Juncagiiew.] CXCV. NAIADACEJE. 1013 
9. "Fetroneium, JVilld. ij» Gen. Nat. Fr. Berl. Mag. ii. 17. (Cathanthes, L. C. Rich. 
in Mém. Mus. Par. i. 365.)—Flores dioici, deflexi. ——Perianthii obliqui colorati segmenta 
4, inzequalia, late ovata, in fl. 9 angustiora, concava, colorata, 2 superiora altius inserta 
supremo majore. Stamina 4 (in fl. 9 0), basi perianthii inserta ; anthere subsessiles, 
basi affixee, late didymse, extrorsum dehiscentes. Ovarii carpella 4, in fl. d 0, loculis ima 
basi confluentibus, subulata, supra medium distincta, in stylos subulat sensim att t 
1-locularia, stigmatibus punctiformibus; ovula in loculis solitaria, basilaria, erecta, anatropa. 
Fructus elongatus, deflexus, subulatus, apice 4 tus, imp 4-locularis, ssep 
i-spermus, Semen erectum, subcylind lavatum, obtuse trig testa tenuissima ; 
embryo rectus, teretiuscul itate radiculari attenuata.— Herba parvula, junciformis, 
glaberrima, rhizomate repente in caulem erectum foliosum flexuosum producto. Folia 
disticha, equitantia, anguste iformia, rigida, acuta, vaginis membranaceis. Flores 
pauci, spicati, ebracteati, perianthii segmentis rufo-fi latis, ebracteati 
Species 1, Fuegis et insularum Maelovianarum ineola. Micheli in DC. Monogr. Phanerog. iii. 
110 (Catanthes). | Buchen. in Engl. Bot. Jahrb, ii. 494. Hook, Ic. Pl. t. 534. — Hook. f. Fl, Antarct. 
ii, £, 128. " 
4. milea, Humb. et Bonpl. Pl, ZEquim. i. 291, t. 63. (Heterostylus, Hook. Fl. Bor. 
Am. ii. 171, t. 185.)—Flores monoici, perianthio 0. Fl. d in spicis unisexualibus v. 
androgynis dispositi, bracteati. Stamen 1, minutum, bractes basi insertum ; anthera 
sessilis, didyma, loculis b isa latere dehiscentil iivo apice l d 
obtuso hyalino, polline globoso. Fl. 9: alii minuti, in spicis pedunculatis dispositi, alii 
majores, ad basin foliorum solitarii, sessiles. Ovarium sessile, lanceolatum, compressum, 
l-loeulare ; stylus in floribus spicatis 0, stigmate disciformi, in solitariis longissimus, 
filiformis, stigmate capitato ; ovulum solitarium, basilare, erectum, anatropum. Fructus 
oblongo-lanceolatus, compressus, cori costatus, indehi in fl. spicatis anguste 
alatus, in solitariis incurvus, 3-gonus, exalatus, apice uno latere dentatus. Semen peri- 
carpio conforme, erectum, testa membranacea; embryo elongatus, rectus, angustus, 
"m itate radiculari infera, cotyledonari paullo att ta. — Herba ceespitosa, glaberri 
aquatica v. paludosa, flaccida, rhizomate brevissimo, radicibus fibrosis. Folia lineari- 
ligulata, sub b integerrima ; obtusiuscul i vagi nervis paralleli 
Spies ovoidez, longe peduneulatz ; bractes caduez. Flores 9 radicales quam spicati 
multo majores, stylo interdum 3-pollicari. 
a 
Speeies 1 v. 2, Amerieze tropicze et subtropicze australis et boreali-occidentalis incole, Micheli in 
DC. Monogr. Phanerog. ii, 111. — Lao. Illustr. t.998. S. Wats, Bot, Calif. ii. 193. Sehnizl, Iconogr. 
i.& 49. An braetea pro perianthii segmentum habenda ? 
Tarsus Il. APONOGETONEJX. 
5. Aponogeton, Thunb. Diss. i. 73, t. 4. (Spathium, Edgew. in Journ, As. Soc, Beng. 
1842, 145, cum ic. ; et. in. Cale. Journ. Nat. Hist. iii, 539, t. 15, 16, non. Lour.)—Flores 
hermaphroditi, rarius abortu unisexuales, spicati. Perianthii segmenta (v. braetese) 2-3, 
rarius 1 v. 0, petaloidea, zequalia v. inzeqnalia, ovata obovata v. oblonga, basi lata inserta, 
persistentia v. tarde decidua. Stamina 6-0, hypogyna, filamentis inzequilongis subulatis 
y. filiformib iuseulis persistentibus ; anthere parvze, didym: ; pollen subglobosum v. 
ellipsoideum. . Ovarii carpella 3-6, distincta, oblique ovoidea, sessilia, in stylum brevem v. 
subelongatum (rarius 0) attenuata, stigmate oblique disciformi v. breviter decurrente ; 
ovula 2-oo, basilaria, sutura ventrali 2-seriatim inserta, erecta v. adscendentia, anatropa. 
Carpella matura 3 v. plura, oblonga lageniformia v. ibglobosa, obtusa v. stylo apiculata, 
ventre dehiscentia, 2-o0-sperma. Semina erecta, obl. lata v.'cylind. testa 
carnosa v. membranacea; embryo rectus, nunc oblongus plumula polyphylla in sinu ventrali 
infra medium inserta, nunc cylind et homog plumula germinati tardius 
evoluta.—Herb:e sub pi. hi ite tuberoso interd tolonifero, radicil 
fibrosis, Folia longe petiolata, oblonga v. linearia, erecta v. natantia. Spies solitariw v. 
