LABIAT/E. CVI. Ameruystea. 
China, Sir G. Staunton. Sims, bot. mag. t. 2448.—Hall. in 
comm. goett. 1751. t. 10. act. ups. 1742. p. 51. f. 1. Herb 
erect, branched, glabrous, often bluish. Leaves petiolate, 3-5- 
parted ; segments oblong-lanceolate, deeply toothed ; floral 
leaves smaller: upper ones minute. Cymes peduncled, loose, 
racemosely panicled. Bracteas minute. Calyxes erect, bluish, 
quite glabrous, with lanceolate acute teeth. Corolla blue, 
scarcely exceeding the calyx. 
Blue-flowered Amethystea. 
1 to 14 foot. 
Cult. This being a hardy annual, the seeds of it should be 
sown in the open ground, where the plants are intended to re- 
main. 
Fl. June, July. Clt. 1759. Pl. 
CVII. TRICHOSTEMA (from pë rpryoc, thrix trichos, 
a hair ; and ornpwy, stemon, a stamen ; in reference to the capil- 
lary filaments.) Lin. gen. no. 733. Schreb. gen. no. 988. 
Juss. gen. no. 116. Benth. lab. p. 658. 
Lin. syst. Didynamia, Gymnospérmia. Calyx sometimes 
campanulate, nearly equal, deeply 5-cleft, sometimes depressedly 
campanulate, very oblique, with the 3 upper teeth (from the 
twisting of the pedicel inferior) elongated and connate ; and the 
2 lower ones (superior) very short. Corolla with a slender, 
usually exserted tube, which is exannulate inside, and a some- 
what equally 5-cleft limb; segments oblong, declinate : lower 
ones scarcely larger. Stamens 4, didynamous : lower ones the 
longest, and much exserted ; filaments sometimes monadel- 
phous; anthers about 2-celled: cells divaricate or diverging. 
Style bifid at apex; lobes subulate; stigmas minute.—Herbs, 
with quite entire leaves, and axillary or racemose inflorescence. 
Very nearly allied in character to Teucrium, but differs in 
habit. Zsánthus ought probably to be placed near this genus. 
Secr. I. Srrerrordpium (from orpemroc, streptos, twisted ; 
and rovc «woOoc, pous podos, a foot; in allusion to the pedicels 
being twisted.) Benth. lab. p. 658. Calyx very oblique, re- 
versed from the twisted pedicel. Pedicels solitary, opposite, 
1-flowered. 
1 T. xixzA'n£ (Nutt. gen. amer. 2. p. 39.) glabrous; leaves 
linear; flowers reversed. ©. H. Native of North America, 
from Philadelphia and New Jersey to Louisiana. T. dichóto- 
mum, Roth, nov. pl. spec. p. 280. T. brachiàtum, Lam. ill. 3. 
t. 515. but not of Lin.—Dill. elth. t. 285. f. 369.2 Hardly 
differing from 7. dichótomum, unless in being constantly gla- 
ep taller in stature, larger corollas, &c. Flowers purple or 
ue. 
Linear-leaved Trichostema. 
Pl. 1 foot. 
2 T. vicno’romum (Lin. spec. p. 834.) glabrous or pubes- 
cent ; leaves petiolate, oblong; flowers reversed. ©. H. 
Native of North America, from Canada to Carolina. T. piló- 
sum, Roth, nov. pl. spec. p. 280. Herb paniculately branched 
at top. Lower leaves about an inch long: upper floral ones 
bractea-formed, shorter than the pedicels. Flowers secund. 
Corollas small, blue or purple. 
Dichotomous-branched Trichostema. 
1759. Pl. i to 1 foot. 
Fl. June, Aug. Clt. 1759. 
Fl. June, Aug. Clt. 
SECT, II. Onrnoro DIUM (from opðoc, orthos, straight; and 
rovc 7000c, pous podos, a foot; in reference to the straight pedi- 
cels.) Benth. lab. p. 659. Calyx straight, equal. Cymes 
many-flowered. 
3 F. oszóNcuw (Benth. lab. p. 659.) pubescent or villous ; 
CVII. Tricuostema. 
CVIII. Tzucrrum. 861 
leaves oblong, narrowed at the base; cymes axillary; calyx 
about 5-cleft; tube of corolla inclosed. (2. H. Native of 
North-west America, in grassy places about Fort Vancouver, 
Douglas. Leaves green, distant, about an inch long, obtuse. 
Whorls remote. Corolla small, blue or purple. ? Genitals ex- 
serted, free. 
Oblong-leaved Trichostema. PI. 3 to 1 foot. 
4 T. rANcEoLA' TUM (Benth. lab. p. 659.) villous; leaves lan- 
ceolate ; cymes axillary ; calyx equally 5-cleft; tube of corolla 
exserted. ©.?H. Native of North-west America, near Fort 
Vancouver, in dry places at the river Multnomah; and of New 
California. Herb branched, hard at the base, and probably pe- 
rennial. Leaves sessile, an inch long, stem-clasping at the base. 
Whorls secund, distant. Corollas pubescent. Genitals exserted. 
Filaments connate at the base. 
Lanceolate-leaved Trichostema. | Pl. 4 to $ foot. 
5 T. vana‘rum (Benth. lab. p. 659.) leaves linear, with revo- 
lute edges; flowers racemose, woolly ; calyx about equally 5- 
cleft; tube of corola much exserted. (2.? H. Native of 
California, Douglas. Perennial or shrubby.? Branches clothed 
with hoary tomentum. Leaves numerous, fasciculated, form of 
those of rosemary, 1-2 inches long, glabrous above, and tomen- 
tose beneath. Upper floral leaves bractea-formed. Whorls 
sub-secund, rather loose, 10-20-flowered. Corolla woolly. 
Genitals exserted. Filaments free. 
Woolly Trichostema. Pl. 13 foot. 
Cult. The seeds of these annual plants should be sown in 
autumn, in pots filled with light earth ; and in winter the pots 
should be placed under a frame, to shelter them from frosts, 
but expose them at all times to the open air when the weather 
is mild. In the spring transplant them on to a bed of light 
earth, shading them from the sun until they have taken root. 
CVIII, TEU'CRIUM (so named from Teucer, son of Sca- 
mander, and father-in-law of Dardanus, king of Troy.) Lin. 
gen. no. 706. Schreb. gen. no. 960. Juss. gen. p. 112. 
Benth. lab. p. 660.—Chamee‘drys, Scorodónia, Scórdium, and 
Pólium, Tourn. inst. t. 93. 97. and 98. and Moench. Leucos- 
céptrum, Smith. 
Lin. syst. Didyndmia, Gymnospérmia. Calyx tubular or 
campanulate, rarely inflated, 5-toothed; teeth equal, or the 
superior one is broadest. Corolla with a short tube, which is 
exannulate inside; the 4 upper segments of the limb nearly 
equal, or the uppermost one is broader or longer, sometimes ob- 
long and declinate, and sometimes very short, and erectish ; 
lower segment very large, roundish or oblong, usually concave. 
Stamens 4, exserted between the upper segments, didynamous : 
the lower ones the longest; cells of anthers confluent. Style 
about equally bifid at apex; stigmas minute. Achenia more or 
less wrinkled.—Herbs and shrubs, variable in habit and inflo- 
rescence, 
Sect. I. Levcosce’ptrum (from Aevkoc, leucos, white; and 
exmrrpov, sceptron, a sceptre; in allusion to the long verticillate 
spikes of white flowers.) Benth. lab. p. 663.— Leucoscéptrum, 
Smith, exot. bot. p. 113. Whorls many-flowered, densely spi- 
cate. Calyx turbinate, incurved, with nearly equal teeth. Co- 
rolla incurved, reflexed ; the upper segments very short, broad, 
truncate, erect.— An Indian shrub, clothed with hoary to- 
mentum. 
1 T. macrosra‘cuyum (Wall. mss. ex Benth. lab. p. 663.) 
shrubby ; branches hoary; leaves oblong, clothed with dense 
white tomentum beneath ; whorls many-flowered, densely spi- 
cate; calyx almost equally toothed ; upper segments of corolla 
