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V. HVDROSTACIIYDE.E.<br />

PODOSTÉMACÉES. Î?A<br />

17. Hydrostachys DUP.-TH. — Flores diœci nudi; masculo e<br />

staminé 1, ad bracteam axillari, constante; filamento brevissiino; antherae<br />

loculis 2, discretis extrorsis, rimosis. Floris fœminei germen<br />

1-loculare; styli ramis 2, lateralibus, divergentibus; placentis parietalibus<br />

2, antica posticaque, oc-ovulatis; ovulis analropis. Fructus<br />

capsularis, styli ramis diu coronatus, rima longitudinali postica dehiscensfolliculiformis,<br />

v. demum anticequoque longitudinaliter rimosus<br />

et incomplète 2-valvis. Semina oo, exalbuminosa; embryonis recti carnosi<br />

radicula crassaoblusa. — Herbie aquaticœperennes; caule crasso<br />

tuberiformi; foliis lateralibus, basi dilatatis ibique intus ligulatis,<br />

simplicibus, semel, bis v. ter pinnatifidis v. pinnalisectis; rachi lobulis<br />

saepe oo, praéter lobos, appendiculata; floribus in spicas pedunculatas<br />

cauli adnato insertas dispositis; bracteis spicarum oo-seriatis, l-floris,<br />

imbricatis, demum laxioribus, flores fruetusve obtegentibus, cymbiformibus<br />

v. cucullalis, nunc extus rugoso-papillosis; papillis a basi<br />

ad apicem scnsim majoribus; pilorum fasciculis 2 nunc ad flores<br />

fœmineos lateralibus bracteoliformibus. — Vid. p. 204.<br />

IX. — L s

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