542 LABIATAE 
hederacea, Trevisan.) Stems creeping and trailing. Leaves rounded or 
kidney-shaped. Corolla light blue. Damp places, mostly about dwellings. 
March-May. 
29. DRACOCEPHALUM, L. 
Perennial herbs, with opposite leaves and with blue or purple flowers 
in terminal or axillary clusters. Calyx tubular, very hairy, 5-toothed, 
the upper tooth usually much longer than the others. Corolla 2-lipped, 
the upper arched, lower 3-lobed. Stamens 4, ascending under the upper 
lip, the upper pair longest. 
D. parviflorum, Nutt. (Fig. 9, pl. 136.) AMERICAN DRAGON-HEAD. 
Leaves egg-shaped to lance-shaped, very deeply cut at margins, the teeth 
very sharp. Clusters of flowers dense, crowded in terminal spikes. Dry 
soil, northern New York and westward. May-Aug. 
30. AGASTACHE, Clayt. (Lophanthus, Benth.) 
Tall herbs, with opposite leaves on rather long leaf-stalks, margins 
coarsely toothed with rounded teeth. Calyx bell-shaped, 5-toothed, the 
upper teeth longest. Corolla 2-lipped, the tube scarcely exceeding the calyx. 
Stamens 4, the upper pair longest. Anther sacs nearly parallel. 
1. A. nepetoides, (L.) Kuntze. (Fig. 1, pl. 187.) Catnip GIANT- 
Hyssop. Stem 2 to 5 ft. high, sharply 4-angled, smooth. Leaves egg- 
shaped, pointed at apex, rounded or somewhat tapering at base, coarsely 
toothed with rounded teeth, 2 to 4 in. long. Flowers in terminal spike 
5 or 6 in. high. Calyx teeth slightly shorter than corolla tube. Corolla 
greenish-yellow. Woods, Vermont and southward and westward. July- 
Sept. 
2. A. scrophulariaefolia, (Willd.) Kuntze. (Fig. 2, pl. 137.) Fia- 
wort GIANT-Hyssop. Stem obtusely 4-angled, plant downy. Calyx teeth 
very sharp, decidedly shorter than calyx tube, Woods, Connecticut and 
westward and southward. July-Oct. 
$+ Corolla 5-lobed, one lobe much longer than the others, which are nearly 
equal; border of the longer lobe fringed 
31. COLLINSONIA, L. 
Tall herbs, with opposite leaves on long leaf-stalks and with loose termi- 
nal clusters of yellowish flowers, Calyx bell-shaped, 2-lipped, 2 of the 
teeth much longer than the other 3. Corolla much longer than calyx, 
5-lobed, 4 of the lobes nearly equal, the 5th much longer and depending, 
bordered with a fringe. 
C. canadensis, L. (Fig. 5, pl. 137.) Horse-patm. Stem 2 to 5 ft. 
high, smooth; leaves egg-shaped or oblong, bordered by coarse rounded 
teeth, 6 to 10 in. long, the upper on short leaf-stalks, Flowers in loose 
spreading, pyramidal clusters, aromatic, corolla yellow. Moist woods. 
July-Oct. 
} Corolla border very irregular. Stamens 4, extending beyond the tube of 
the corolla, the anterior longer. Calya 5- to 10-nerved 
