A GUIDE TO THE WILD FLOWERS 261 



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8bs 



Stems club-like, scaly, brown ; flowers yellow 



Squaw-root no. 806 



Stems simple or branched, not thick or club-like 



Stems unbranched, sticky ; flowers solitary, violet-white . . 



Cancer-root no. 807 



Stems branched, not sticky; flowers in spikes, purplish-white 

 Beech-drops no. 808 



803. Bladderwort. Setiscapella subulata. ( Utricularia subu- 

 lata.) (Lentibulariaceac.) A delicate leafless plant with an 

 erect, usually zig-zag flowering stalk, 3-9 in. high, upon which 

 there are a few tiny, remote scales, and at the summit a 

 cluster of usually 2-7 flowers, sometimes more. Flowers 

 about yi in. wide, yellow, very irregular, but not spurred. 

 In wet sand. Nantucket to Florida, west to Arkansas and 

 Texas. Fig. 803. See also Nos. 956, 957 and 959. 



804. Bladderwort. Stomoisia cornuta. (Utricularia cor- 

 wMfflftz.) {Lentibulariaceac .) Similar to No. 803 in habit, but 

 taller, and with flowers about ^ in. wide and rather long 

 spurred. Edge of ponds or in bogs. Newfoundland to Florida, 

 and westward. August. Fig. 804. See also Nos. 956, 957, and 



959- 



805. Screw-stem. Bartonia virginica. (Gentianaceae.) A 

 leafless erect, rather stiflF plant of moist grassy places, 4-12 

 in. high, the leaves reduced to remote, tiny, opposite scales. 

 Flowers at the summit in an open sparse cluster, greenish- 

 yellow, scarcely Yi^ in. wide. Corolla tubular, its 4 lobes shal- 

 low, pointed, erect. Nova Scotia to Florida, and westward. 

 August. Fig. 805. A related species, B. paniculata, with 

 branching flower clusters is found in similar situations from 



