00289nas a2200085 4500008004100000245004700041210004700088100001800135856005000153 1810 eng d00aOriginal publication of Triglochin procera0 aOriginal publication of Triglochin procera1 aBrown, Robert uhttps://juncaginaceae.myspecies.info/node/50902128nas a2200229 4500008004100000245007800041210006900119300001200188490000700200520143400207653001401641653002201655653001501677653003001692653002401722653001501746653003101761653001301792100001901805700002401824856005001848 1981 eng d00aMorphological forms and polyploidy in Triglochin procera agg. in Victoria0 aMorphological forms and polyploidy in Triglochin procera agg in  a639-6510 v293 a

A numerical analysis of intraspecific variation within the Triglochin procera aggregate in Victoria suggests four morphologically distinct forms. Cytological studies indicate the polyploid series 2n = 16, 32, 64, the counts corresponding to three of the morphological forms. The diploid. designated form A. is found in north-central Victoria. It has distinctively small fruits, with 4-6 carpels. The pericarp is membranous, and the seed testa brown, hard and three-ridged. Flowering scapes are reddish. in comparison with the green scapes of the other forms.

The tetraploid, designated form B, found in Gippsland, has globose, smooth, untwisted fruits on very short pedicels and terete leaves and scapes. In common with form C, it has a constant carpel number of 6, fruit with a fleshy pericarp, and seed with a smooth, pale, soft testa.

The octoploid; form C, is the most widely distributed and the most variable form, particularly with regard to leaf morphology and degree of twisting of the carpels. Leaves are generally fleshy and broad, but may be thinner and trailing in fast-flowing water. Fruits are large.

The fourth morphological form; D, is also an octoploid, with fruits like form C, but it has thin trailing. submerged, conspicuously veined leaves which contrast with the robust. emergent leaves of the other forms. It is found in the fast-flowing streams of east Gippsland.

10aAustralia10aChromosome counts10aCycnogeton10amorphological variablilty10apolymorphic species10apolyploidy10aTriglochin procera complex10aVictoria1 aRobb, Lorraine1 aLadiges, Pauline, Y uhttps://juncaginaceae.myspecies.info/node/302