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11 Leaf sheath margins broad, yellow, chartaceous; tepals (2.3-)2.5-3.7 mm long, all of 
similar length; capsule acute to broad-acute with beak 0.2-0.5 mm long, exceeding 
(occasionally greatly so) to equalling tepals . 2. J. wallichianus 
11* Leaf sheath margins more or less narrow, yellow, chartaceous; tepals 2.4-3 mm 
long, outer tepals shorter (occasionally much shorter) than to equalling inner 
tepals; capsule long-acuminate with beak 0.5-0.7 mm long, much exceeding tepals 
. 14. J. leptospermus 
A description of the Australasian pluritubulose-leaved J. prismatocarpus is provided 
here since there has been so much confusion over its limits. This is followed by a brief 
enumeration of the Asian septate-leaved species mentioned in the synoptic key above. 
The three species that occur in Malesia are treated above. 
In a recent paper on Chinese species of Juticus, Wu (1994) recognised two new species 
in 'Subgen. Septati sect. Articulali ser. Articulati' — J. sphaerocephalus K.F. Wu and 
J. auritus K.F. Wu — of which we have seen no material. From the descriptions and 
illustrations, these probably both fall within the variation of /. umllichianus as 
recognised by us. He described a new subspecies, J. prismatocarpus subsp. teretifolius 
K. F. Wu, of which we have seen a duplicate of the type number (Tsang 20636) in K; that 
specimen belongs to J. wallichianus. 
We have not seen type material of /. bombonzanensis Satake (from Taiwan; type in TI?). 
This name was given as a synonym of /. ivallichianus by Kao and De Vol (1978), but that 
seems unlikely since Satake (1933: 182) described it as having imperfectly septate 
(= pluritubulose) leaves. This suggests that it is referable to /. leschenaultii, as does the 
elongated capsule illustrated by Satake (1933: fig. 18), and the habit (1933: pi. 1) is 
reminiscent of /. leschenaultii. 
9. Juncus prismatocarpus R. Br. 
(Brown 1810: 259) 
J. prismatocarpus var. a genuinus Buchenau (Buchenau 1885: 204), nom. inval. 
Type: Australia: New South Wales: Port Jackson, R. Broivn (Bennett 5784); holo BM, 
photo NSW. 
Juncus commutatus Steud. (Steudel 1855: 301). Type citation: 'Juncus prismatocarpus 
Sieb. nr. 431 Hrb. n. H. [Nov. Holl.] et 630 hrb. mixt. et R. S. Syst. VII 213.' Type: New 
South Wales: Sieber Herb. Nov. Holl. 431; lecto (here designated) P (herb. Steudel); 
isolectos BM, BREM (n.v.), K, L (sheet 904.144-370), MEL. Residual syntype: Sieber 
Herb. Mixt. 630; syn L, P (herb. Steudel). 
The sheet of Sieber 431 that is in Steudel's herbarium bears elongated but not quite 
mature capsules. Steudel had named this sheet as J. prismatocarpus. Despite being in 
not particularly good condition, it is more suitable as a lectotype than Sieber Herb. 
Mixt. 630 since it is much more mature than the latter and therefore more recognisable. 
This choice is supported by Steudel’s description of capsules for this taxon (the other 
specimen is too immature to have capsules). Sheets of 431 seen in other herbaria are 
generally in better condition. In L, there is one sheet of 431 (sheet 904.144-373) that 
bears an immature specimen of a unitubulose species (perhaps the Australian J.fockei 
Buchenau or J. holosclioenus R. Br.) that obviously does not belong to /. prismatocarpus. 
The plants on the sheets of Sieber Herb. Mixt. 630 in P and L are pluritubulose but very 
immature; that number has not been seen elsewhere. Steudel had named the sheet in 
P as /. commutatus. 
