82 HISTOIRE DES PLANTES. 
GENERA 
I. ALISMEÆ,. 
1. Atisma L.— Flores hermaphroditi; receptaculo convexiuseulo. 
Sepala 3, herbacea, imbricata, plerumque persistentia subque fructu 
erecla, patentia v. reflexa. Petala 3, alterna, multo majora, tenuià 
imbricata, decidua. Stamina 6, hypogyna v. subperigyna, per parià 
sepalis opposita; filamentis subulatis; antheris subbasifixis, forma 
variis, extrorsum v. ad margines rimosis; nune raro 9. Germinis car- 
pella pauca v. c, libera, aut verlicillata, aut spiraliter conferta; 
germine 1-loculari, 4-ovulato; ovuli adscendentis micropyle extror- 
sum v. raro (Elisma) introrsum infera ; stylo ventrali v. subapicali, 
brevi v. longo, apice varie stigmatoso-papilloso. Fructus multiplex, 
sæpius calyce stipatus v. nune involutus; carpellis paucis v. ®, 
compressis v. lurgidis, dorso sæpe S3-costalis, siccis, coriaceis V. 
induratis, indehiscentibus. Semen adscendens v. subbasilare com- 
pressum ; integumento membranaceo : embryonis carnosi condupli- 
cato-hippocrepici radicula summa incrassata. — Herbæ paludosæ 
perennes acaules (lactescentes); rhizomate varie incrassato; foliis 
basilaribus erectis v. fluctuantibus, alternis, petiolatis, ellipticis, 
lanceolatis v. sagittatis, nunc punctatis v. lineolatis; floribus cymosis; 
cymis sæpius 1-paris in scapo communi spurie umbellatis v. composite 
racemosis. (Orbis utriusque reg. aquat. temp. et calid.) — Vid. p. 73. 
2. Limnophyton Mi0.! — Flores fere Alismatis, 1-sexuales; 
staminibus 6, leviter perigynis, in flore masculo majoribus ; antheris 
ind. bat., III, 242. - MICHEL, Bol. Jahrb., 11, 481; Pflansenfam., 106. til 
231 , in Flora 
1 FL — M 
in DC. Mon. Phaner., TI, Alism., 2 — B. , ee — Dipseudochorion BUCHEN., in 
Gen., LE, 1005, n. 3. — Bucnen., in Engl. (1865), 241. 
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