122 ; UNITED STATES AND MEXICAN BOUNDARY. 
exserted ; anthers 2-celled, bifid at the base, mucronulate at the summit ; filaments slender, 
very smooth, inserted into the middle of the tube of the corolla. Ovary oblong-conical, the 
base surrounded by a glandular ring. Style conspicuously exserted, filiform, smooth, except at 
‚ the base, which is a little pubescent, somewhat clavate at the summit ; stigma small, capitate. 
Capsule oblong, apiculate, 2-celled, septicidal ; valves 2-cleft at the summit; placentae thick, 
adnate to the axis. Seeds numerous, imbricated, the testa loose, cristate at both ends twice the 
length of the nucleus. Embryo straight. We have seen one or two pentamerous flowers. This 
genus is dedicated to Major William H. Emory, United States Commissioner to the Mexican 
Boundary Survey, who has taken the liveliest interest in the botany of the region explored 
under his command, and has afforded every facility to the gentlemen who had that department 
of science in charge. Mr. Miers, to whom we sent specimens of this plant, thought it might be 
referred to the tribe Buddleie. Indeed it is nearly related to Buddleia itself. 
АСАХТНАСЕЖ, 
ELYTRARIA TRIDENTATA, Vahl. var. CAULESCENS, Nees, in DC. Prodr. 11, р. 64. Guadaloupe 
cañon, etc. Sonora; Capt. E. K. Smith, Schott, Thurber. Lower California; Mr. Rich. (No. 
2. AP. Wright. No. 1207, Coulter ; Mexico.) 
-一 OALOPHANES OBLONGIFOLIUS, D. Don. in Sweet Fl. Gard. 2, t. 181: Nees, 1. c. p. 107. Valley 
edi of the Santa Cruz river, etc., Sonora; Capt. E. K. Smith, Thurber. Plains between Yan Horn's 
e Wells and Muerte, and down the valley of the Rio Grande to the Gulf of Mexico. (No. 1462, 
- Wright.) 
2 C. OBLONGIFOLIUS, var. Texensis, Nees, 1. c., p. 108. С. linearis, Engelm. & Gray, Pl. Lindh. 
% B. p. 50, (adnot.) Common along the middle Rio Grande on both sides of the river, and,in 
Sonora ; flowering from April to September. (Nos. 1463 and 1464, Wright.)‏ ج 
CRYPHIANTHUS BARBADENSIS, Nees, Del. Sem. Hort. Vratisl. 1841, & in DC. Prodr. 11, p. 197. 
Dipteracanthus nudiflorus, Engelm. & Gray, l. c., p. 21. Moist places in central and western 
Texas, particularly along the lower Rio Grande; Schott, Bigelow. (Nos. 1454 and 1455, Wright.) 
Ruellia alba, Nees is, perhaps, not distinct. 
DIPTERACANTHUS? SUFFRUTICOSUS (n. sp.): caule glabro inferne fruticoso erecto; foliis obovato- 
oblongis glabriusculis subcoriaceis basi in petiolem attenuatis, margine retrorsum ciliatis ; 
pedunculis axillaribus 1-Ногів ; bracteolis oblongo-lanceolatis ; calycis laciniis lanceolato-line- 
aribus tubo corollz elongato gracili subtriplo brevioribus. Presidio del Norte; July—August ; 
= Parry. Sides of rocky hills, valley of the Pecos. No. 1461, Wright. Plant apparently about 
a foot high. Leaves 1-1? inch long, acute or obtuse, smooth or slightly pubescent. Pedun- 
cles 2-4 lines long, the bracts a little longer than the calyx. Segments of the calyx 
sparsely ciliate. Corolla white; the tube 14 inch long, very slender, somewhat dilated at the 
summit; lobes of the limb roundish-obovate. Stigma simple, (the inferior lobe abortive.) 
Capsules 4-seeded ; seeds hispid. This is the only suffruticose species of this genus known 
% within the limits of our Flora. 
STENANDRIUM BARBATUM, Torr. & Gray, Bot. Pope's Hep. p. 13, t. 4. Mountains and hill sides 
___ along the Rio Grande from El Paso to the mouth of the Pecos; March—April. (No. 1453, 
Wright.) Stem branching from a thick wood base. Flowers pale purple. Ç ; 
ScHAUERIA PARVIFOLIA (п. sp.): suffruticosa е basi ramosorissima glanduloso-pubeseens ; foliis 
oblongis ovatisve acutis ; spicis terminalibus subpaniculatis interruptis ; floribus oppositis sessili- 
Бас Белл РЫ ч 
