132 FAM. 160, 161. 



lipped, spurred. Spring. - Pinguicula, Butterwort 



P. pumila, Valentine flower. Scapes not villous at the base; corolla light violet 



to white; spur longer than the sac-like base of the corolla, awl-shaped. 

 P. elatior. Scapes villous at the base; corolla purple to white; spur shorter than. 



the sac-like base of the corolla, obtuse. 

 P. lutea. Scapes pubescent; corolla golden yellow; spur awl-shaped. 

 1. Sepals 2; corolla- tube closed by the palate; — aquatic or terrestrial 

 scapose herbs with no stems or with stems creeping in wet soil, 

 or more or less floating in the water; leaves dissected, and blad- 

 der-bearing or almost absent; flowers solitary or racemose; sepals 

 slightly united; corolla 2-lipped and spurred. Spring to Fall. 



Utricularia, Bladderwort 



a. Stems more or less floating with solitary scapes arising from the nodes. 



U. purpurea. Leaves none; racemes 1-4 flowered; flowers violet- 

 purple. Ponds. 



U. inflata. Leaves dissected; each scape with a whorl of 6-9 inflated 

 bracts; racemes 5-12 flowered; flowers yellow. Ponds. 



U. radiata (inflata var. minor). Whorl of 4-6 inflated bracts; racemes 



1-3 flowered. 



b. Stems converging towards the base of the scape or scapes. 



U. fibrosa. Leaves numerous, dissected; racemes 2-5 flowered; flowers 

 yellow, spur about as long as the upper lip of the corolla. 



c. Minute herbs; scapes solitary, rooting in the mud. 



U. cornuta. Racemes spike-like, 2-8 flowered; pedicels as long as the 

 calyx; corolla yellow. In sphagnous places. Summer. 



U. subulata. Racemes 1-9 flowered; pedicels much longer than the 

 calyx; corolla yellow. Wet pine-land. Spring. 



161. Orobranchaceae, Broom-rape Family. 



Parasitic herbs on the roots of other plants; leaves 

 scale-like; flowers mainly perfect; calyx of 4-5 united sepals; 

 corolla with bilabiate or irregular border, sometimes wither- 

 ing; stamens 4 didynamous, adnate to the corolla; ovary 

 superior, 1-celled, with 2 or 4 placentae; style 1, stigmas 

 1-2; fruit a capsule. 



Stems fleshy, and with the leaf-scales and flowers pale-yellow or brown- 

 ish; flowers perfct in terminal bracted spikes; calyx with 2 bract- 

 lets, split on the lower side, 3-4 toothed on the upper; corolla- 

 tube curved, border 2-lipped; stamens slightly didynamous, a 

 staminodium sometimes present; ovary with 4 placentae. 



Conopholis, Squaw-root 

 C. Americana. Stems clustered; calyx longer than the bracts; corolla longer 

 than the calyx. Spring and Summer. 



162. Bignoniaceae, Trumpet- creeper Family. 



Trees, shrubs erect or climbing, sometimes herbs, with 



exstipulate, chiefly opposite leaves, and showy monopeta- 



lous, irregular flowers; calyx 2-lipped, 5-lobed or truncate; 



corolla 2-lipped or 5-lobed, tubular or campanulate; stamens 



