GENUS 4. MINT FAMILY. 105 
1. Trichostema dich6tomum L. Blue Curls. Bastard Pennyroyal. Fig. 3573. 
Trichostema dichotomum L. Sp. Pl. 598. 1753. 2. gee 
NY \ \ => y 
Annual, minutely viscid-pubescent; stem slen- 
der, rather stiff, much branched, 6’-2° high, the 
branches spreading or ascending. Leaves oblong 
or oblong-lanceolate, membranous, obtuse or sub- 
acute at the apex, narrowed at the base into short 
petioles, 1’-3’ long, 3-10” wide, the upper grad- 
ually smaller; flowers paniculate, 6’-9” long, 
borne 1-3 together on 2-bracteolate peduncles; 
calyx oblique, very unequally 5-lobed, the 3 upper 
lobes much longer and more united than the 2 
lower ones; corolla blue, pink or rarely nearly 
white, the limb longer than the tube; stamens 
blue or violet. 
In dry fields, Maine to Florida, Vermont, Pennsyl- 
vania, Missouri and Texas. The lateral flowers be- 
come inverted by torsion of the pedicels. July—Oct. 
Ome: 
QD 
2. Trichostema lineare Nutt. Narrow-leaved 
Blue Curls. Fig. 3574. 
T. brachiatum Lam. Encycl. 8: 84. 1808. Not L. 1753. 
Trichostema lineare Nutt. Gen. 2: 39. 1818. 
Puberulent or glabrous, not viscid or scarcely so; 
stem very slender, at length widely branched, 6-18’ 
high, the branches ascending. Leaves linear, obtuse 
or subacute, sessile or very short-petioled, 4’-2’ long, 
1-2" wide, sometimes with smaller ones or short 
leafy branches in their axils; flowers very similar to 
those of the preceding species, sometimes larger. 
if In sandy fields and dry pine barrens, Connecticut to 
Georgia and Louisiana, mostly near the coast. July—Aug. 
5. SCUTELLARIA [Rivin.] L. Sp. Pl. 598. 1753. 
Annual or perennial bitter herbs, some species shrubby. Flowers blue to violet, in 
terminal or axillary bracted mostly secund spike-like racemes, or solitary or 2-3 together in 
the axils. Calyx campanulate, gibbous, 2-lipped, the lips entire, the upper one with a crest or 
protuberance upon its back and often deciduous in fruit, the lower one persistent. Corolla 
much exserted, recurved-ascending, dilated above into the throat, glabrous within, the limb 
2-lipped; upper lip arched, entire or emarginate; lower lip spreading or deflexed, its lateral 
lobes small and somewhat connected with the upper, its middle lobe broad, sometimes emar- 
ginate, the margins mostly recurved. Stamens 4, didynamous, all anther-bearing, ascending 
under the upper lip, the upper pair somewhat the shorter, their anthers 2-celled, ciliate; 
anthers of the lower pair of stamens I-celled, also ciliate. Style unequally 2-cleft at the 
apex; ovary deeply 4-parted. Nutlets subglobose or depressed, papillose or tuberculate, borne 
on a short or elongated gynobase. [Latin, a dish, from the appendage to the fruiting calyx.] 
About 100 species of wide geographic distribution. Besides the following, some 15 others 
occur in the southern and western parts of North America, all known as Skullcap, or Helmet- 
flower. Type species: Scutellaria peregrina L. 
* Nutlets wingless, very slightly elevated on the short gynobase. 
Ny 
Flowers 3”—-5” long, in axillary and sometimes terminal secund racemes. 1. S. lateriflora. 
Flowers 6”-15” long, in terminal often panicled racemes. 
Plant glabrous or very nearly so; leaves broad. 2. S. serrata. 
Plants pubescent, puberulent or pilose. 
Leaves all except the floral crenate or dentate, broad. 
Canescent, not glandular; corolla canescent. 3. S. incana. 
Densely glandular-pubescent ; corolla puberulent. 4. S. cordifolia. 
Pubescent below, glandular above; corolla nearly glabrous. 5. S. pilosa. 
Leaves all except the lowest entire, narrow. 6. S. integrifolia. 
Flowers solitary in the axils or sometimes also in terminal bracted racemes. 
Perennial from a thick woody root. 7. S. resinosa. 
Fibrous-rooted ; perennial by rootstocks or stolons. 
Flowers 2”-4” long. 8. S. parvula. 
Flowers 8”-13” long. 
