W^ Hydrocharideae DG. 



gentia, apice summo subreciirva, hyalina, clein tota recurva ; 

 filamenta 3 brevia erecta, laciniis perigonii exterioribus op- 

 posita, alba; antherae subgioboso-reniformGS luteae 2-locula- 

 tae, elastice dehiscentes ; jwllen globosum sat magnum album ; 

 spatha floris pistilligeri primo conica, cylindrica, 0,02 poll. 

 longa, tenerrima, basi extus pilis teneris cincta, dein cylin- 

 drica, acuta, postremo apice lateraliter rumpens 0,2 poll. longa ; 

 flos pistilliger in basi spathae sessilis, primo e basi crassiore 

 cyhndricus , apice clavatus , dein perigonii tubo elongato, 

 spatha rupta exsertus, germine intra spatham remanente; 

 perigonium germini adnatum, supra id constrictum in tu- 

 bum tenuissimum gracilem flexuosum, hyalinum, 2 poll. lon- 

 gum; limhus ante anthesin clavatus, obtusiuscuhis, dein pa- 

 tentissimus, hexaphyllus, hyalinus, in aquae superficie na- 

 tans; foliola uninervia biseriata, exteriora obovato-oblonga, 

 basi cuneata, apice concaviuscula hamulata, interiora angus- 

 tiora, obovato-Knearia, obtusiuscula ; germen Hneare-oblongum, 

 1-loculatum; gemmulae 3 — 5, inferiores adscendentes, supe- 

 riores pendulae ; raphe crassa gemmulas semicingens ; stylus 

 longissimus, in tubo perigonii inclusus, nec adnatus, capilia- 

 ris ; stigmata 3 in fauce perigonii exserta divaricata, oblongo- 

 lineria, viridia, crassiuscula, tota papilHs longis, obtusis, hya- 

 hnis tecta aut potius cellulis obtusis marginahbus haud ad- 

 pressis sed patentibus , chlorophylli granulos pauciores tan- 

 tum continentibus , e quorum motione circulatio succi opti- 

 me conspicienda ; fructus baccatus indehiscens cyHndricus 

 viridis, 0,6 poU. longus, in styhim vegetum attenuatus, basi 

 tuberculato-muricatus, versus apicem spinuHs muricato-ramo- 

 sis, patentissimis, sat crassis obsitus, 1-loculatus, succo giu- 

 tinoso, hyaHno foetus ;' semina 5 ope fiH umbilicaHs brevis, sub 

 apice inserti superiora pendula, inferiora erecta, albida gia- 

 bra, eUiptica, oblonga, utrinque attenuata, apice acuminatis- 

 sima, 0,1 poU. longa, 0,02 polL crassa; memhrana extertia^ 

 crassa viridiuscula, coriacea, glabra, extus tesseUata, tesseUae 

 sublcnte forti sunt celHilae giobulos oblongos (amyHim)5 — 6 con- 

 globatos continentes dodecaedrae ; interna hyaHna, tenerrima; 



