Wilson and Johnson, Juncus (Juncaceae) in Malesia 
385 
Tufted perennial. Culms more or less flattened, yellow-green, 10-40 cm long, 1.3-3.0 mm 
diam. Leaves pluritubulose, spread along culms, shorter or equalling culms, 
compressed, 1.3-3.2 mm wide; auricles 0.3-1.0 mm long. Inflorescence terminal, 5-17 cm 
long, diffuse, with flowers clustered, 5-25 per cluster and 4-40 clusters per 
inflorescence; 1 well-developed involucral bract, 3-14 cm long, shorter than or rarely 
as long as inflorescence. Tepals acuminate, often spreading to recurved at maturity, 
straw-brown to red-brown, with narrow hyaline margins; outer tepals 2.5-3.5(-4.1) 
mm long, more or less equalling inner tepals. Stamens 3, shorter than outer tepals; 
anthers 0.4-0.7 mm long, shorter than filaments. Capsule exceeding outer tepals by 
1-3 mm (to twice as long), very narrow-ovoid, golden brown, long-acuminate, 
tapering evenly then narrowing abruptly at apex into slender beak c. 0.3 mm long. 
Seeds 0.4-0.5 mm long. 
Illustrations: Fig. le-g; also Buchenau (1906: fig. 89) as var. genuinus ; Wilson et al. 
(1993: 289). 
Anatomy illustrated: Buchenau (1906: fig. 89C); Cutler (1969: fig. 7J, K). 
Distribution and habitat: In Australia, found in temperate regions of Queensland, 
New South Wales, Victoria, Tasmania and South Australia. There is one old specimen 
purportedly from Western Australia - Murchison River, Oldfield - but that is regarded 
as a doubtful record. In New Zealand, this is widespread on the North Island, 
scattered on the South Island, in swampy situations. Introduced in Hawaii. 
Widespread in wet sites: margins of dams, swamps, marshes and creeks. 
Notes: Confused with J. leschenaultii and /. wallichianus in Malesia and Asia (see, e.g.. 
Backer 1951). It differs from both species in its very long, acuminate capsule, which is 
up to about twice as long as the tepals. For other differences, see the comments above 
under the treatments of those two taxa and the key. 
Selected collections examined: AUSTRALIA: Queensland: Windsor Tableland, N of Mt Carbine, 
A. Bean 4562, 7 June 1992 (BRI, NSW); Rainbow Creek, Blackdown Tableland, L. Johnson and 
D. Blaxell 741, 26 Nov 1972 (NSW); near Beenleigh, c. 1 mile [1.6 km] along Waterford Road, L. Smith 
12236, 4 Nov 1964 ( BRI, NSW). 
New South Wales: Bell Bird Creek, 4 miles (6.5 km) N of Eden, R. Melville 2742 and N. Wakefield, 
8 Jan 1953 (K, NSW); Busbys Flat Road 27 km SW of Casino, in Royal Camp State Forest, K. Wilson 
8553,22 Oct 1992 (BRI, K, NE, NSW); Etoo Creek 7 km along Kellys Lane from Pilliga - Gwabegar 
Road, K. Wilson 6042, 15 Nov 1984 (CHR, NSW); NW side of Castlereagh State Forest, SE of 
Londonderry, K. Wilson 7997, L. Johnson and P. Bankoff, 5 Feb 1992 (CHR, NSW). 
Victoria: Woori Yallock Picnic Ground, c. 0.5 km NW of Yellingbo, A. Beauglehole 50411,22 Mar 1976 
(MEL, NSW); Reedy Creek, 5 km by road E of Cann River, L. Johnson 7438 and E. Edgar, 21 Oct 1971 
(NSW); 4 Mile Creek, near Warburton, R. Melville 3832, 3 May 1953 (K, NSW); c. 4 km from Genoa 
on Mallacoota road, K. Wilson 2214, 8 Feb 1979 (MEL, NSW). 
Tasmania: S. Esk River at Perth, W. Curtis s.n. and Cameron, 7 Feb 1979 (HO, NSW 241536). 
South Australia: Myponga, J.M. Black, Mar 1923 (AD). 
NEW ZEALAND: North Island: Scott Point, North Cape, Kelly, Apr 1967 (CHR 178242); Bethells 
Swamp, Waitakere Range, R. Gardner 888, 10 May 1974 (AKU, NSW); Rotokare, near New 
Plymouth, A. Druce CHR 158503, Feb 1964 (CHR); Palmerston North waterworks, Zotov, Dec 1932 
(CHR 4547). 
South Island: Pakihi E of Collingwood-Rockville road, R. Mason and N. Moar, Feb 1957 (CHR 
95785); near Lake Rotoiti, R. Mason and N. Moar, Feb 1957 (CHR 95995); Marsden, Healy 61/73, Mar 
1961 (CHR); near lower Wairau River, R. Mason 3098, Jan 1955 (CHR). 
^HAWAII: Kohala Mountains, Kahua Ranch, 3300 ft [1000 m], P. Rubtzoff, 2 Aug 1956 (NY ex CAS). 
