450 CLXVIL HYDROCHARIDEZE. 
13. TuarassrA.—Spathre 2-phylle, basi breviter tubulose, utriusque sexus l-flome. Peri- 
anthium simplex. Stamina 6.  Ovariura longe rostratum. Fructus demum in lobos coo 
dehiscens. Folia longa, basi per 2-3 vagina membranaceo-seariosa stipata.—4nd. Occid., 
Mare- Rubrum et. Indicum. 
14. HaroPHirA. Spaths 2-phylle, utriusque sexus 1-florw. Perianthium simplex. Sta- 
mina 3. Ovarium longe rostratum, Styli 3. Fructus globosus. Folia ad nodos e squama 
membranaceo-scariosa gemina, petiolata, pennivenia.—Mare Indicum ab Africà usque ad 
Austral. e£ Mare Pacif, 
Taurus I. HyDRILLEZX. 
1. mydriHa, L. C. Rich. in Mem. Inst. Par. 1811, 9, 61, t. 2. (Epigynanthus, Blume 
in, Flora, 1825, 079, et in. Hassk. Cat. Hort, Bog. 53, nomen tantum. Hydrospondylus, 
Hassk. in Anu E ii. exin 33). —Spathie unisexuales, i-florze, ad axillas foliorum. 
sessiles, d g iw, sub anthesi irregulariter ruptis. Flos 
breviter pedicellat Perianthi . duplex, 3-merum ; segmenta exteriora ovata v. 
obovata, interiora angustiora.nec longiora. Stamina 3, filamentis crassiusculis ; antherce 
ovats.  Pistilli rudimentum 0. Spathie 9 tubulosem, qe 2-dentato. Flos gessllis, 
Perianthium supra ovarii rostrum mari similis nisi seg gustioribus. 
0... Ovarium spatha inclusum, ultra spatham in rostrum longissi filiforme product 
1-loculare, placentis 3, rarius 2, parum prominulis ; styli stig i 3, rarius 32, lineares, 
crassiuseuli, indivisi ; ovula haud numerosa, (ex Caspary) anatropa. Fructus angustus, 
e spatha fissa subexsertus. Semina (ex L. C. Richard) oblonga, testa adnata utrinque 
minute producta.—Caules submersi, elongati, ramosi, undique foliosi. Folia 3-4- natim 
verticillata v. inferiora opposita, brevia. Spaths» d' parve, 9 tenues. 
Species 1, per aquas dulces Asiz tropicze et Australie latissime dispersa. Casp. in. Prings. Jahrb. 
1.493. Hoxb. Corom. Pl. t. 164 (Serpicula). 
Stylus ex Hasskarl intra tubum perianthii (ovarii rostrum) liberum, quod in speciminibus ipsis 
Javanigis confirmare nequimus, Ovarii rostrum filiforme intus faretum vidimus quale a L. C. Rieh, 
1. c. t. 2 F. G. delineatur. 
2. z1odea, Mich. Fl. Bor. Amer. i. 20 (Udora, Nutt. Gen. N. Amer. Pl. ii. 242. 
Apalanthe et Egeria, Planch. in Ann. Sc. Nat. ser. 3, xi. T5, 79. Anacharis ef Apalanthe, 
Bab. et: Planch. in. Trass. Bot. Soc. Edinb. iii. 27, t. 2, et in Ann. Nat. Hist. ser. 2, i. 81, 
1. 8).—Spath: unisexuales v. polyg. ovato m tubul apice 2- lobee, demum sspe 
varie rumpentes, focemines 1- -flore, polyg: 3-flore.  Periantl d ad apicem 
peduneuli longi, 9. v. ( in ovarii rostro, Dari 3-merum ; segmenta utriusque seriei 
petaloidea, interiora swpius exterioribus latiora. Stamina 3, 6 v. 9, in flore 9 ad stami- 
nodia 3 reducta v. 0; antherz oblong:, erect. Ovarium in floribus 9 et & intra 
spatham inclusum, oblongo-li 1-loculare, placentis 3 parietalibus parum prominulis, 
in rostrum longissimum filiforme forolum: productum ; stylus brevissimus, ramis stigma- 
iosis 3 linearibus apice 2-lobis v. profunde 2-lobis ; ovula in placentis .Bumeross; (ex 
Caspary) orthotropa. Fructus oblongus, spatha Ebblosth v..8 latere exsertus. Semina oo, 
oblonga, filamentis pulposis induta ; embryo conformis, plumula parva inclusa.— Caules 
submersi, elongati, ramosi, usidilido "foliosi. Folia brevia, 3-4-natim deco v. 
inferiora'opposita. Spathze ad axillas foliorum sessiles, parv:e v. tenues. 
Species ad 8 in aquis duleibus Ameriez temperate v. tropiez late disperse, una etiam in variis 
locis Europe obvia, ut. videtur inquilina, etsi hodie copiosa. L. C. Rich, in Mem. Inst. Par. 1811, 
4, 60, 7. 1, Caspary in Prings. Jahrb. i. 497. —. Reichb, Ic, Fl. Germ. t. 59 (Udora). 
Axacnanis, L. C. Rich. in Mem. Inst, Par. 1811, 7, 61, t. 2, est. E. callitrichoides, Casp. (Egeria 
chilensis et Egeria Matthewsi, Planch. ) dieu ghe australis extratropicze; antheris ratione fila- 
menti maximis post pollinis emi ) pansis insignis, 
3. Lagarosiphon, Har. in, Hook. Journ. Bot. iv. 230, t. 22, —Spathre unisexuales, com- 
presse, ad axillas foliorum sessiles ; d' ovatz, apice 2-fidze, floribus oo seepe numerosis 
