1012 CXOV. NAIADACEJE, 
GENERA EXCLUSA, 
ErravwawTHUS, Blume (que Zydrilla, L. C. Rich.), et TrrarAssA, Soland, supra sub Hydro- 
charideis memorantur. Lxwworsi, Zipp. in Flora, 1829, 285 (nomen). Zoll. Syst. Verz. Df. 
Zolling. 14, est Halophila, Thou., pariter ad Ky pertinens, y supra p. 455, 
preetermissum, 
Tarpus LI. JUNCAGINEX. 
1. "Triglochin, Liwi. Gen. n, 453.—Flores hermaphroditi, rarius polygami. Perianthii 
segmenta 3 v. 6, rarius pauciora, herbacea, concava, decidua, 3 interiora altius inserta. 
Stamina 6, basi segmentorum inserta v. 3 interioribus rarissime obsoletis ; antherse sessiles, 
in media facie affixce, extus dehiscentes. Ovarii carpella 6, distincta v. plus minus connata, 
l-locularia, omnia fertilia v. 3 alterna imperfecta v. ad laminas tenues redueta; styli 
breves v. sub 0, liberi v. connati, stigmatibus plumosis v. papillosis ; ovula. in carpellis 
solitaria, basilaria, erecta, anatropa. . Fructus subcylindracei obovoidei v. columnaris 
carpella. distincta "m connaía, ; angulata costata v. teretia, apicibus rectis v. recurvis, basibus 
v. 2. iia v. ventre dehiscentia, perfecta smpius ab axi 
persistente a basi solvenda, imperfecta dum adsint persistentia, pericarpio sieco v.succulento. 
Semina erecta, cylindracea v. wire Boma teretin M compressa, testa tenuiter mem- 
branacea; embryo semini conf. recta, plumula prope basin 
extremitatis radicularis inserta. —Horbe Perovtits , Scapigerve, rhizomate tuberoso v. sub 0, 
in paucis stolonif. Folia elongata, plana v. teretiuscula, 
interdum natantia. Flores parvi v. majuseuli, spieati v. pedicellis brevibus racemosi, 
erecti, ebracteati et ebracteolati. 
Species ad 12, in paludibus aquze dulcis et salsz regionum. temperatarum et, frigidarum. utriusque 
hemisphrre vigentes. Micheli in DC. Monogr. Phanerog. iii. 96. — Buchen. in Engl. Bot. Jarhb, ii. 
$06. Benth. Fl. Austral. vii, 165. — Geertn. Fruct.ii. t, 81. INees, Gen. Fl. Geri. Monocot, ii, n. 
28. Mirb. in Ann. Mus. Par. xvi. t. 16. L. C. Rich. in Ann. Mus. Par. xvii, t. 6. — Schnizl. Icon. i. 
1.49.  Schkuhr, Handb. t. 102.  Reichb, Ie, Fl. Geri. vii. £. 01, 010, 02, Griff. Ic. Pl. Asiat. t. 271. 
Engl. in. Mart, Fl. Bras. iii. i. t. 19. Jacq. Ie. Rar. t, 464. Hook, Ic. Pl, t. 410, 579; 728, 731. 
-Bot. Mag. t. 1446. Genus in sectiones 3 divisum :— 
l. Eutriglochin. | Carpella perfecta 3, decidua, imperfecta in axi persistentia. Stamina sepissime 
3, v. in flore supremo 6. 
2. Cyenogeton. Carpella distincta, perfecta 3-6, imperfecta 0. Stamina svpissime 6. Cvcxo- 
aErox, Endl. in Ann. Wien. Mus. ii, 210; Zconogr, t. 73. 
3. Maundia.  Carpella 3-4, post anthesin coalita. MavwDia, E Muell. Fragm. Pljtogr. 
Austral, i, 23. 
2. Scheuchzeria, Linn. Gen. 5. 459, —Flores hermaphroditi. Perianthii segmenta 6, 
oblonga, pus coriacea, subcolorata, persistentia, 3 interiora angustiora. Stamina 6, 
basi ii inserta, fil: flaccidis; anthers basifixz, lineares, apieulate, extus 
dehiscentes, exserts. Ovarii carpella 3-6, inferne ventre connata, compressa, 1-locu- 
laria; stigmata sessilia, obliqua, papillosa, extrorsum spectantia ; ovula in loculis 2 v. 
pauca, basilaria, erecta, anatropa. Carpella matura ssepius 3, divaricata, suborbicularia, 
inflata, coriacea, ventre dehiscentia, 1-2-sperma. Semina ellipsoidea v. obovoidea, 
erecta, tesa coriacea crassa, membrana interna tenui; embryo semini conformis, 
dieulari infera, cotyledonari rotundata, plumula minuta infra medium 
sita. Herba junciformis, PLE rhizomate repente in caulem erectum foliorum 
flexuosum producto. . Folia semiteretia, apice pervia, basi longe vaginantia. Flores pauci, 
laxe racemosi, pedicellis basi bracteatis, bracteis basi vaginantibus. " 
Species 1, paludibus turfosis Europe, Asize et Amerieze borealis obvia. —MicAeli in. DC. Monogr. 
Phanerog, iii. 96. — Buchen. in Engl. Bot. Jahrb. ii. 503. — Nees, Gen. Fl. Germ. Monocot, ii, n..24, 
Heichb, Ie, Fl. Germ. x. t. 419. Schkuhr, Handb, t. 100, 
