NORTH AMERICAN 
13 
scapes with 5 to 7 flowers on long pedicels, ca~ 
lix lanceolate acute, segments of corolla linear 
acute, 3 or 4 as in Littorella, some flowers ge- 
minate. 
749. Rivina or Pieucea acuminata Raf. 
Riv. levis of Mg. and Nut. In Col. Herb, not of 
Antilles nearer to hrasiliensis !— Herbaceous 
smooth, stem branched sulcate, leaves ovate 
oblong acuminate base rounded, margin subre- 
pand ; racemes axillary erect longer than leaves 
— From Florida to Arkanzas, 2 or 3 feet high, 
leaves 3 inches long thin and petiolate, racemes 
4 to 6 inches long, flowers white, sepals of peri- 
gone 4 ovatoblong obtuse persistent and green- 
ish after anthesis, stamens 4 or isopere as in 
the real G. P iercea of Miller, see my fl. tellur. 
635, Rivina having 8 or 12 stamens. Habit 
like Phytolaca but berries globular one seeded, 
types of Nat. Family Rivinibia fl. tel. 634. 
750. Rivina or Pierce a obliquata Raf 
Riv. humilis of some Am. bot. not of Antilles — 
Herbaceous nearly smooth stem simple sulcate, 
leaves ovatoblong subrepand, base commonly 
obliqual, end attenuate obtuse and mucronate, 
petiols somewhat pubescent, racemes erect 
equal to leaves. — ^ everal sp. have been blend- 
ed in R. humilis, this is quite distinct, found in 
Florida by Baldwin; a small plant hardly pe- 
dal, leaves smaller 1 or 2 inches long, pubes- 
cence extending sometimes to nerves and race- 
mes, these short with fewer and smaller flow- 
ers, sepals of calix linear oblong obtuse whitish, 
style elongate, stig. capitate — as our botanists 
have mistaken these two plants (they are not in 
Elliot) it may be needful to state that the real 
R. or P. humilis is frutescent quite pubescent, 
not sulcate, with acuminate leaves and larger 
