Scutellaria. XClil. LABIAT^E. 42^ 



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

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

 ver\' hairy, mostly terminal whorLs or heads. Peduncles cymosely branched, 

 short. Involucre of narrow and bristle-like bracts, about equaliug'the hairy, 

 subulate calyx tcelh. Jul}^ 



Truje 6. SCUTEIiLiARINE^.— Calyx bilabiate, upper lip truncate. Co- 

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

 ascending beneath the upper lip of the corolla. 



21. SCUTELLARIA. 



Lat. scutella, a small vessel ; fiom the resemblaiice of the calyx with its appendages. 



Caljx campauulato, bilabiate, lips entire, upper one appendaged on 

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

 lower dilated, convex, tube much ez.serted, ascending ; sta. ascending 

 beneath the upper lip; auth. approximate in pairs. 

 * FMoers axillary, solUary. 



\. S. GALERicuLATA. Comvion Scull-cajj. 



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

 serrate ; Jls. axillary, solitary. — % Meadows and ditches, Can. to Penn. Abun- 

 dant. The whole plant glabrous. Stem square, 1-2 — 18' high. Leaves trun- 

 cate-cordate at base and acutish at apex, scarcely petiolate, IJ' 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. NKRvosA. Pursh.' (S. gracilis. Nuil.) 



■ SI. sjender, erect, subsiniple, stoloniierous ; lis. broad-ovate, subcordate, 

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

 and lance-ovate, slightly petioled ; Jls. axillary, solitary. — Rocky shades, aiong 

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

 form stolons. Stem 8 — 15' high, v/eak, oi'ten with a few filiform 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— G" long. May— Jl. 



3. S. PARviJLA. Michx. (S. ambigua. NuU.) 



SI. simple or branching at base, square, puberulent ; loirer lis. suborbicii- 

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

 Pastures, Mid. ! and Western States ! Plant 3 — ti' high. Root generally (not 

 alwa)'s 1) wilh tuberous internodes, and fibrous at each joint. Leaves 3 — 6" 

 long, J as wide, lower 3" diam. Flowers 4 — G" long, rather numerous, longer 

 than the leaves, blue. • Jmie. 



* * Mou-ers in axillary and terminal racemes. 



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



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

 petiolate ; rac. lateral, axilhiry, leafy. — Meadows and ditches, lat. 38° to Arc. 

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

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

 cemes opposite, axillary, somev/hat one-sided, on long stalks, and consisting of 

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

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

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



5. S. piLosA. Michx. Dark (S. ovalifoUa. Barl.^ 



St. erect, mostly simple, hirsute-pttbescent ; Ivs. pubescent, rhomboia 

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

 short ; bi-acts ellipticKJvate. — Open woodlands, Penn. to Car. Stem 1 — l^f high, 

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

 rather obtuse. Raceme generally simple and few-flowered, wirli opposite, el- 

 liptical bracts. Pedicels and calyx hairy. Corolla tube nearly white below, 

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

 36* 



