ALISMA. ALISMACEÆ (AUCT. M. MICHELI). 35 
micropyle extrorsa (ideo Alisma, nec Damasonium). Carpella ver- 
ticillata; vix basi coalita, divaricata, compressa, dorso tri-costata, 
parietibus crassis, stylo longe aristata 6-8 mill. longa. Semen fere 
ut in Al. Plantago. 
In California, in uliginosis vallis Sacramento (Hartweg n. 2015). 
prope Jone Valley (Torrey l. c. floret maio; Lemmon Fl. of Cali- 
fornia, n. 212 in herb. Candoll., Mus. Paris. et Kew; Bigelow exped. ` 
Whipple in herb. Kew). 
3. A. parnassifolium (Bassi in Linn. Syst. veget. ed 12, 
p. 1767. — Mant. plant. p. 371); foliis late ovatis, cordatis, coriaceis,. 
nervis secundariis numerosis, cum lineis pellucidis alternantibus; 
sepalis post anthesin erectis; staminibus 6-9; carpellis vix compressis, 
irregulariter verticillatis, stylo gracili longe aristatis. — Reich. Ic. 
crit. 3, tab. 228; Reich. Ic. fl. germ. 7, tab. 56; Till. Pis. tab. 46 fig. 1: 
Willd. Spec. 2, p. 278; Róm. et Schult. Syst. 7, p. 1604; Spreng. 
Syst. 2, p. 163; Kunth Enum. 3, p. 150. Al. dubium Willd. FI. 
Berol. 1787, p. 132 (forma petiolis longissimis et foliis natantibus). 
A. Damasonium Willd. Ibid. (forma in locis ab aqua derelictis, petiolis 
brevibus). Caldesia parnassifolia Parl. Fl. Ital. 3, p. 598. Echino- 
dorus parnassifolius. Engelm. in Asch. Fl. Mark. Brand. 1864, 1, 
P. 651; Muell. Fragm. 8, p. 214. Al. reniforme Don. Fl. Nepal. 
p.22; Wight Ic. 322; Benth. Fl. Austral. 7, p. 186. Alisma calo- 
phyllum Wall; List. 4997. 
a, minus. 9j, Rhizoma breve, obliquum, fibrillis radicalibus longis 
crassisque obductum, stolones elongatos, graciles agens. Folia radi- 
calia; petioli complanati, basi dilatato-amplectentes intus lacunosi, 
transverse septati, 5-10 cent. longi et ultra; limbi late ovati, basi pro- 
funde cordati, apice sensim angustati, acuti vel obtusi, marginati, 2-3 
cent. longi, 1 */,-2 cent. lati; nervis primariis 7-11, secundariis nume- 
rosissimis, approximatis, parallelibus, patentibus, venis paucissimis ; 
lineæ pellucidæ nervis secundariis parallele, iisdem æquilongæ et 
regulariter alternantes. Seapi erecti, folia superantes, 50-60 cent. 
longi, superne paniculati. Flores in quoque verticillo sæpius tres, 
pedicellis 20-25 mill. longis, erectis. Inflorescentia sæpe monstrosa 
gemmas viviparas, numerosas gerens. Bracteæ ad basim verticillorum 
tres lanceolatæ, acuminatæ, acutæ, multinerviæ, 6 mill. longæ. Sepala 
late ovata, margine seariosa, obtusa, emarginata, multinervia, 4 mill. 
longa, 3 mill. Jata, sub anthesi patentia, postea erecta, fructum 
amplectentia. Petala late ovata, margine irregulariter dentata, sepala 
