564 SCROPHULARIACEAE 
18. BUCHNERA, L. 
Rough, hairy herbs, which turn black in drying. Leaves opposite or 
the upper alternate. Flowers white, blue or purple, opposite in a terminal 
narrow cluster, rather large. Calyx tubular with 5 equal teeth; corolla 
tube cylindric, the border of 5 radiating lobes, nearly regular. Stamens 
4, not extending beyond the throat of corolla. 
B. americana, L. (Fig. 2, pl. 144.) Biur Hearts. Rough hairy, 
stem 1 to 2 ft. high, slender. Leaves oblong to lance-shaped, with deep 
indentations at margins. Corolla deep purple. Western New York, New 
Jersey. Sandy soils. June-Aug. 
19. DASYSTOMA, Raf. (Gerardia, L.) 
Erect, branching herbs, with opposite leaves, usually deeply lobed, or 
upper leaves sometimes alternate and with yellow trumpet-shaped showy 
flowers in leafy clusters. Calyx 5-lobed; corolla lobes slightly unequal, 
yellow, the tube lined with hairs. Stamens 4, not extending beyond the 
throat of the corolla, quite unequal. Capsule spindle-shaped. 
Plant hairy. ; 
Gorolla, hairy 2 8. 0 3) «pegs + c's ss SS SE pee 
Corolla not hairy Fy ele Uma usr ie) ee ee is en ee nee 
Plant not hairy. 
Leaves mostly entire or somewhat toothed . . . . . . D. laevigata 
Teaves mostly deeply cut ~ 2 << © «6 «© « «© « « & «| Do giremica 
1. D. pedicularia, L. (Fig. 5, pl. 144.) Fern-Leavep Fatse Fox- 
GLOVE. Stem branched above, 1 to 4 ft. high, plant more or less covered 
with sticky hairs. Leaves opposite or a few upper ones alternate, fern- 
like, with the margins of the lobes finely toothed. Corolla 1 to 2 in. long, 
downy outside and inside. Dry woods, throughout our area. Aug.-Sept. 
2. D. flava, (L.) Wood. (Fig. 6, pl. 144.) Downy Fase Fox- 
GLove. Grayish downy, stem 2 to 4 ft. high, with few branches, often 
more. Leaves oblong or lance-shaped, obtuse at apex, the upper with 
plane margins, the lower with margins lobed. Corolla 13 to 2 in. long, 
smooth on outside, hairy within. Dry woods, southern New York, eastern 
Mass., and northward. July-Aug. 
3. D. virginica, (L.) Britton. (Fig. 4, pl. 144.) SmootH FALsE 
FoxcLove. Smooth, stem sparingly or not at all branched. Leaves long 
and narrow, deeply incised with double incisions of margins. Corolla 1} 
to 2 in. long, smooth on the outside, hairy within. Stem 3 to 6 ft. high. 
Rich woods, throughout our region. July-Sept. 
4. D. laevigata, Raf. (Fig. 3, pl. 144.) ENTIRE-LEAVED FOXGLOVE. 
Stem simple or sparingly branched, 1 to 3 ft. high. Plant not hairy or 
only slightly so. Leaves usually with leaf-stalks, lance-shaped or some- 
what egg-shaped, the margins without teeth or lobes, or the lower leaves 
toothed or incised. Flower stem shorter than the calyx. Corolla 1 to 
14 in. long. Dry woods and thickets, Penna., and southward. July-Aug. 
20. GERARDIA, L. 
Plants, in our region, all slender herbs, with opposite linear leaves and 
large showy trumpet-shaped flowers, usually purple. Calyx 5-toothed, the 
