PINGUICULACEAE 1237 
radiata Small. Stems a i leaves 6-10- -dichotomously dissected, 
copiously bladder-bearing: e ect, 6-12 em. tall, be gee near the mid- 
dle a single whorl of 4-7 e nici infated floats, ‘which a more or less 
erum at the base, less than 4 cm. oe i pinnately dissected near the 
tip: raceme 1-3-flowered: pedicels 8-20 mm. long, spreading or recurved in 
fruit: irs Td about 1.5 em. broad, lower Dp 3-lobed, abot twice 
as long as pia conic emarginate spur.—Pon , Coastal Plain and 
New England a Fla. to Tex. and Me.—Spr r.—fall. 
flata Walt. Stems submersed, often RUE elongate: leaves 10—12- 
dichotomously eee copiously bladder- bearing: scapes erect, 2-6 dm. tall, 
bearing : whorl of 4 nspicuous inflated braets, whieh are more or less 
confluent at Es hase, zi em. long, and pinnately dissected from near the 
middle: race red: ui 16-32 mm. long, spreading or recurved 
in fruit: Seer eae ree . broad, the co lip 3-lobed, about twice 
as long as the appressed conic um spur.—Ponds and ditches, Coastal 
Plain, Fla. to Del.—Spr.—fall. 
BIOVULARIA Kam aquatic herbs. Stems submerged. 
cuve es alternate, dissected. a E us on the leaf- "segments, the mouth 
2-beaked. Scapes 1-3-flowered, the part þe- 9 
low lowest braet obsolete, the lowest braet 
hence sessile on the stem; bractlets 
none. Calyx-lobes 2, dens distinet. Corolla 
2-lipped, the lips entire, the palate not 
prominent. Ovules only 2. Fruit indehiscent, 
with a single seed.—One species, in tropical 
and subtropical America. mE 
. B. olivacea (Wright) Kam. 
delicate, capillary, forming mats o 
little beneath the surface of the wate 
leaves mou of a single se gment, bearin 
one bladder; seape ened any, the bracts 
and ps s, if more than one, approximate at its base; longest pedicel less 
m. 
than 1 em. long; ae about 0.5 mm. long; corolla yellowish, less t 
ong: spur e oo olivacea Wright. |—Shallow water, near San- 
rd, I., S. A.) One of the smallest (perhaps the 
fo Sem —(W. 
smallest br Ee = P flowering plants. 
9. VESICULINA Raf. Aquatic herbs. Stems submersed, the branches 
-whorled, decompound. Leaves none. Bladders terminal, the mouth (in ours) 
naked. Scapes l-4-flowered: scales below | 
the lowest pedicel none: bractlets none. 
Calyx-lobes 2, nearly distinet. Corolla 2- 
lipped: lower lip 3-lobed, the lateral lobes 
saeeate, forming together a prominent di- 
vergently 2-lobed palate, the middle lobe 
short.—About 6 species, Ameri 
purpurea  (Walt.) . Raf. Stems 
elongate, the branches numerous, whorled, 
verticillately deu bla dders soli- 
tary, terminating many of the ultimate 
branchlets, the orifices without projecting 
processes: scapes erect, slender, spongy- 
