36 MONOCOTYLEDONEÆ. ALISMA. 
superantia. Stamina 6, 3 sepalis, 3 petalis opposita; antheræ 
extrorsæ, fere basifixæ, latee, filamentis complanatis fere duplo bre- 
viores. Ovaria 9-12. Carpella matura 5-8, stylo filiformi quondam 
caduco aristata, obovata, vix lateraliter compressa, dorso 3-5 cos- 
tata, epicarpio tenui, endocarpio crasso, fere lignoso, inter costas 
lineis resinosis notata, 4 mill. longa. Semina testa tenui striata. 
B, majus (A. reniforme Don). Plante in omnibus partibus majores, 
ceterum omnino conformes. Petiolus usque ad 50 cent. longus. Limbus 
forma variabilis, late ovatus vel reniformis, apice rotundatus vel 
emarginatus, basi profunde cordatus vel vix sinuatus, 4-17 cent. latus, 
5-12 cent. longus, 11-15 nervius. Scapus usque ad 1 met. altus. 
Stamina nonnunquam 9. 
Var. à in aquis stagnantibus et limosis parum profundis Europæ 
temperate, passim : in Gallia (dép. Indre et Isère, Gren. et God.; 
dép. Ain, Mutel); in Borussia in lacu Tempelhof prope Berolinum, in 
laeu Longritz in Mecklemb.; prope Francfurt a. O.; in Austria ad 
Salurn in Tyrol (Haussmann), prope Sicheldorf in Styria (Maly), in 
Bosnia? (Asch. et Canitz) ; in Croatia, Dalmatia et Carinthia dubium. 
(Neilreich); in Italia sept., in Pedem. lae. Candia et Viverone, prope 
Verolengo (All.), in Apennino prope Bolognam (Bassi), in palud. 
Bientina prope Altopascio (Ant. Mich. ex Parlat.) ; in Polonia tantum 
prope Crynica ad Zamosc (Rostaf.); in Rossia med. Lithuan. (Ledeb.). 
Exemplaria ex locis calidioribus orta ad var. ( transeunt. Var. Bin 
India orientali; Penjab (Hook. et Thoms.); in mont. Himalaya usque 
ad 1000 met. alt. (Strachey); Nepalia (Wallich n. 4997), etc.; East 
Bengal (Griffith, etc.); prope Mangalore (Wight n. 2786 in herb. Kew 
et Petrop.); et in Australia, Burnett River, Moreton Bay (Mueller), 
forma inter varietates a et 5 intermedia. 
4. A. nymph:eifolium (Griseb. Catal. plant. Cuba 1866, 
p. 218); foliis sinu angusto profunde cordatis, lineis pellucidis, bre- 
vibus, obliquis notatis ; staminibus 6 ; carpellis 8-10, vix aristatis, ad 
costas tuberculatis et dorso resinoso-canaliculatis. 
9 Habitus Al. plantaginis. Rhizoma breve, radicibus fibrosis dense 
obductum. Folia exteriora submersa, limbo fere vel omnino obsoleto 
ad phyllodia reducta ; petioli cylindrici, intus irregulariter transverse 
septati, basi vaginantes, 30-40 cent. longi ; limbi late ovati, basi sinu 
angusto profunde cordati, lobis rotundatis approximatis, apice rotun- 
dati, 10-12 cent. longi, 7-8 cent. lati, nervis primariis 11-13 parum - 
