572 LENTIBULARIACEAE 
Bladders and closed flowers, borne among the thread-like 
leaves: | sheet de Uenbuctalee: 1h, roalhe tn cmatomni seme) Sen G LILES Raa 
Bladders but not closed flowers borne among the thread- 
like leaves. 
Spur oi corolla about as long as the lip. Flowers 
ee ON ieee’ (Ap iene er emer wee (Ue iaihies 
Spur of corolla usually obtuse, shorter than the lip 
of the corolla. 
Elowers © OF u2 Ss we» © ea <s) Jo eileen 
Blowers: 2 “to8 5) 0s) ).- 9 eo Se 3.) oe 
Flowers 5 to 12, the thread-like leaves 
feather-form 2.15% ee is) ue. (3 0) 1s SOM COMETaeeS 
Bladders usually borne on leafless branches. 
Leaf segments flat. . «. »« »« « « e WU, “ntermedsn 
eat segments round << . «= « «- « « | Wemnurocn 
1. U.cornuta, Michx. (Fig. 5, pl. 147.) Hornep BLappERWoRT. 
Flower scape 9 to 12 in. high, rooting in the mud, branches, when present, 
root-like, leaves reduced to scales, or none. Flowers 1 to 6, yellow, large, 
spur long and acute, corolla lips widely parted. Soft mud and shallow 
pools, northern to southern limits of our area. June-Aug. 
2. U. resupinata, Green. (Fig. 9, pl. 147.) Reversep BLADDERWORT. 
Seape arising from rooting shoots, 2 to 7 in. high, with a solitary purple 
flower; the spur directed nearly horizontally. Muddy shores, bogs, Maine 
to Florida. July-Aug. 
3. U. subulata, L. (Fig. 8, pl. 147.) Z1e-zaAc BLADDERWoRT. Flower 
scape thread-like, zig-zag from flower to flower, leaves few, linear, or none, 
Flowers yellow, lower lip 3-lobed, spur conic. Springs, wet sandy soil, 
Nantucket and southward. March-Aug. 
4. U. cleistogama, (Gray) Britton. (Fig. 4, pl. 147.) CiosEp 
BLADDERWORT. Scape 1 to 3 in. high, bearing 1 or 2 closed purplish 
flowers not larger than a pin’s head. Wet soil, eastern Mass., and New 
Jersey. August. 
5. U.inflata, Walt. (Fig. 6, pl. 147.) SworLteN BLAppERworRT. 
Flower scape 3 to 20 in. high; about its middle a whorl of leaves with 
inflated leaf-stalks, the leaves themselves finely divided. Lower leaves 
dissected, without inflated leaf-stalks. Among both sets of leaves are many 
air bladders. Corolla yellow. Ponds, throughout our area. March-Aug. 
6. U. purpurea, Walt. (Fig. 7, pl. 147.) PurpLe BLADDERWORT. 
Flower scape 1 to 6 in. high, without leaves or with scale-like leaves, bear- 
ing 1 to 4 flowers. Branches long, floating, the dissected leaves bearing 
numerous air bladders. Corolla purple. Ponds, mostly near the coast. 
May-Aug. 
7. U. vulgaris, L. (Fig. 1, pl. 147.) Common BLApDERWORT. 
Flower scape with a few scales or none, stout, 3 to 14 in. high, bearing 
from 3 to 20 rather large yellow flowers. Branches floating, sometimes 
a foot long, leaves in thread-like divisions, the segments round, bearing 
bladders, Brooks and ponds, our area. June-Aug. 
8. U. clandestina, Nutt. (Fig. 12, pl. 147.) Hippen-rrurrep BLap- 
DERWORT. Scape slender, 2 to 5 in. high, bearing from 3 to 5 yellow 
flowers. Branches floating, spreading, with many finely divided leaves 
with bladders and with closed bulblets (cleistogamie flowers), on rather 
long flower stems arising from the branches among the leaves. Shallow 
ponds, mostly near the coast. July. 
