OF AETS AND SCIENCES. 423 



Gnaphalidm purpureum, Linn. Guadalajara, on shady banks ; 

 July. (219.) 



Gnaphalium SEMIA3IPLEXICAULE, DC. Guadalajara ; July. 

 (256.) 



Lagascea angustifolia, DC. Prodr. 5. 92. Rio Blanco, on tops 

 of hills ; October. (G43.) 



Lagascea suaveolens, HBK. (Z. latifoUa, L. helianthifulia 

 &c.) Rio Blanco, in ravines ; October. (G64.) 



, GuARDiOLA Mexicana, Humb. & Bonpl. PI. iEquin. 1. 144, t. 41. 

 {G. alriplicifolia, Gray, PL Wri<^ht. 1. 111.) Guadalajara, on hill- 

 sides; July. (214.) — The figure is exaggerated in size. 



GuAKDioLA TuLOCARPus, Gray, 1. c, var. angustifolia. Te- 

 quila, on sides of ravines. (3G0.) — With much smaller heads than 

 the last species. 



Melampodiuji hispiddm, HBK. Nov. Gen. & Spec. 4. 273, t. 

 399. Guadalajara, on hills among shrubbery; July. (2G0.) 



Melampodium sericeum, Lag. Nov. Gen. & Spec. 32, var. lon- 

 GIPES. Tequila, base of mountains. (391.) — This is the normal 

 form, with peduncles an inch or two long. The specimens of Menzies 

 (var. brevipes), from near Guanajuato, seem to be a depaujoerate state. 

 M. Icmceolatum, DC, which appears to be a plant of the western coast 

 of Mexico (Manzanilla, Xantus, an annual), is probably a form of 

 3£ Americanum, Linn. 



Melampodium ovatifolium, Reich. (M. divaricatum, DC.) 

 Chapala. (759.) 



Tragoceras zinnioides, HBK. Nov. Gen. & Spec. 4. 249, t. 385. 

 {T. Schiedeanus, Less, in Linna^a, 9. 269; a mere form.) Guadala- 

 jara, on grassy hilltops ; July. (262.) — The bifurcation of the ligule 

 is variable, and appears to increase with age. 



Zinnia angustifolia, HBK. {Z. linearis, Benth. PI. Hartw. 

 17.) Rio Blanco, in rocky ravines; June. (54.) — Leaves very 

 narrowly linear. The broader-leaved Z. angustifolia of authors is, 

 I think, the Z. mvltijlora of Kunth, but not of Linnasus. 



Zinnia maritima, HBK. Nov. Gen. & Spec. 4. 251. Tequila, on 

 rocky hillsides. (355.) — The form with oblong or some lanceolate 

 leaves, which Coulter collected at Mazatlan, and of which Schaffner 

 distributed specimens collected by Barcena. Bates, Gregg, and See- 

 mann collected the narrower-leaved form, Hemsley's Z. bicolor, the 

 3fendezia bicolor, DC. The ligules are bright white, the disk yellow. 



Zinnia Palmeri, Gray, n. sp. Ramosissima, bipedalis ; ramis 

 gracilibus tenui-pubescentibus ; foliis membranaceis ovato-lanceolatis 



