554 LABIATE GLECHOMA 



DRACOCEPHALUM 



and comparatively large violet or blue flowers in small verticillate 

 axillary clusters. Calyx oblong-tubular, 15-nerved, oblique at 

 tlie orifice, unequally 5-toothed. Corolla-tube exserted, enlarged 

 above, the limb bilabiate : upper lip erect, 2-lobed or emarginate, 

 the lower spreading, 3 lobed. Stamens 4, all antberiferous, 

 not exserted : anthers 'J-celled, the cells divergent. Nutlets ovoid, 

 smooth. 



G. HEDERACEA L. Sp 57K. (GROUND IVY.) Pubescent perennial : stems 

 creeping, 6-18 inches long, the branches ascending : leaves nearly orbicular 

 or reniform, cordate at base, 6-18 lines in diameter, green both sides, 

 coarsely crenate: clusters few-flowered: bractlets shorter than the calyx, 

 subulate: calyx puberulent, its teeth acute or lanceolate-acuminate, about 

 one-third as long as the tube: corolla-tube 2-3 times as long as the calyx : 

 upper pair of stamens much longer than the lower pair. In waste places, 

 escaped from gardens. 



14 DRACOCEPUALUM L, Sp. 594. 



Herbs" with dentate incised or entire leaves and blue or purple 

 flowers in axillary and terminal bracted clusters. Calyx tubular, 

 15-nerved, straight or incurved, 5-toothed, the upper teeth much 

 longer than the others, or bilabiate with the 3 upper teeth more 

 or less united. Corolla expanded above, its limb bilabiate: upper 

 lip erect, emarginate, the lower spreading, 3-lobed, the middle 

 lobe largest and sometimes 2-cleft. Stamens 4, all antheriferous, 

 the upper pair longest: anthers 2-celled, the cells divaricate. 

 Nutlets ovoid, smooth. 



D. parviflorum Nutt. Gen. ii, 35. A somewhat pubescent annual or 

 biennial : stem rather stout, usually branched, 6-24 inches high : leaves 

 lanceolate, ovate or oblong, serrate or the lower incised, acute or obtuse 

 at the apex, rounded or narrowed at ba?e, thin, 1-3 inches long, all slender- 

 petioled : flowers numerous, in dense terminal spikes, and sometimes also 

 in the upper axils: bracts ovate to oblong, pectinate with awn-pointed 

 teeth, shorter than or equalling the calyx: pedicels 1-2 lines long: upper 

 teeth of the calyx ovate-oblong, longer than the narrow lower and lateral 

 ones, all acuminate: corolla light blue, scarcely longer than the calyx. In 

 dry rocky or gravelly soil, Alaska to Idaho and New York. 



Tribe 5 Scutellarieas Benth. in DC. Prodr. xii, 407. Herbage 

 bitterish, little or not at all aromatic. Calyx bilabiate, closed in 

 fruit; the lips entire. Corolla bilabiate; but with the small lateral 

 lobes more connected with the galeate upper lip: lower lip therefore of 

 a single lobe. Stamens 4, ascending and parallel: both pairs fertile; 

 the lower or outer pair longer and with anthers mostly 1-celled by 

 abortion: those of the upper pair 2-celled. Upper fork of the style 

 v : ,ry short or none. Nutlets depressed or globular. 



15 SCUTELLARIA L. Sp. 598. 



Annual or perennial herbs, rarely shrubby, with blue or violet 

 flowers in terminal or .-ixillary bracted mostly secund spike-like 

 racemes, or !-;> in the axils. Calyx campanuhite* bilabiate; the 

 lips entire, the upper one with A crest or protuberance upon its 

 back and often deciduous in fruit; the lower one persistent. 



