PODOSTEMACEARUM MO.NOGRAPHIA. 71 



Lacis Riedelii Bong. -= Apinagia Riedelii Tiil. 



Lacis pygmœa Bong. = Apinagia pygmcca Tul. 



Lacis membranaca-a Bong. = Apinagia mcmbranacea Tul. 



Lacis dislicha Chain. = Podoslemon Chamissois Tul. 



Lacis myriophyl/oides D. Don. (mss. in Herb. Lainbertiano nunc Lessertiano ) nil nisi 

 Mynophylli species est; speciniina h ujus planta;, quse vidi, eChile a Cumingio sunt relata. 



IV. MARATHRUM. 



Marathrum Hunib. et Bonpl. — HBK. — Garda., in Calcutt. Journ. ofnat. 

 hist., vol. Vif, n° xxvi, et in Flora od. alhj. bot. Zeit., II Reihe, tom. VIII, 

 p. I, p. 34 (i85o). =Non Rafinesq. (quod Seselis sp. videtur). = Movrera 

 (sect. Marathrum) Endl., Gen. PL, p. 269, n° i833. = Lacis (sect. Mara- 

 thrum) Chamisso, in Linn., IX, 5o4- = Lacidis sp. Bongardo et Preslio. 



Flos nudus, androgynus, spatha s. involucro penitus clauso 

 primum conclusus, ex eodem longe tubuloso facto, breviter Ja- 

 cero et fréquenter bilabiato , dein prodiens pedicellocpie recto 

 longe exserto suffultus; pedunculus iste apice staminifero sœpius 

 amjiliatus et calyculiformis. AndroceuxM perfecte verticillatum, 2- 

 seriatum, marcescens, série externa antberis orbata. Staminodia 

 5-i o brevissima membranacea lata, subtriangularia vel lineari- 

 acuta, libéra. Stamina totidem illis alterna, libéra; fdamentis planis 

 latis sursumacutis;a?î//iemoblongis obtun's integrisque, basi eniar- 

 ginatis, dorso inferno affixis, inrtrorsis, 2-lobis, 2-rimosis; polline 

 ovoideo-trigono. Ovarium centrale ellipsoideum, plus minus stipi- 

 tatum, 8-striatum, 2-loculare indefiniteque ovulatum; placenta 

 axili crassa septo angusto marginata; ovulis anatropis et peritrope 

 subsessilibus. Stigmata 2 linearia crassa angulosa erecta, basi bre- 

 vissimecoalita, apice intégra v. quasi erosa, marcescentia. Capsula 

 ovario conformis 8-nervia (nervis subsequalibus), 2-locularis, sep- 

 tifrage 2-valvis, valvis aequalibus persistentibus et demum incur- 

 vis. Semina creberrima. 



HerfjE submersœ, acaules, Americœ tropicœ indigence, rhizomate 

 crasso globoso-difformi v. breviter expanso et dichotome partito ; foliis 



