119 (MEL 2247307); Lake Victoria, East Gippsland, 3 April 1971, A.C. Beauglehole & F.C. Barton s.n. (MEL 2247532); Lake Tyers, 7 April 1971, A.C. Beauglehole s.n. (MEL 2247309); Toorloo Arm Reserve, 7 April 1971, A.C. Beauglehole s.n. (MEL 2247302); Western Port Bay, 16 May 1971, A.C. Beauglehole 38307 (MEL 2247528); Healesville, Coranderk Bushland Reserve, 1 March 1977, J.H. Wills s.n. (MEL 2247299); Coranderrk Bushland Reserve, 3 January 1980, J.H. Willis s.n. (MEL 574958); Cooaggalah Hill, 25 May 1980, S.J. Forbes 374 (MEL 595465); Gembrook Regional Park, 28 November 1982, A.C. Beauglehole 72012 (MEL 626739), Mullungdung Flora and Fauna Reserve, 28 October 1983, A.C. Beauglehole 74905 (MEL 654201); Mullungdung Flora and Fauna Reserve, 8 December 1983, A.C. Beauglehole 75784 (MEL 1602794); Jones Creek Reference area, 200 m, 27 January 1984, E.A. Chesterfield 68 (MEL 1545471); Heyfield State Forest, 17 October 1984, A.C. Beauglehole 78390 (MEL 673050); Wallagaraugh River, 21 October 1991, N.G Walsh 3138 (MEL 2013384); “Malinns” on Bonang Hwy, N.G. Walsh 6871, 14 April 2009, J. Walsh & E.J. Renowden s.n. (MEL 2323838); Bunyip State Park, 30 December 2009, J.A. Jeanes 2275, N.G. Walsh & J. Reid (K, MEL 2325836). NEW CALEDONIA: Pouebo, 27 December 1962, M. Mackee 9858 (K, P 03985991, NSW 935602); Toili, 25 August 1965, H.S. Mackee 196 I3347 (P 03985989, P 03985990); Col d’Amieu, Toili, 400 m, 25 August 1965, H.S. Mackee I3347 (P 03985989, P 03985990), Crete au N Isl Hle, Pouebo 500 m, 27 December 1962, H.S. Mackee 9858 (K, NSW 935602, P! 03985991); NEW ZEALAND: 1967, von F. Müller s.n. (STU 15651); 26 December 1961, L.B. Moore s.n. (CHR 125545). CHATHAM ISLAND. Kaitirira, Chatham Island, 1863 and 1898, T. Kirk s.n., (STU 12805). KERMADEC ISLAND. Raoul Island, 24 November 1966, W.R. Sykes 282 (CHR 175965). NORTH ISLAND. Auckland, s.d., J.K. 15 (MEL 2404666); Auckland, North Island, s.d., T. Kirk 3 ( US); Auckland, s.d., T. Kirk s.n. (STU 15650); Bay of Islands, s.d, s.coll. s.n. (GH); Great Barrier Island, s.d, s.coll. s.n. (NSW 935589); Beside Waiotahi River, south of Scenic Reserve, Waiotahi Valley, Opotiki District, 200 ft., s.d., M. Heginbotham s.n. (CHR 368176); Auckland Peninsula, s.d., D. Petrie 1481 (NY); Bay of Islands, October 1874, S. Berggren s.n. (G); Auckland, 12 April 1949, E.H. Walker 5428 ( US); Waipoua Forest, North Auckland, 24 November 1949, R. Mason and N.T. Moar 125 (MEL 2404665); South Auckland, 3 February 1950, N.T. Moar 559 (CHR 69978); Warkworth, 19 March 1951, L.B. Moore s.n. (CHR 70353); Bay of Plenty, 11 December 1959, R. Mason 7710 (CANB 00589574); Tiritiri Island, 20 December 1970, A.E. Esler 3233 (CHR 362517); Russell State Forest, 29 November 1972, A.E. Orchard 3712 (AD 97315205); Hawke’s Bay, June 1976, A.P. Druce s.n. (CHR 283003); Manawatu River, October 1976, A.P. Druce s.n. (CHR 313040); Mauturu, 6 February 1981, R.O. Gardner 2894 (CHR 446052); Levin, Koputaroa, 1 April 1986, C.C. Ogle 1391 (CHR 421263); Lake Rotoiti, Wanganui, 1 February 1992, C.C. Ogle 2219 (CHR 477055); Wanganui, Lake Wiritoa, 31 January 1999, C.C. Ogle 3460 (CHR 518739); Wellington, 26 May 1959, A.P. Druce s.n. (CHR 111093); Wellington, 26 May 1959, A.P. Druce s.n. (CHR 111093). SOUTH ISLAND. South Westland, Big Bay, Haast, 1 October 1945, P.N. Johnson 204 (CHR 415741); Westport Domain, 25 January 1953, R. Mason & N.T. Moar 1721 (NSW 935588); Westport, 24 January 1953, R. Mason & N.T. Moar 1709 (MEL 2401984); Lower Kokatahi Valley, 13 February 1958, R. Mason & N.T. Moar 5179 (AD 99025090, CHR 97629); Okarito Lagoon, 24 February 1958, R. Mason & N.T. Moar 5563 (CHR 107249).