OP AETS AND SCIENCES. 449 



sile, filiform, 4 inches long or less. Rio Blanco, in the deep recesses 

 of overhangiog rocks ; September. (585.) 



LoRANTHUS Palmeri, Watson. Rio Blanco, growing on Bursera 

 Palmeri ; September. (610.) 



LoRANTiius CALYCULATUS, DC, var. with narrow acutish leaves 

 (3 or 4 inches long by 5 to 12 lines broad) and smaller flowers (15 

 lines long). Guadalajara; August. (277.) — Frequent on various 

 kinds of trees, peach, orange, olive, oleander, mesquite, and willow. 



Phoradendron rubrum, Griseb. ? Leaves linear, attenuate to 

 the base, 2 or 3 inches long by 2 to 4 lines broad, straight or some- 

 what falcate : spikes an inch long or less, 2-3-jointed ; berries red, 

 in 1 to 3 (usually 2) contiguous whorls. Chapala, growing in thick 

 bunches. (719.) 



Euphorbia umbellulata, Engelm. Rio Blanco, on hills ; July. 

 (751.) 



Euphorbia radioloides, Boiss. ? Larger (3 to 8 inches high) 

 than Seemann's originally described specimens, reddish througliout, 

 villous with spreading hairs : appendages entire : seeds deep salmon- 

 color. Rio Blanco, on the grassy shaded sides of ravines ; October. 

 (687.) 



Euphorbia adenoptera, Bertol. Rio Blanco ; September. (567.) 



Euphorbia (Zygophyllidium) retroscabra. Retrorsely sca- 

 brous-hispid, the slender stem (2 feet high) from a tuberous root (an 

 inch in diameter or more), with opposite or verticillate branches : 

 leaves opposite or the upper cauline verticillate, linear (1 to 3 inches 

 long), scabrous, shortly petiolate ; stipules obsolete : involucres in dif- 

 fuse terminal cymes, turbinate, Ih lines long, glabrous or very mi- 

 nutely puberulent; lobes short; appendages of the glands entire, 

 suborbicular, white or yellowish: capsule smooth: seeds ecaruncu- 

 late, ovate, irregularly tuberculate between shallow depressions. Rio 

 Blanco, on grassy hillsides ; July. (157.) 



Euphorbia (Cyttarospermum) Guadalajarana. Stem erect, 

 very slender (18 inches high), angled, glabrous, nearly simple: leaves 

 alternate (the lowest opposite), linear (1 to 1^ inches long), deflexed, 

 sparsely villous and ciliate, the petiole (3 or 4 lines long) inserted a 

 little above the rounded base of the blade : peduncles axillary, slender, 

 about equalling the leaves, dichotomous and more or less hispid, the 

 linear-acuminate bracts long-villous : involucres turbinate, purplish, 

 slightly villous ; lobes lacerate ; glands narrowly oblong, appendaged 

 with 5 to 7 long purple seta3 : ovary glabrous ; styles simple, spread- 

 ing. Rio Blanco, in shaded ravines ; September. (548.) 



VOL. XXII. (n. S. XIV.) 29 



