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ÉLATINACÉES. 221<br />

GENERA<br />

4. Elatine L. — Flores hermaphroditi regulares, 3, 4-meri;<br />

receptacuio convexiusculo. Sepala 2-4, libéra v. basi eonnata, imbricata<br />

v. subvalvata. Petala totidem alterna, hypogyna, imbricata.<br />

Stamina 4-8, duplici série sepalis petalisque opposita ; filamentis<br />

liberis; antheris introrsis, versatilibus, 2-locularibus; rimis 2, nunc<br />

obliquis et apice confluentibus. Germen liberum; loculis 2-4, oppositisepalis;<br />

styli brevis lobis v. ramis 2-4. Ovula oo, loculorum angulo<br />

internb inserta anatropa. Fructus capsularis septicidus; septis '1-4<br />

post dehiscentiam axi adnatis v. evanidis. Semina oo, recta v.<br />

arcuata, saepius rugosa, areolata v. costata; embryone carnoso recto<br />

v. leviter arcuato ; albumine 0 v. tenui. — Herba; aquatiese v. repentes<br />

glabrae, humiles; foliis oppositis v. verticillatis ; stipulis 2; floribus<br />

axillaribus solitariis v. rarius eymosis paucis. (Orbis ulriusque reg.<br />

temp. et sabtrop.) — Vid. p. 248.<br />

2. Bergia L. — Flores (fere Elatines) plerumque 5-nieri, rarius<br />

3-4-meri; sepalis dorso costatis, imbricatis. Petala alterna hypogyna,<br />

imbricata v. torla. Stamina saepius 40, 2-seriata, oppositipetala<br />

breviora; filamentis liberis; antheris introrsis. Germinis loculi<br />

(superne nunc incompleti) stylique totidem alternipetali ; ovulis oo.<br />

Capsula septicida v. septifraga ; valvis placentam nudantibus.<br />

Semina oo; albumine tenui v. subnullo. — Herbae nunc suffrutescentes<br />

ramosœ; foliis oppositis; stipulis interpetiolaribus, 2-nis; floribus in<br />

cymas axillares dispositis. (Orbis ulriusque reg. ealid.) — Vid. ^.249.

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