378 LABIATE. Dracocephalum. 



3 together in the axils of the leaves, short-peclicelled : bracts setaceous : calyx-teeth seta- 

 ceous-acuminate from a broad base, soon spreading : corolla light blue, inch or less long : 

 pairs of stamens very unequal : anthers in perfect flowers closely approximate in pairs ; 

 the anther-cells diverging at a right angle, and each pair forming a cross : but the plant is 

 gynodioecious, i. e. some produce only female flowers with abortive stamens. Lab. 485. 

 Glechoma hederacea, L. Damp or shady places east of the Mississippi, in woods as well as 

 near dwellings. Popularly named Gill-over-the-Ground. (Nat. from Eu.) 



35. DRACOCEPHALUM, Tourn. DRAGON-HEAD (as the name, com- 

 posed of Souy.ojv and xeqrwL/, denotes). Herbs, chiefly of North Asia, one 

 North American, peculiar for its small and included corolla. 



D. parviflorum, Nutt. Annual or biennial, to 20 inches high, rather stout, some- 

 what pubescent : leaves lanceolate or oblong, petioled, incisely dentate, or the lower pin- 

 natifid-incised ; the lower floral similar : flowers numerous in sessile glomerules crowded in 

 a thick terminal leafy-bracted head or short spike interrupted at base : bracts pectinate- 

 laciniate and the teeth aristat.e : upper tooth of the calyx ovate, the others lanceolate and 

 subulate-acuminate: corolla bluish, slender, hardly exceeding the calyx. Gen. ii. 35; 

 Benth. in DC. xii. 400. Rocky or gravelly soil, N. New York (shore of Lake Ontario) and 

 L. Superior, to Brit. Columbia, and along the mountains to Utah and New Mexico : fl. spring. 



36. SCUTELL.ABIA, L. SKULLCAP. (Scutetla, a dish or platter, from 

 the form of the fruiting calyx.) Large and widely diffused genus, of bitter 

 (not aromatic) chiefly perennial herbs, rarely undershrubby ; with single (mostly 

 blue or bluish) flowers in the axils of leaves, or when the floral leaves are reduced 

 to bracts then in (commonly secund) spikes or racemes : fl. spring and summer. 

 Corolla arrect. All but two of our species are perennial, and the flowers in all 

 are opposite, one in each axil. 



1. Nutlets wingless, mostly marginless, on a low or slightly elevated gynobase. 

 # Flowers small (only a quarter inch long), in axillary and sometimes also terminal racemes. 

 8. lateriflora, L. (MAD-DOG SKULLCAP.) Glabrous, a foot or two high, leafy : leaves 

 thin, oblong-ovate and ovate-lanceolate, acuminate, coarsely serrate, rounded at base, 

 slender petioled ; the lower floral ones of the terminal racemes similar : lips of the corolla 

 short, equal in length. Spec. ii. 598; Lam. Diet. t. 515; Raf. Med. Fl. t. 84; Bart. Fl. 

 Am. Sept. i. t. 21. Wet borders of streams, Canada to Florida, New Mexico, and north- 

 wardly to Oregon and Brit. Columbia. 



* * Flowers larger (half to full inch long), in terminal single or panicled racemes, which are 

 commonly more or less leafy below, the floral leaves being gradually reduced to bracts. 



+ Cauline leaves all cordate, crenate-toothed, and slender-petioled : lateral lobes of the corolla 

 almost equalling the short upper lip: anthers minutely ciliate. 



S. versicolor, Nutt. Soft-pubescent : stem rather stout, erect, 1 to 3 feet high : leaves 

 rugosely very veiny, broadly cordate, mostly obtuse (3 or 4 inches long) ; the floral ovate, 

 entire (half inch long), crowded : racemes glandular-pubescent: corolla bright blue with 

 lower side and lip whitish. Gen. ii. 38. S. Carolintana, Walt. Car. 163 1 S. cordlfolia, 

 Mnlil. Cat. Banks of streams, Penn. and Wisconsin to Florida and Texas. 



Var. bracteata, Benth. Robust, with larger and firmer floral leaves, many of the 

 lower occasionally longer than the flowers, which thus appear to be axillary rather than 

 racemose. Lab. 433. Texas. 



Var. minor, Chapm. Low, slender, and thin-leaved: floral leaves small. Fl. 323. 

 S. mgusa, Wood, Class-Book. Mountains of Virginia, &c. 



S. saxatilis, Riddell. Slightly and sparsely pubescent, or glabrous : stems slender, weak, 

 ascending (a span or two high), stoloniferoua from the base : leaves thin, moderately 

 veiny, cordate-ovate, obtuse, crenate-dentate (inch or two long) ; floral ovate or oblong, 

 entire: raceme simple, loose: corolla light blue. Cat. PI. Ohio, Suppl. (1836) 14; Benth. 

 in DC. Prodr. xii. 422 ; Gray, Man. ed. 1, 327. Shaded moist banks, Delaware to Ohio 

 and Tennessee. 



