Bdtany and jioology. 



the second division, aiid thougl 

 and E. Ipecacuanha, had to be 



The Appendiculatm are divided into 11 sections, the first and larg-est of 

 which is Anisophyllurti with 176 species, the best known representatives of 

 which with us are E.maculata and E. hi/peridfolia,here c lied E. Preslii. We 



«st of it; 3 comoiOTi in the West Indies, extending into Florida (of these 

 E.h</percifo[{a. L., proper, is not mentioned as a Florida i)lant by Mr. Boissier) 

 24 are peculiar to the western plains, Texas, New Mexico and Arizona, nnd 2 

 are exclusively Californian. Several of the 24 southwestern species extend 

 farther south into Mexico, and 3 of them, E. prostrata and E. serpens, which 

 latter extends up the Mississippi and its c6nfluents, are wide spread species 

 found through the warmer parts of the whole globe. 



only been able to see so many varities of one polymorphous species. Thus the old 

 ^■hypericifolia comprises his small -tlowered and fruited tropical jE. hypericifolia 

 proper, our larger-flowered, larger and darker-seeded E. Prestii, and several 

 topical and eastern forms, as the hairy-fruited E. lasiocarpa, the large seeded 

 ■£ Brasiliensis, and others. E. zygophxjUoides was very properly separated from 

 -E. petdloidea, but E. pohjclada I suspect is only a form of the latter. E. micro- 

 mera, which I had taken for a form of E. polycarpa, seems well distinguished, 

 imay add here that the western E. serpylliJoHn, formerly united bv me to several 

 forms of the old world under the name of E. infequilatera and E. ffh/piosperma, 

 have lately been found by Mr. T. J. Hale in Wisconsin, as also E. 'Gei/eri first 

 Qiscovered in Illinois, which last seems to preserve its distinction from E. 



The 25 species of the 3d section, CyUarospermum, are all inhabitants of the 

 farmer parts of America, 13 being Mexican, and only one of our species, E. 

 mrcaia, perhaps an intermediatelink between this and the former section, 

 « doubtfully referred here. 



. Sections 4 and 5 contain few, only American species, none of tham belong- 

 «»|to our flora. ^^^.^^ ^ ^ ,^^^ ^^^ 



^- bicolor, belonff to the west and southwest, and the third is a closely allied 

 Mexican form. ^ 



Sections 7 and 8 are small and almost entirely South American. 

 ^ 1 he 9th section, Tithumalapsis, on the contrary, is entirely North American, 

 ' species beionirina to our flora and one to Mexico. E. coroUnta, including E. 

 &nicu!cUa, is the wide-spread and well-known representative of this sectiori. 

 The heretofore imperfectly known Michauxian species, E. pubeniissima and 

 5- mercurialinrt have been restored by Mr. Boissier, after a careful exarnina- 

 t'on of the original specimens in Richard's herbarium, now ,n the hands of 

 Mr. Franqueville of Orleans. The former, Irowever, may be a variety of E.cor- 

 °^''^'^. Mr. Boissier has from the sames-.urce ascertained th^t Epoh/gowfolm 

 -^i>chx., IS a form of E. Curtisii,thoagb his other specimens, m the herbarium, 

 'J' the Jardin des Planter in Pans, is a form of E. Ipecacuanha. 

 . ^ Trkhosteri^ma, the S sectio^, comprises 5 species, all of them Western 

 Mexican, two of which reach into our boundaries. The 2 speciea of the 

 nUi section belong to South America. ■■ a- ifi t" ns 2 f 



*t»ich only are" represented in the North American Flora. 



^tion 15, PoinseUia, with 1 1 species, is almost entire 



