8 S. nervosa Ph. Slender, erect, subsimple, stoloniferous; lvs. broad-ovate, sub-cordate, crenate-serrate, sessile, glabrous, 3-5-veined, lower roundish-ovate, upper ovate and lance-ovate, slightly petioled; fls. axillary, solitary.-Rocky shades, along streams, Penn. to Ill. and La. Roots creeping, often sending out long, filiform stolons. Stem 8-15' high, weak. Leaves 2-15" by 5-12", the middle pairs largest, acute or obtusish. Eloral leaves entire, small. Flowers few, pale blue, 47 long. May-Jl.

9 S. parvula Mx. St. simple or branching at base, square, puberulent; lvs. oblong-ovate, obtuse, entire, sessile; fls. small (3') axillary, opposite.-Pastures, Mid. and W. States. Plant 3 to 6' high. Root generally with tuberous inlernodes, and fibrous at each joint. Lvs. 3 to 6" long, 1/2 as wide, lower 3" diam. Fls. rather numerous, longer (4") than the leaves, blue. Jn.

10 S. galericulata L. Common Scull-cap. St. erect, simple, or branched; lvs. lanceolate-cordate, remotely crenale-serrate; fls. axillary, solitary, large (1' long).-

Labiatae Labiate Plants Part 10 1270 Meadows and ditches, Can. to Penn. Abundant. The whole plant glabrous. Stem square, 12-18' high. Leaves truncate-cordate at base and acutish at apex, scarcely petiolate, 1 1/2' by 1/2'. Flowers much larger than the preceding, rarely more than 1 from the same axil, with a vizor-like calyx like that of the other species. Cor. an inch in length, blue. Aug.

11 S. lateriflora L. Mad-dog Skull-cap. St. branching, nearly glabrous; lvs. ovate-lanceolate, acuminate, serrate, petiolate ; rac. lateral, axillary, leafy.- Meadows and ditches, lat 38° to Arc. Am. St. square, 1 to 2f high, very branching. Lvs. opposite, rounded at base, acuminate or acute, coarsely serrate, on petioles an inch in length. Rac. opposite, axillary, somewhat 1 -sided; on long stalks, with small blue fls. and small lvs. Jl, Aug.-The English name is due to the singular form of the calyx, which after flowering, closes upon the seeds like a cap or vizor.

30. MACBRI'DEA, Ell. (Dedicated by Elliott to Dr. Wm. Macbride, of Charleston.) Calyx campanulate, 3-lobed, upper lobe oblong, narrow, lower, rounded; corolla tube long-exserted, throat inflated, upper lip erect, entire, lower short, spreading, the middle lobe rounded, broadest ; stamens ascending under the upper lip, anthers approximate by pairs.-Labiatae Labiate Plants Part 10 1271 Glabrous. Verticils 6-flowered, subterminal, bractlcss.

M. pulchra Ell.-Swamps, middle districts, N. Car. to Ga. St. obtusely 4-angled, 1 to 2f high. Lvs. oblong-elliptical, petiolate, obscurely serrate or sinuate, the floral short, sessile, ovate-entire. Verticils 1 or 2. Cal. green, thin, veiny, 6" long, cor. 18", streaked with bright purple and white. Aug., Sept.

31. SYNAN'DRA,Nutt. (Fig. 86, 325.) (Gr.Labiatae Labiate Plants Part 10 1272 together, Labiatae Labiate Plants Part 10 1273 ; m allusion to the coherence of the anthers.) Calyx 4-cleft, segments unequal, subulate, converging to one side; upper lip of corolla entire, vaulted, the lower obtusely and unequally 3-lobed; throat inflated; stamens ascending beneath the galea, upper pair of anthers cohering, having the contiguous cells empty.- Labiatae Labiate Plants Part 10 1274 Fls. solitary, axillary, somewhat spicate above.

S. grandifldra Nutt. St. subsimple, nearly smooth, subterete; lvs. cordate-ovate, acuminate, obtusely dentate, often dilated at base, petiolate, the floral sessile; fls. solitary, sessile; cal. segm. ovate, setaceously acuminate, two upper larger than the two lower; cor. tube somewhat funnel-form, mouth much inflated.-Woods, Cleveland, Ohio, to Tenn. St. 6 to 18' high. Lvs. 1 to 2' long, nearly as wide, petioles 1 to 3'. Cor. 1' long, upper lip very large, rounded, white, lower lip striated with purple lines. Jn.

32. PHYSOSTE'GIA, Benth. Lion's-heart. (Gr.Labiatae Labiate Plants Part 10 1275 , a bladder, and Labiatae Labiate Plants Part 10 1276 a covering; from the inflated corollas.) Calyx campanulate, subequally 5-toothed; corolla tube much exserted, throat inflated, upper lip concave, middle division of lower lip largest, roundish, emarginate; stamens 4, unconnected, ascending beneath the upper lip, the two lower rather longer.- Labiatae Labiate Plants Part 10 1277 Fls. opposite, in a terminal, bracteate, 4-sided spike. P. Virginiana Benth. Cal. in fruit ovate, inflated; cor. gaping, upper lip concave.-A beautiful plant, native in Penn., S. and W. States, often in gardens. It varies much in stature, is very smooth, dark-green. St. square, thick,, rigid, 1 to 4f high. Lvs. opposite, closely sessile, 3 to 6' by 3" to 3' (the lower often very large), with remote and shallow teeth. Fls. numerous, dense, or often sub-remote. Bracts subulate. Cor. pale purple, about an inch long, spotted inside. Aug., Sept. (D. Virginiana, denticulatum, variegatum and obovatum of authors.)

33. LA'MIUM, L. Henbit. (Lat. lamia, the name of a sea monster, to which the grotesque flowers may be likened.) Calyx 5-veined, with 5 subequal, subulate teeth; corolla dilated at throat, upper lip vaulted, galeate, nearly entire, lower lip broad, emarginate, lateral lobes truncate, often toothed on each side near the margin of the dilated throat; stamens 4, ascending.

1 L. amplexicaulis L. Lvs. roundish, incisely crenate, floral broadly cordate, obtuse, sessile, amplexicaul, lower one petiolate; anth. hairy.- Waste grounds,

Labiatae Labiate Plants Part 10 1278

Mid., S. and W. States. Sts. ascending, several from the same root, 6 to 10' high, with opposite, broad, short, hairy lvs., lower ones on stalks 1 to 2' in length. Fls. in dense verticils, in the axils of the upper leaves. Cor. purple, downy, the tube much exserted, the lower lip spotted with white. May-Nov. § Eur.