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BOTANY. 139 
loculis in utroque segmento lateralibus lacuna magna centrale interposita, Plains near Presidio 
del Norte, August, fl. and fr.; Bigelow. ` Plant about a foot high, the stem a little woody at 
the base. Leaves alternate, ° inches long, and an inch or more wide, clothed (like the stem) 
with a soft velvety pubescence, the veins underneath very distinct. Spikes 14-2 inches long, 
and not much elongated in fruit, at first strongly circinate, the flowers closely approximated. 
Corolla about 24 lines long, white, infundibuliform. Anthers oblong. Stigma subsessile, 
conical from a ined base, pubescent. Fruit about 2 lines in diameter, segments 2-seeded, with 
a large central lacune interposed, besides 1-2 smaller lateral ones. 
HELIOPHYTUM (Сатома) GLABRIUSCULUM (n. sp.): caule herbaceo erecto e basi ramoso adpresse 
pubescente ; foliis alternis lanceolatis, obtusiusculis basi in petiolum attenuatis utrinque viridis 
glabriusculis ; spicis solitariis geminatis vel ternatis, junioribus scorpoideis ; floribus brevissime 
pedicellatis approximatis ebracteatis; calycis lobis lineari-lanceolatis ; corolla lobis oblongis 
obtusis ; fructu compresso subdidymo puberulo apice integro ad suturas late excavato, segmentis 
disp:rmis, lacuna centrali interposita praeterea lacunarum 2 minorum lateralium. Sandy plains, 
Eagle Pass, September ; Bigelow. (No. 1549, Wright.) Aboutaspan high ; the lower branches 
spreading and perhaps prostrate. Leaves an inch long and 2-3 lines wide, a little hairy on the 
midrib underneath, the rest nearly smooth ; the margin somewhat undulate. Peduncles terminal, 
bearing from one to three spikes, which are about an inch in length. Corolla white, the border 
dilated, deeply 5-lobed ; the lobes slightly undulate. Stamens inserted about the middle of the 
tube; anthers sessile, fixed near the middle of the back, lanceolate, acute. Stigma about as 
long as the subglobose ovary, nearly sessile, conical from a broad annular base. Fruit d:dy- 
mous, the apex truncate, concave and 4-6-denticulate; the segments sometimes only 1-seeded 
by abortion, with 3 empty cells, the central one (near the commissure) larger, the others lateral 
and much smaller. 
EUPLOCA CONVOLVULACEA, Nuit. in Trans. Amer. Phil. Soc. n. ser. 5, p. 189; Hook. Ic. t. 651; 
Torr. in Marcy's Rep. p. 294, t. 15. Valley of the Rio Grande, from Presidio del Norte up- 
wards, July—October. Chihuahua; Thurber. (Wright, No. 1553.) In the centre of each 
division of the fruit there is a small empty cell or lacuna, which is seen only when a cross section 
is made midway between the base and the apex. This genus is intermediate between Tourne- 
fortia $ Arguzia, and Heliophytum. 
Macromeria VIRIDIFLORA, DC. Prodr. 10, p. 68? Copper Mints, New Mexico, June—August; 
` Bigelow, Thurber. (No. 1558, Wright.) Plant two or three feet high; erect. Stem hispid with 
spreading hairs. ا‎ lanceolate, 2-3} inches long, and 6-12 lines wide, the 
upper surface hispid with hairs which arise from an elevated callous base ; the under side either 
hispid or somewhat softly villous with closely appressed hairs. Flowers nearly an inch and a 
half long, tubular-funnelform, greenish and very hairy externally ; yellow inside. Calyx 
about one-fourth the length of the corolla; the divisions much elongated in fruit, Stamens at 
first included, but at length exserted. Nutlets ovate, more than a line long, smooth, and shining. 
Our plant agrees sufficiently well also with the description of M. viridiflora. 
ONOSMODIUM CAROLINIANUM, DC. Prodr. 10, p. 10. San Antonio, Texas; Thurber. We have 
intermediate forms which seem to connect O. Virginiana and O. molle with this species. 
LITHOSPERMUM CANESCENS, Lehm. Asp. 2, p. 305, DC. Prodr. 10, p. 18. Copper Mines, New 
Mexico, and Mountain Arroyos, near Camp Bache, June—July—August; Bigelow, Thurber. 
