BOTANV 



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loculis in iitroque segmento lateralibus lacuna magna centrale interposita. Plains near Presidio 

 del Norte, August, fl. and fr.; Bigeloiv. Plant alooub a foot high, the stern a little woody at 

 the l)ase. Leaves alternate, 2 inches long, and an inch or more wide, clothed (like the stem) 

 ■with a soft velvety pubescence, the veins underneath very distinct. Spikes l|-2 inches long, 

 and not much elongated in fruit, at first strongly circlnate, the flowers closely approximated. 

 Corolla about 2| lines long, white, infuodibuliform. Anthers oblong. Stigma subsessile, 

 conical from a broad base, pubescent. Fruit about 2 lines in diameter, segments 2-seeded, with 

 a large central lacune interposed, besides 1-2 smaller lateral ones. 



Heliophytu3I (Cceloma) glabriusculum (n. sp.) : caule herbaceo erecto e basi ramoso adprevsso 

 pubescente; foliis alternis lanceolatis, obtusiusculis basi in petiolum attenuatis utrinque viridis 

 glabriusculis ; spicis solitariis geminatis vel ternatis, junioribus scorpoideis ; floribiis brevissime 

 pedicellatis approxiniatis ebracteatis ; calycis lobis lineari-lanceolatis ; corolhe lobis oblongis 

 obtusis ; fructu compresso subdidymo puberulo apice integro ad suturaslate excavato, segmentis 

 dispvrmis, lacuna centrali interposita prceterea lacunarum 2 minorum hitcralium. Sandy plains, 

 Eagle Pass, September; Bigeloio, (No. 1549, WrigJiL) About a span high ; the lower branches 

 spreading and perhaps prostrate. Leaves an inch long and 2-3 lines wide, a little hairy on the 

 midrib und'erneath, 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 fjessile, conical from a broad anr.ular base. Fruit d;dy- 

 mous, the apex truncate, concave and 4-6-denticulate ; the segments sometimes only l-secded 

 by abortion, with 3 empty cells, the central one (near the commissure) larger, the others lateral 

 and much smaller. 



EupLOCA co^s'VOLVULACEA, Ntitt. in Trcins. Arner. Phil, Soc. n. ser. 5,^, 189; EooJc, Ic. t, 651 ; 

 Torr. in Marcy's Bep. p. 294, f. 15. Valley of the Rio Grande, from Presidio del Norte up- 

 wards, July — October, Chihuahua; 2hicrher. (IVrigJit, 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. 



Macromeeia yiridiflora, do. Prodr. 10, p. 68? Copper Mines, New Mexico, June — August; 

 BigeloiOy Thxtrber. (No, 1558, Wright,) Plant two or three fe?t high; erect. Stem hispid with 

 spreading hairs. Leaves ovate, 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 aj^pressed hairs. Flowers nearly an inch and a 

 half long, tubular-funnelforra, greenish and very hairy externally ; yellow inside. Caljx 

 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 suflSciently well also with the description of M, viridiflora. 



Onosmodium Carolinianum, DC. Prodr. 10,^, TO. San Antonio, Texas; Thurher. \Ye have 

 intermediate forms which seem to connect 0. Virginiana and 0. molle with this species. 



LiTHOsPERMUM CAXESCEXS, Lehu, Asp. 2, p. 305 ; DC. Prodr. 10 ^ p. 78. Copper Mines, New 

 Mexico, and Mountain Arroyos, near Camp Bache, June — July — August ; Bigelow^ Ihnrber. 



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