208 SCROPHULARIACEAE (FIGWORT FAMILY) 



ADENOSTEGIA 



Annual. Leaves narrow, entire to dissected. Flowers in terminal leafy- 

 bracted spikes or fascicles. Sepals apparently 2. Corolla purple or yellow. 

 Stamens 4, 2 shorter or antherless or not present ; anther cells either pilose- 

 ciliate or with the base and apex minutely bearded, unlike, outer attached 

 by its middle, inner hanging by its end. — (Gk. adenos = a gland, stegia = a 

 sheath ; floral leaves and bracts are tipped with glands.) 



A. Plant not viscid-glandular; upper calyx lobe 2-toothed or emarginate. 



B. Corolla purplish; anther-bearing stamens 2, rudimentary stamens 2; anthers 



i-celled; capsule 8-seeded. C. E. A. capitata 



BB. Corolla yellow; anther-bearing stamens 4; anthers 2-celled; capsule 20-seeded. 



£. A. ramosa 



AA. Plant viscid-glandular; upper calyx lobe acuminate. U. A. visclda 



PEDICULARIS (Lousewort) 



Flowers in terminal spikes or racemes. Calyx tubular. Corolla strongly 

 2-lipped ; tube cylindric ; upper lip laterally compressed ; lower lip erect 

 or ascending, 3-lobed; lobes of lower lip spreading or reflexed, middle one 

 smallest. Stamens 4, 2 shorter. Seeds many. — (L. pediailus = a louse; 

 it was thought these plants caused lice in sheep.) 



A. Stem leaves alternate or opposite. 

 B. Leaves doubly crenulate; corolla whitish or yellowish. W. C. E. 



P. racemosa fELEPHANT trunk) 

 BB. Leaves or some of them pinnately parted. 

 C. Corolla whitish or yellowish. 

 D. Basal leaves none. U. P. howelUi 



DD. Basal leaves present. 

 E. Leaf lobes linear; calyx 8-10 mm. long; corolla beak slender, inrolled. C. E. 



P. contorta (elephant trunk) 

 EE. Leaf lobes lanceolate; calyx about 18 mm. Jong, corolla beak wide, hood- 

 like. W. C. E. P. bracteosa 

 CC. Corolla scarlet or purple. 

 F. Corolla beaked. 

 G. Stems leafy; corolla beak long, threadlike. W. C. E. 



P. groenlandlca (butterfly tongue) 

 GG. Stems scapose or with 1 pair of leaves; corolla beak short, conic. C. E. 



P. omithorhyncha (bird beak) 

 FF. Corolla beakless. 

 H. Plant glabrous; stems branching; calyx 2-cleft; corolla purplish, 12 mm. 

 long. W. C. P. parviflora 



HH. Plant pubescent or glabrate; stems simple; calyx s-toothed; corolla scar- 

 let, 25-37 mm. long. U. C. P. densiflora (scarlet lousewort) 

 AA. Stem leaves in whorls or nearly so. W. P. menzlesii 



