——— 4 305 
Dir. geminiscapa. 
U, scapis geminatis nudis, bracteis solitariis basi fixis, 
lob, calye, subaequalibus ovatis obfusis, cor, Inteae Zab, in- 
tegris sup. ovato-roltundato nune rettso, inf. longiore late 
rotundato calcar subineurratum cylindrieum obtusum exce- 
dente. — America borealis. (Dr. Greene), 
Herba fluitans, Canlis ciroiter %/, ped.; rami foliosi 
parce vtriculiferi; praeterea rami aphylli atricnliferi (in mo- 
dum U. intermediae) adsunt, Scapi semper geminati, allero 
abortivo, altero 3—& poll, longo. Flores 2-5 corymboso- 
sacemosi. Pedie. 3—4 lin. basi ]-bracteati, Bracteae basi 
Gxae. Calye. lobi eireiter $/, lin. longi. Cor, eireiter —5 
lin, longa (magnitndine U. intermediae) lab. sap, 2 — 23/5 
kin. longo, calcare vix 2 lin. longo. Caps. 1 — IN, lin, 
diam. globosa, semibivalris, Semina multa parva, (V.s. in 
Herb. Hooker). 
Utr. resupinata, (Greene in Bigel. Fl. Bost, ed. 3). 
U. scapo 1-floro, cor. luteae labiis sursum spectantibus, 
sup, obovato integro, inf. 3-lobo calcari eylindraceo obtnso 
subaequali. 
Ch. Greene ealcar deseribit car. 4-plo longius; quom 
vero specc. ab ipso anclore missa viderim, certo dicere pos- 
sum in diagnosi el. viri errorem esse. (V. s, in Herb, reg, 
Berol., Martiano et Hookeriano.) 
Utr. cornuta, (Mich. Fl. bor. Am. 1. p. 12). 
U. seapo squamoso 1-multiflero, bracteis ternatis basi 
füixis, lob. ealyc, obtusiuscalis inaequalibus integris v. infe- 
riore apice dentioulato, cor, Inteae lab. sap. ovato obtuso v. 
rariss acoto nunc emarginato, inf. ampliato subrofundato 
obtaso v. apienlate, calcari descendenti rectinsculo v. intror- 
sum enrvato coonico-subulato acuto subaegnali, eo breviore v. 
longiore, 9 — Hadem quae U, personata Le Conie et U. 
20r Bd, 3s Heft, 20 
