Scutellaria: XCIII. LABIATiE. . ^3 



as the whole plant, clothed with a whitish wool. Leaves petiolaic, taper- 

 ing to an obtuse point, pale, with whitish down beneath. Flowers purplish, in 

 very hairy, mostly terminal whorls or heads. Peduncles cymoscly branched, 

 short. Involucreol' narrow and brislle-like bracts, about equaling the hairy, 

 subulate calyx teeth. July. 



Trlbe 6. SCUTEI.IiARINEiE.— Calyx bilabiate, upper lip truncate. Co- 

 rolla bilabiate, upper lip vaulted, tube ascending, exserted. Stajnens 4, 

 ascending beneath the upper lip of the corolla. 



21. SCUTELLARIA. 



Lnt. scutclln, a smjili vessel ; from the resemblance of the calyx with it.s a|)iMiicliit'crt. 



Calyx campauulate, bilabiate, lips entire, upper one ai)pendaged on 

 the back and closed after flowering ; cor. bilabiate, upper lip vaulted, 

 lower dilated, convex, tube much exserted, ascending ; sta. ascending 

 beneath the upper lip ; anth. approximate in pairs. 

 * Flowers axillary^ solitary. 



1. S. GALERicuLATA, CommoTi Scvll-cap. 



SL erect, simple, or branched ; lis. lanceolate-cordate, remotely crenate- 

 serrate ; Jls. axillary, solitarv. — 71- Meadows and ditches. Can. to Penn. Abun- 

 dant. The whole plant glabrous. Stem square, 12—18' high. Leaves trun- 

 cate-cordaic at base and acutish at apex, scarcely petiolate, U' by i'. 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. 



2. S. NERVOSA. Pursh. (S. gracilis. Nutt.) 



St. slender, erect, subsimple, stoloniferous ; lis. broad-ovate, subcordate, 

 crenate-serrate, sessile, glabrous, 3— 5-veined, lower roundish-ovate, upper ovate 

 and lance-ovate, slightly petioled ; /s. axillary, solitary.— Rocky shades, along 

 streams, Perm. ! to 111. ! and La. Roots creeping, often sending out long, fili- 

 form stolons. Stem 8—15' high, weak, often with a few filiibrm branches. 

 Leaves 2—15" by 5—12", the middle pairs largest, acute or obtusish. Floral 

 leaves entire, small. Flowers few, .sometimes on the slender branches only. 

 Corolla pale blue, 4—6" long. May— Jl. 



3. S. PARVULA. Michx. (S. ambigua. Nutt.) 



St. simple or branching at base, square, puberulent; lower lis. suborbicu- 

 lar, petiolate, upper oblong-ovate, obtuse, entire, sessile, axillary, opposite.— 

 Pastiu-es, Mid. ! and Western States ! Plant 3— G' high. Root generally (not 

 always 7) with tuberous internodes, and fibrous at each joint. Leaves 3— 6' 

 long, h as wide, lower 3" diam. Flowers i—&' long, rather numerous, longer 

 than the leaA^es, blue. June. 

 » * * Mowers m axillary and terminal racemes. 



4. S. LATERIFLORA. Mad-dog Scull-cap. 



St. branching, nearly glabrous; lis. ovate-lanceolate, acuminate, serrate, 

 petiolate ; rac. lateral, axi'llarv, lealv.— Meadows and ditches, lat. 3S° to Arc. 

 Am. Stem square, 1— 2f high, very branching. Leaves opposite, rounded at 

 base, acuminate or acute, coarsely .serrate, on petioles an inch in length. Ra- 

 cemes opposite, axillary, somewhat one-sided, on long stalks, and consisting of 

 numerous small, blue flowers intermixed with small leaves. The English 

 name is due to the singular Ibrm of the calyx, which after flowering, closes 

 upon the seeds like a cap or vizor. July, Aug. 



5. S. PiLosA. Michx. Darl. (S. ovalitblia. Bart.) 



St. erect, mostly simple, hirsute-pubescent; lis. pubescent, rhomboid- 

 ovate or oval, crenate-serrate, petiolate, in remote pairs; rac. terminal, rather 

 short ; bracts elliptic-ovate.— Open woodlands, Penn. to Car. Stem 1— Ul high, 

 purplish. Leaves few, 1— 2i by f— U', cuneately narrowed to the petiole, 

 ratherobtu.se. Raceme generally simple and few-flowered, with opposite, el- 

 liptical bracts. Pedicels and calyx hairy. Corolla tube neorlv w'nii.- below, 

 blue at summit, 6 — 9" long. June— Aug. 

 36* 



