BOTANY. 135 
equally spreading (not declined) lobes of the corolla, and the equal stamens with parallel anther- 
cells. If the published character of Zrichostema, and of the order were perfectly correct, it 
would also differ importantly in the amphitropous descending ovule. But in Trichostema, also, 
the ovules are amphitropous or between that and anatropous. The seed, however, is attached 
below the middle, whereas in Tetraclea it is attached above the middle; but this is merely a 
difference of degree. The anthers are not drawn quite right in the plate. They are scarcely 
emarginate at the upper, but deeply lobed at the lower end, and perfectly opposite or parallel’ 
TEUcRIUM CANADENSE, Linn. Benth. in DC. Prodr. 12, p. 581. Santa Cruz Valley Sonora; 
Schott, Thurber. West of Cerralbo; Gregg. (No. 1542, Wright.) 
TEUCRIUM CunENSE, Linn.; Benth. l. с. p. 518. T. laciniatum, Torr. in Ann. Lyc. N. York, 
2, p. 231; Benth.l.c. Common in plains and low places throughout western Texas, N. Mexico, 
Sonora, etc., June—September. (No. 1544, Wright.) 
BORAGINACEA. 
CORDIA PODOCEPHALA (n. sp.): ramalis teretibus subcapitatis ; foliis ovato-lanceolatis obtusius- 
culis basi angusto-cuneatis grosse serrato-dentatis utrinque ramulisque scabro-hirsutis ; pedun” 
culis axillaribus terminalibusque elongatis erectis; capitulis globosis; calyce ovato strigoso 
acute 5-dentato. Near San Antonio, Texas; October; also prairies and alluvions of the Rio 
Grande from the San Pedro to the Pecos; Schott. Plains and grassy places, Piedra Pinta, 
Texas ; September—October ; Bigelow. Near Monterey, Mexico; Gregg, Dr. Edwards. (Nos. 
456 ind 1510, Wright.) 
Plant 1-2 feet high, nearly simple or moderately branched. Leaves 1-1} e long, and 
3-5 lines wide; 4—6-toothed on each margin; scabrous on both sides, with short appressed 
hairs, which commonly arise from an elevated base.  Peduncles solitary in the axils, 2-6 
nches long. Heads (exclusive of the corolla) about one-third of an inch in diameter; the 
flowers closely aggregated. Corolla funnel-form, with a short tube, half an inch long and of 
equal diameter ; white or pale rose color; the lobes short and slightly emarginate. Fruc- 
‘tiferous calyx somewhat enlarged, the teeth triangular-ovate. Stamens included. Style long 
and filiform ; the apex twice 2-cleft. Ovary 4-celled, the ovules ascending. Drupe about the 
size of a hempseed (Canabis); pulp very thin ; endocarp reticulate-pitted. Cotyledons distinctly 
plicate longitudinally. Apparently allied to C. patens. An undescribed species of this genus 
was found by Gregg in the Balson de Mapimi. It may be thus characterized : 
CoRDIA GREGGI, (n. sp.): ramosissima, scabro-pubescens ; foliis obovatis obtusis dentatis 
plicato-rugosis, basi longe cuneatis; cymis contractis subcapitatis pee, laciniis calycis 
setaceis tubo campanulato brevioribus ; corolla glabra infundibulif lat In the 
northern part of the Balson de Mapimi, flowering in April. A shrub 5-8 feat high. Leaves 
scarcely half an inch long, of a pale greenish gray color. Peduncles terminating the leafy 
branches, an inch long. Cymes 8-12-flowered, the flowers at first in a dense head, but after- 
wards unfolding a little. The upper part of the 5—6-toothed calyx clothed with short blackish 
hairs. Corolla more than an inch in diameter, white; the lobes obtuse and entire. Stamens 
5-6, scarcely half the length of the corolla. Ovary tapering to a long slender style. Ovules 
ascending. This species connects the sections Dasycephale and Cordiopsis. It is allied to С. 
parvifolia, but has a much more contracted inflorescence. 
СовргА ВогвагЕвт (Alph. DC. Prodr. 9, p. 418,): foliis ovatis utrinque obtusis vel apice acuti- 
