Triglochin. | NAIADACEX. 747 
each carpel, basilar, erect, anatropous. Fruit of 3 or 6 free or 
connate coriaceous nutlets separating from a central axis. Seeds 
erect, cylindric or ovoid, terete or compressed ; testa membranous ; 
embryo straight. 
About 12 species are known, spread through most temperate or subtropical 
regions, but especially plentiful in Australia. Both the New Zealand species 
are widely distributed. 
Triglochin is often regarded as forming (with 3 other small genera) a 
distinct order (Juncaginacee), but for the purposes of this work it appears most 
convenient to merge it with the Naiadacee. 
Scape 3-10in. high. Fruit subglobose .. ta a. Let. striatum. 
Scape 6-24in. high. Fruit clavate .. Be .. 2. T. palustre. 
1. T. striatum, Rwiz and Pav. Fl. Per. iii. 72; var. filifolium, 
Buch. Index Crvt. (1868) 59.— Rhizome short, stoloniferous. 
Leaves numerous, very narrow-linear or almost filiform, semi- 
terete, variable in length, shorter or rather longer than the scape. 
Scape 3-10in. high; raceme usually occupying about one-half the 
length. Flowers numerous, shortly pedicelled, minute, about 
fzin. diam. Outer perianth-segments broadly ovate; inner 
smaller and narrower. Perfect stamens 3, at the base of the outer 
segments; three inner abortive, without pollen, sometimes alto- 
gether wanting. Fruit globose, j,in. diam., of 3 perfect carpels 
separating from a central axis and leaving 3 scale-like barren 
ones attached to it.—Buchenaw in Pflanzenreich, Heft iv. 14. T. 
striatum, Benth. Fl. Austral. vii. 166. T. triandrum, Michx. Fl. 
Bor. Am. i. 208; Hook. f. Fl. Nov. Zel. i. 2386; Handb. N.Z. Fi. 
278. TT. flaccidum, A. Cunn. Precur. n. 321; Raoul, Choix, 41. 
T. filifolium, Sieb. ex Spreng. Syst. iv. 142; Hook. Ic. Plant. 579. 
NorTH AND SoutH IsLANDS, StEwaRT IsLAND, CHATHAM IsLANDS: Abund- 
ant throughout in marshes near the sea; also inland in various localities in the 
thermal-springs district from Te Aroha and Rotorua to Taupo and Tokaanu. 
October—January. 
The New Zealand variety is also found in Australia, Tasmania, and Chili; 
the typical state ranges throughout almost the whole of North and South 
America, and also occurs in South Africa. 
2. T. palustre, Linn. Sp. Plant. 338.—Rhizome short, stolonifer- 
ous. Leaves all radical, much shorter than the scape, narrow- 
linear or filiform, semiterete, upper surface faintly grooved. Scape 
slender, 6-24 in. high; raceme elongating after flowering. Flowers 
numerous, shortly pedicelled, minute, green or greenish-purple. 
Perianth-segments ovate, all equal. Stamens 6, all fertile ; anthers 
purple. Fruit appressed to the rhachis, linear-clavate, in. long; 
carpels 3, very slender, almost awned at the base, attached to the 
axis by the tip.—Cheesem. in Trans. N.Z. Inst. xiv. (1882) 300. 
